/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-bc289cb [2022-01-28 14:35:23,579 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-28 14:35:23,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-28 14:35:23,659 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-28 14:35:23,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-28 14:35:23,661 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-28 14:35:23,663 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-28 14:35:23,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-28 14:35:23,668 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-28 14:35:23,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-28 14:35:23,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-28 14:35:23,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-28 14:35:23,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-28 14:35:23,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-28 14:35:23,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-28 14:35:23,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-28 14:35:23,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-28 14:35:23,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-28 14:35:23,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-28 14:35:23,675 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-28 14:35:23,675 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-28 14:35:23,682 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-28 14:35:23,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-28 14:35:23,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-28 14:35:23,691 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-28 14:35:23,691 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-28 14:35:23,691 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-28 14:35:23,692 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-28 14:35:23,692 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-28 14:35:23,692 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-28 14:35:23,693 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-28 14:35:23,693 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-28 14:35:23,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-28 14:35:23,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-28 14:35:23,694 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-28 14:35:23,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-28 14:35:23,695 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-28 14:35:23,695 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-28 14:35:23,695 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-28 14:35:23,696 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-28 14:35:23,696 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-28 14:35:23,702 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-01-28 14:35:23,725 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-28 14:35:23,726 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-28 14:35:23,726 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-28 14:35:23,726 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-28 14:35:23,726 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-28 14:35:23,726 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-28 14:35:23,727 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-28 14:35:23,727 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-28 14:35:23,727 INFO L138 SettingsManager]: * Use SBE=true [2022-01-28 14:35:23,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-28 14:35:23,727 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-28 14:35:23,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-28 14:35:23,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-28 14:35:23,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-28 14:35:23,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-28 14:35:23,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-28 14:35:23,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-28 14:35:23,728 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-28 14:35:23,728 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-28 14:35:23,728 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-28 14:35:23,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-28 14:35:23,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-28 14:35:23,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-28 14:35:23,728 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-28 14:35:23,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-28 14:35:23,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-28 14:35:23,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-28 14:35:23,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-28 14:35:23,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-28 14:35:23,729 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-28 14:35:23,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-28 14:35:23,729 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-28 14:35:23,729 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-28 14:35:23,729 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-28 14:35:23,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-28 14:35:23,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-28 14:35:23,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-28 14:35:23,957 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-01-28 14:35:23,957 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-01-28 14:35:23,958 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl [2022-01-28 14:35:23,958 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_6.bpl' [2022-01-28 14:35:23,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-28 14:35:23,983 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-28 14:35:23,984 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-28 14:35:23,984 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-28 14:35:23,984 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-28 14:35:23,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 02:35:23" (1/1) ... [2022-01-28 14:35:23,996 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 02:35:23" (1/1) ... [2022-01-28 14:35:24,002 INFO L137 Inliner]: procedures = 7, calls = 6, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-01-28 14:35:24,003 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-28 14:35:24,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-28 14:35:24,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-28 14:35:24,004 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-28 14:35:24,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 02:35:23" (1/1) ... [2022-01-28 14:35:24,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 02:35:23" (1/1) ... [2022-01-28 14:35:24,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 02:35:23" (1/1) ... [2022-01-28 14:35:24,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 02:35:23" (1/1) ... [2022-01-28 14:35:24,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 02:35:23" (1/1) ... [2022-01-28 14:35:24,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 02:35:23" (1/1) ... [2022-01-28 14:35:24,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 02:35:23" (1/1) ... [2022-01-28 14:35:24,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-28 14:35:24,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-28 14:35:24,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-28 14:35:24,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-28 14:35:24,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 02:35:23" (1/1) ... [2022-01-28 14:35:24,018 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-28 14:35:24,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-28 14:35:24,032 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-28 14:35:24,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-28 14:35:24,078 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2022-01-28 14:35:24,078 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2022-01-28 14:35:24,078 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2022-01-28 14:35:24,078 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2022-01-28 14:35:24,078 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2022-01-28 14:35:24,078 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2022-01-28 14:35:24,079 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2022-01-28 14:35:24,079 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2022-01-28 14:35:24,082 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2022-01-28 14:35:24,082 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2022-01-28 14:35:24,082 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2022-01-28 14:35:24,082 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2022-01-28 14:35:24,082 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2022-01-28 14:35:24,082 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2022-01-28 14:35:24,082 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2022-01-28 14:35:24,092 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-01-28 14:35:24,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-28 14:35:24,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-28 14:35:24,093 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2022-01-28 14:35:24,093 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2022-01-28 14:35:24,093 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2022-01-28 14:35:24,094 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-28 14:35:24,144 INFO L234 CfgBuilder]: Building ICFG [2022-01-28 14:35:24,145 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-28 14:35:24,241 INFO L275 CfgBuilder]: Performing block encoding [2022-01-28 14:35:24,247 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-28 14:35:24,248 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-28 14:35:24,249 INFO L202 PluginConnector]: Adding new model example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 02:35:24 BoogieIcfgContainer [2022-01-28 14:35:24,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-28 14:35:24,251 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-28 14:35:24,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-28 14:35:24,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-28 14:35:24,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_6.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.01 02:35:23" (1/2) ... [2022-01-28 14:35:24,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28988e17 and model type example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 02:35:24, skipping insertion in model container [2022-01-28 14:35:24,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 02:35:24" (2/2) ... [2022-01-28 14:35:24,256 INFO L111 eAbstractionObserver]: Analyzing ICFG example_6.bpl [2022-01-28 14:35:24,262 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-28 14:35:24,263 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-28 14:35:24,263 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-28 14:35:24,263 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-28 14:35:24,320 INFO L148 ThreadInstanceAdder]: Constructed 36 joinOtherThreadTransitions. [2022-01-28 14:35:24,362 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-28 14:35:24,380 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-28 14:35:24,380 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-01-28 14:35:24,389 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 52 places, 63 transitions, 264 flow [2022-01-28 14:35:24,901 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 4461 states, 4460 states have (on average 4.459865470852018) internal successors, (19891), 4460 states have internal predecessors, (19891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:24,930 INFO L276 IsEmpty]: Start isEmpty. Operand has 4461 states, 4460 states have (on average 4.459865470852018) internal successors, (19891), 4460 states have internal predecessors, (19891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:24,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:24,997 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:24,998 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:24,999 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:25,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:25,006 INFO L85 PathProgramCache]: Analyzing trace with hash 880898761, now seen corresponding path program 1 times [2022-01-28 14:35:25,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:25,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382188391] [2022-01-28 14:35:25,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:25,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:25,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:25,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:25,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:25,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382188391] [2022-01-28 14:35:25,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382188391] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:25,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:25,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-28 14:35:25,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432217168] [2022-01-28 14:35:25,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:25,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-28 14:35:25,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:25,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-28 14:35:25,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-28 14:35:25,366 INFO L87 Difference]: Start difference. First operand has 4461 states, 4460 states have (on average 4.459865470852018) internal successors, (19891), 4460 states have internal predecessors, (19891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:25,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:25,488 INFO L93 Difference]: Finished difference Result 3543 states and 15328 transitions. [2022-01-28 14:35:25,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-28 14:35:25,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:25,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:25,539 INFO L225 Difference]: With dead ends: 3543 [2022-01-28 14:35:25,539 INFO L226 Difference]: Without dead ends: 3543 [2022-01-28 14:35:25,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-28 14:35:25,545 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 41 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:25,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 25 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:25,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3543 states. [2022-01-28 14:35:25,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3543 to 3543. [2022-01-28 14:35:25,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3543 states, 3542 states have (on average 4.327498588368154) internal successors, (15328), 3542 states have internal predecessors, (15328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:25,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3543 states to 3543 states and 15328 transitions. [2022-01-28 14:35:25,874 INFO L78 Accepts]: Start accepts. Automaton has 3543 states and 15328 transitions. Word has length 25 [2022-01-28 14:35:25,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:25,876 INFO L470 AbstractCegarLoop]: Abstraction has 3543 states and 15328 transitions. [2022-01-28 14:35:25,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:25,876 INFO L276 IsEmpty]: Start isEmpty. Operand 3543 states and 15328 transitions. [2022-01-28 14:35:25,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:25,939 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:25,939 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:25,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-28 14:35:25,940 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:25,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:25,941 INFO L85 PathProgramCache]: Analyzing trace with hash -203118425, now seen corresponding path program 1 times [2022-01-28 14:35:25,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:25,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546406650] [2022-01-28 14:35:25,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:25,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:25,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:25,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:25,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:25,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546406650] [2022-01-28 14:35:25,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546406650] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:25,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:25,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-28 14:35:25,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547847562] [2022-01-28 14:35:25,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:25,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-28 14:35:25,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:25,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-28 14:35:25,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-28 14:35:25,974 INFO L87 Difference]: Start difference. First operand 3543 states and 15328 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:26,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:26,121 INFO L93 Difference]: Finished difference Result 2976 states and 12439 transitions. [2022-01-28 14:35:26,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-28 14:35:26,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:26,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:26,155 INFO L225 Difference]: With dead ends: 2976 [2022-01-28 14:35:26,155 INFO L226 Difference]: Without dead ends: 2976 [2022-01-28 14:35:26,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-28 14:35:26,160 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 37 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:26,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 21 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:26,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2976 states. [2022-01-28 14:35:26,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2976 to 2976. [2022-01-28 14:35:26,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2976 states, 2975 states have (on average 4.181176470588236) internal successors, (12439), 2975 states have internal predecessors, (12439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:26,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2976 states to 2976 states and 12439 transitions. [2022-01-28 14:35:26,340 INFO L78 Accepts]: Start accepts. Automaton has 2976 states and 12439 transitions. Word has length 25 [2022-01-28 14:35:26,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:26,355 INFO L470 AbstractCegarLoop]: Abstraction has 2976 states and 12439 transitions. [2022-01-28 14:35:26,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:26,355 INFO L276 IsEmpty]: Start isEmpty. Operand 2976 states and 12439 transitions. [2022-01-28 14:35:26,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:26,365 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:26,375 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:26,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-28 14:35:26,376 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:26,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:26,377 INFO L85 PathProgramCache]: Analyzing trace with hash 872033107, now seen corresponding path program 1 times [2022-01-28 14:35:26,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:26,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166655651] [2022-01-28 14:35:26,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:26,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:26,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:26,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:26,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166655651] [2022-01-28 14:35:26,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166655651] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:26,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:26,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-28 14:35:26,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785781065] [2022-01-28 14:35:26,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:26,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-28 14:35:26,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:26,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-28 14:35:26,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-28 14:35:26,398 INFO L87 Difference]: Start difference. First operand 2976 states and 12439 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:26,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:26,444 INFO L93 Difference]: Finished difference Result 2238 states and 9226 transitions. [2022-01-28 14:35:26,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-28 14:35:26,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:26,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:26,457 INFO L225 Difference]: With dead ends: 2238 [2022-01-28 14:35:26,457 INFO L226 Difference]: Without dead ends: 2238 [2022-01-28 14:35:26,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-28 14:35:26,458 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 36 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:26,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 29 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:35:26,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2238 states. [2022-01-28 14:35:26,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2238 to 2238. [2022-01-28 14:35:26,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2238 states, 2237 states have (on average 4.124273580688422) internal successors, (9226), 2237 states have internal predecessors, (9226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:26,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2238 states to 2238 states and 9226 transitions. [2022-01-28 14:35:26,529 INFO L78 Accepts]: Start accepts. Automaton has 2238 states and 9226 transitions. Word has length 25 [2022-01-28 14:35:26,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:26,529 INFO L470 AbstractCegarLoop]: Abstraction has 2238 states and 9226 transitions. [2022-01-28 14:35:26,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:26,529 INFO L276 IsEmpty]: Start isEmpty. Operand 2238 states and 9226 transitions. [2022-01-28 14:35:26,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:26,535 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:26,535 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:26,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-28 14:35:26,536 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:26,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:26,536 INFO L85 PathProgramCache]: Analyzing trace with hash 296100981, now seen corresponding path program 1 times [2022-01-28 14:35:26,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:26,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169664035] [2022-01-28 14:35:26,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:26,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:26,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:26,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:26,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:26,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169664035] [2022-01-28 14:35:26,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169664035] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:26,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:26,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-28 14:35:26,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37814554] [2022-01-28 14:35:26,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:26,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-28 14:35:26,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:26,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-28 14:35:26,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-28 14:35:26,558 INFO L87 Difference]: Start difference. First operand 2238 states and 9226 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:26,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:26,586 INFO L93 Difference]: Finished difference Result 1701 states and 6967 transitions. [2022-01-28 14:35:26,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-28 14:35:26,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:26,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:26,596 INFO L225 Difference]: With dead ends: 1701 [2022-01-28 14:35:26,596 INFO L226 Difference]: Without dead ends: 1701 [2022-01-28 14:35:26,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-28 14:35:26,597 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 17 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:26,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 33 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:35:26,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2022-01-28 14:35:26,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 1701. [2022-01-28 14:35:26,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1701 states, 1700 states have (on average 4.098235294117647) internal successors, (6967), 1700 states have internal predecessors, (6967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:26,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1701 states to 1701 states and 6967 transitions. [2022-01-28 14:35:26,637 INFO L78 Accepts]: Start accepts. Automaton has 1701 states and 6967 transitions. Word has length 25 [2022-01-28 14:35:26,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:26,637 INFO L470 AbstractCegarLoop]: Abstraction has 1701 states and 6967 transitions. [2022-01-28 14:35:26,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:26,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1701 states and 6967 transitions. [2022-01-28 14:35:26,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:26,667 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:26,667 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:26,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-28 14:35:26,667 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:26,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:26,668 INFO L85 PathProgramCache]: Analyzing trace with hash -540031151, now seen corresponding path program 1 times [2022-01-28 14:35:26,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:26,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829079524] [2022-01-28 14:35:26,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:26,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:26,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:26,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:26,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:26,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829079524] [2022-01-28 14:35:26,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829079524] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:26,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:26,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-28 14:35:26,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928989200] [2022-01-28 14:35:26,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:26,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-28 14:35:26,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:26,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-28 14:35:26,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-28 14:35:26,688 INFO L87 Difference]: Start difference. First operand 1701 states and 6967 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:26,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:26,707 INFO L93 Difference]: Finished difference Result 1458 states and 5833 transitions. [2022-01-28 14:35:26,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-28 14:35:26,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:26,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:26,714 INFO L225 Difference]: With dead ends: 1458 [2022-01-28 14:35:26,715 INFO L226 Difference]: Without dead ends: 1458 [2022-01-28 14:35:26,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-28 14:35:26,715 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 8 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:26,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 17 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:35:26,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2022-01-28 14:35:26,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1458. [2022-01-28 14:35:26,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 1457 states have (on average 4.003431708991077) internal successors, (5833), 1457 states have internal predecessors, (5833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:26,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 5833 transitions. [2022-01-28 14:35:26,753 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 5833 transitions. Word has length 25 [2022-01-28 14:35:26,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:26,753 INFO L470 AbstractCegarLoop]: Abstraction has 1458 states and 5833 transitions. [2022-01-28 14:35:26,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:26,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 5833 transitions. [2022-01-28 14:35:26,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:26,757 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:26,758 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:26,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-28 14:35:26,758 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:26,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:26,758 INFO L85 PathProgramCache]: Analyzing trace with hash 377713333, now seen corresponding path program 1 times [2022-01-28 14:35:26,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:26,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537376908] [2022-01-28 14:35:26,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:26,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:26,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:27,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:27,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:27,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537376908] [2022-01-28 14:35:27,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537376908] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:27,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:27,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:27,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465578783] [2022-01-28 14:35:27,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:27,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:27,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:27,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:27,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:27,049 INFO L87 Difference]: Start difference. First operand 1458 states and 5833 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:27,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:27,227 INFO L93 Difference]: Finished difference Result 3167 states and 11759 transitions. [2022-01-28 14:35:27,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:27,228 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:27,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:27,244 INFO L225 Difference]: With dead ends: 3167 [2022-01-28 14:35:27,244 INFO L226 Difference]: Without dead ends: 3008 [2022-01-28 14:35:27,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:27,245 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 103 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:27,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 172 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:27,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2022-01-28 14:35:27,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 1530. [2022-01-28 14:35:27,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1530 states, 1529 states have (on average 3.998037933289732) internal successors, (6113), 1529 states have internal predecessors, (6113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:27,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 6113 transitions. [2022-01-28 14:35:27,368 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 6113 transitions. Word has length 25 [2022-01-28 14:35:27,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:27,368 INFO L470 AbstractCegarLoop]: Abstraction has 1530 states and 6113 transitions. [2022-01-28 14:35:27,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:27,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 6113 transitions. [2022-01-28 14:35:27,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:27,372 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:27,372 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:27,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-28 14:35:27,373 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:27,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:27,373 INFO L85 PathProgramCache]: Analyzing trace with hash -630584651, now seen corresponding path program 2 times [2022-01-28 14:35:27,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:27,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236329842] [2022-01-28 14:35:27,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:27,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:27,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:27,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:27,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:27,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236329842] [2022-01-28 14:35:27,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236329842] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:27,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:27,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:27,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31199821] [2022-01-28 14:35:27,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:27,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:27,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:27,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:27,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:27,561 INFO L87 Difference]: Start difference. First operand 1530 states and 6113 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:27,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:27,719 INFO L93 Difference]: Finished difference Result 3230 states and 11966 transitions. [2022-01-28 14:35:27,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:27,720 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:27,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:27,730 INFO L225 Difference]: With dead ends: 3230 [2022-01-28 14:35:27,730 INFO L226 Difference]: Without dead ends: 2976 [2022-01-28 14:35:27,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:27,731 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 122 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:27,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 143 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:27,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2976 states. [2022-01-28 14:35:27,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2976 to 1498. [2022-01-28 14:35:27,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 1497 states have (on average 3.997995991983968) internal successors, (5985), 1497 states have internal predecessors, (5985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:27,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 5985 transitions. [2022-01-28 14:35:27,775 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 5985 transitions. Word has length 25 [2022-01-28 14:35:27,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:27,775 INFO L470 AbstractCegarLoop]: Abstraction has 1498 states and 5985 transitions. [2022-01-28 14:35:27,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:27,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 5985 transitions. [2022-01-28 14:35:27,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:27,778 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:27,778 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:27,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-28 14:35:27,779 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:27,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:27,779 INFO L85 PathProgramCache]: Analyzing trace with hash 416328017, now seen corresponding path program 3 times [2022-01-28 14:35:27,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:27,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822947202] [2022-01-28 14:35:27,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:27,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:28,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:28,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:28,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822947202] [2022-01-28 14:35:28,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822947202] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:28,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:28,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:28,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91219947] [2022-01-28 14:35:28,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:28,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:28,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:28,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:28,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:28,038 INFO L87 Difference]: Start difference. First operand 1498 states and 5985 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:28,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:28,167 INFO L93 Difference]: Finished difference Result 3118 states and 11565 transitions. [2022-01-28 14:35:28,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:28,168 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:28,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:28,179 INFO L225 Difference]: With dead ends: 3118 [2022-01-28 14:35:28,180 INFO L226 Difference]: Without dead ends: 2959 [2022-01-28 14:35:28,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:28,182 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 101 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:28,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 163 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:28,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2022-01-28 14:35:28,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 1514. [2022-01-28 14:35:28,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1514 states, 1513 states have (on average 3.9874421678783873) internal successors, (6033), 1513 states have internal predecessors, (6033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:28,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 6033 transitions. [2022-01-28 14:35:28,234 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 6033 transitions. Word has length 25 [2022-01-28 14:35:28,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:28,234 INFO L470 AbstractCegarLoop]: Abstraction has 1514 states and 6033 transitions. [2022-01-28 14:35:28,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:28,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 6033 transitions. [2022-01-28 14:35:28,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:28,238 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:28,238 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:28,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-28 14:35:28,245 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:28,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:28,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1173606733, now seen corresponding path program 4 times [2022-01-28 14:35:28,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:28,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764392289] [2022-01-28 14:35:28,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:28,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:28,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:28,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:28,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:28,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764392289] [2022-01-28 14:35:28,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764392289] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:28,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:28,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:28,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139043232] [2022-01-28 14:35:28,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:28,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:28,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:28,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:28,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:28,447 INFO L87 Difference]: Start difference. First operand 1514 states and 6033 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:28,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:28,928 INFO L93 Difference]: Finished difference Result 3148 states and 11658 transitions. [2022-01-28 14:35:28,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:28,929 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:28,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:28,951 INFO L225 Difference]: With dead ends: 3148 [2022-01-28 14:35:28,952 INFO L226 Difference]: Without dead ends: 2943 [2022-01-28 14:35:28,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:28,954 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 99 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:28,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 164 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-28 14:35:28,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2943 states. [2022-01-28 14:35:29,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2943 to 1498. [2022-01-28 14:35:29,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 1497 states have (on average 3.9926519706078825) internal successors, (5977), 1497 states have internal predecessors, (5977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:29,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 5977 transitions. [2022-01-28 14:35:29,033 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 5977 transitions. Word has length 25 [2022-01-28 14:35:29,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:29,033 INFO L470 AbstractCegarLoop]: Abstraction has 1498 states and 5977 transitions. [2022-01-28 14:35:29,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:29,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 5977 transitions. [2022-01-28 14:35:29,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:29,038 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:29,038 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:29,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-28 14:35:29,039 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:29,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:29,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1811770219, now seen corresponding path program 5 times [2022-01-28 14:35:29,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:29,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272532723] [2022-01-28 14:35:29,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:29,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:29,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:29,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:29,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272532723] [2022-01-28 14:35:29,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272532723] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:29,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:29,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:29,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594019418] [2022-01-28 14:35:29,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:29,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:29,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:29,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:29,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:29,353 INFO L87 Difference]: Start difference. First operand 1498 states and 5977 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:29,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:29,503 INFO L93 Difference]: Finished difference Result 3258 states and 12063 transitions. [2022-01-28 14:35:29,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:29,504 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:29,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:29,514 INFO L225 Difference]: With dead ends: 3258 [2022-01-28 14:35:29,515 INFO L226 Difference]: Without dead ends: 3069 [2022-01-28 14:35:29,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:29,515 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 109 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:29,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 151 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:29,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3069 states. [2022-01-28 14:35:29,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3069 to 1561. [2022-01-28 14:35:29,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1561 states, 1560 states have (on average 3.9641025641025642) internal successors, (6184), 1560 states have internal predecessors, (6184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:29,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 6184 transitions. [2022-01-28 14:35:29,571 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 6184 transitions. Word has length 25 [2022-01-28 14:35:29,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:29,572 INFO L470 AbstractCegarLoop]: Abstraction has 1561 states and 6184 transitions. [2022-01-28 14:35:29,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:29,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 6184 transitions. [2022-01-28 14:35:29,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:29,583 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:29,583 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:29,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-28 14:35:29,583 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:29,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:29,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1513717261, now seen corresponding path program 6 times [2022-01-28 14:35:29,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:29,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912583640] [2022-01-28 14:35:29,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:29,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:29,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:29,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:29,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:29,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912583640] [2022-01-28 14:35:29,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912583640] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:29,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:29,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:29,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429540741] [2022-01-28 14:35:29,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:29,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:29,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:29,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:29,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:29,876 INFO L87 Difference]: Start difference. First operand 1561 states and 6184 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:30,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:30,015 INFO L93 Difference]: Finished difference Result 3291 states and 12146 transitions. [2022-01-28 14:35:30,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:30,015 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:30,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:30,025 INFO L225 Difference]: With dead ends: 3291 [2022-01-28 14:35:30,025 INFO L226 Difference]: Without dead ends: 2982 [2022-01-28 14:35:30,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:30,027 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 122 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:30,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 138 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:30,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2982 states. [2022-01-28 14:35:30,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2982 to 1474. [2022-01-28 14:35:30,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1473 states have (on average 3.9979633401221997) internal successors, (5889), 1473 states have internal predecessors, (5889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:30,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 5889 transitions. [2022-01-28 14:35:30,100 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 5889 transitions. Word has length 25 [2022-01-28 14:35:30,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:30,100 INFO L470 AbstractCegarLoop]: Abstraction has 1474 states and 5889 transitions. [2022-01-28 14:35:30,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:30,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 5889 transitions. [2022-01-28 14:35:30,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:30,121 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:30,121 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:30,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-28 14:35:30,121 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:30,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:30,122 INFO L85 PathProgramCache]: Analyzing trace with hash 2045589173, now seen corresponding path program 7 times [2022-01-28 14:35:30,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:30,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857693865] [2022-01-28 14:35:30,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:30,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:30,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:30,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:30,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:30,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857693865] [2022-01-28 14:35:30,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857693865] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:30,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:30,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:30,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105029218] [2022-01-28 14:35:30,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:30,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:30,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:30,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:30,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:30,347 INFO L87 Difference]: Start difference. First operand 1474 states and 5889 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:30,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:30,478 INFO L93 Difference]: Finished difference Result 3140 states and 11663 transitions. [2022-01-28 14:35:30,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:30,479 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:30,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:30,488 INFO L225 Difference]: With dead ends: 3140 [2022-01-28 14:35:30,488 INFO L226 Difference]: Without dead ends: 2981 [2022-01-28 14:35:30,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:30,489 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 110 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:30,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 148 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:30,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2022-01-28 14:35:30,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 1522. [2022-01-28 14:35:30,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1522 states, 1521 states have (on average 3.992767915844839) internal successors, (6073), 1521 states have internal predecessors, (6073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:30,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 6073 transitions. [2022-01-28 14:35:30,547 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 6073 transitions. Word has length 25 [2022-01-28 14:35:30,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:30,547 INFO L470 AbstractCegarLoop]: Abstraction has 1522 states and 6073 transitions. [2022-01-28 14:35:30,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:30,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 6073 transitions. [2022-01-28 14:35:30,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:30,550 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:30,550 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:30,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-28 14:35:30,550 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:30,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:30,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1037291189, now seen corresponding path program 8 times [2022-01-28 14:35:30,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:30,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328454594] [2022-01-28 14:35:30,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:30,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:30,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:30,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:30,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:30,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328454594] [2022-01-28 14:35:30,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328454594] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:30,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:30,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:30,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262790964] [2022-01-28 14:35:30,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:30,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:30,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:30,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:30,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:30,753 INFO L87 Difference]: Start difference. First operand 1522 states and 6073 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:30,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:30,905 INFO L93 Difference]: Finished difference Result 3203 states and 11870 transitions. [2022-01-28 14:35:30,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:30,905 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:30,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:30,914 INFO L225 Difference]: With dead ends: 3203 [2022-01-28 14:35:30,914 INFO L226 Difference]: Without dead ends: 2949 [2022-01-28 14:35:30,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:30,915 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 94 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:30,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 185 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:30,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2949 states. [2022-01-28 14:35:30,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2949 to 1490. [2022-01-28 14:35:30,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1490 states, 1489 states have (on average 3.992612491605104) internal successors, (5945), 1489 states have internal predecessors, (5945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:30,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 5945 transitions. [2022-01-28 14:35:30,971 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 5945 transitions. Word has length 25 [2022-01-28 14:35:30,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:30,971 INFO L470 AbstractCegarLoop]: Abstraction has 1490 states and 5945 transitions. [2022-01-28 14:35:30,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:30,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 5945 transitions. [2022-01-28 14:35:30,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:30,974 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:30,974 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:30,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-28 14:35:30,975 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:30,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:30,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1260344617, now seen corresponding path program 9 times [2022-01-28 14:35:30,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:30,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34787862] [2022-01-28 14:35:30,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:30,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:30,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:31,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:31,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:31,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34787862] [2022-01-28 14:35:31,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34787862] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:31,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:31,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:31,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831268854] [2022-01-28 14:35:31,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:31,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:31,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:31,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:31,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:31,216 INFO L87 Difference]: Start difference. First operand 1490 states and 5945 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:31,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:31,537 INFO L93 Difference]: Finished difference Result 3089 states and 11464 transitions. [2022-01-28 14:35:31,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:31,543 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:31,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:31,564 INFO L225 Difference]: With dead ends: 3089 [2022-01-28 14:35:31,564 INFO L226 Difference]: Without dead ends: 2930 [2022-01-28 14:35:31,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:31,565 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 102 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:31,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 165 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-28 14:35:31,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2022-01-28 14:35:31,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1506. [2022-01-28 14:35:31,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 3.9820598006644516) internal successors, (5993), 1505 states have internal predecessors, (5993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:31,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 5993 transitions. [2022-01-28 14:35:31,652 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 5993 transitions. Word has length 25 [2022-01-28 14:35:31,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:31,653 INFO L470 AbstractCegarLoop]: Abstraction has 1506 states and 5993 transitions. [2022-01-28 14:35:31,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:31,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 5993 transitions. [2022-01-28 14:35:31,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:31,657 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:31,657 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:31,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-28 14:35:31,657 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:31,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:31,657 INFO L85 PathProgramCache]: Analyzing trace with hash -252046633, now seen corresponding path program 10 times [2022-01-28 14:35:31,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:31,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250190820] [2022-01-28 14:35:31,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:31,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:31,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:31,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:31,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:31,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250190820] [2022-01-28 14:35:31,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250190820] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:31,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:31,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:31,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48672954] [2022-01-28 14:35:31,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:31,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:31,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:31,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:31,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:31,905 INFO L87 Difference]: Start difference. First operand 1506 states and 5993 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:32,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:32,184 INFO L93 Difference]: Finished difference Result 3117 states and 11552 transitions. [2022-01-28 14:35:32,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:32,185 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:32,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:32,195 INFO L225 Difference]: With dead ends: 3117 [2022-01-28 14:35:32,195 INFO L226 Difference]: Without dead ends: 2914 [2022-01-28 14:35:32,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:32,195 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 107 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:32,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 156 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-28 14:35:32,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2914 states. [2022-01-28 14:35:32,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2914 to 1490. [2022-01-28 14:35:32,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1490 states, 1489 states have (on average 3.987239758226998) internal successors, (5937), 1489 states have internal predecessors, (5937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:32,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 5937 transitions. [2022-01-28 14:35:32,296 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 5937 transitions. Word has length 25 [2022-01-28 14:35:32,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:32,297 INFO L470 AbstractCegarLoop]: Abstraction has 1490 states and 5937 transitions. [2022-01-28 14:35:32,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:32,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 5937 transitions. [2022-01-28 14:35:32,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:32,301 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:32,301 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:32,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-28 14:35:32,301 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:32,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:32,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1436199639, now seen corresponding path program 11 times [2022-01-28 14:35:32,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:32,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823649161] [2022-01-28 14:35:32,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:32,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:32,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:32,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:32,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:32,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823649161] [2022-01-28 14:35:32,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823649161] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:32,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:32,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:32,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777300012] [2022-01-28 14:35:32,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:32,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:32,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:32,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:32,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:32,612 INFO L87 Difference]: Start difference. First operand 1490 states and 5937 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:32,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:32,783 INFO L93 Difference]: Finished difference Result 3210 states and 11906 transitions. [2022-01-28 14:35:32,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:32,783 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:32,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:32,794 INFO L225 Difference]: With dead ends: 3210 [2022-01-28 14:35:32,794 INFO L226 Difference]: Without dead ends: 3023 [2022-01-28 14:35:32,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:32,795 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 110 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:32,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 151 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:32,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3023 states. [2022-01-28 14:35:32,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3023 to 1536. [2022-01-28 14:35:32,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1536 states, 1535 states have (on average 3.9700325732899024) internal successors, (6094), 1535 states have internal predecessors, (6094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:32,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1536 states to 1536 states and 6094 transitions. [2022-01-28 14:35:32,904 INFO L78 Accepts]: Start accepts. Automaton has 1536 states and 6094 transitions. Word has length 25 [2022-01-28 14:35:32,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:32,904 INFO L470 AbstractCegarLoop]: Abstraction has 1536 states and 6094 transitions. [2022-01-28 14:35:32,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:32,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1536 states and 6094 transitions. [2022-01-28 14:35:32,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:32,909 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:32,909 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:32,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-28 14:35:32,909 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:32,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:32,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1083060149, now seen corresponding path program 12 times [2022-01-28 14:35:32,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:32,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300720766] [2022-01-28 14:35:32,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:32,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:32,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:33,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:33,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:33,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300720766] [2022-01-28 14:35:33,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300720766] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:33,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:33,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:33,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133785546] [2022-01-28 14:35:33,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:33,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:33,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:33,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:33,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:33,166 INFO L87 Difference]: Start difference. First operand 1536 states and 6094 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:33,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:33,322 INFO L93 Difference]: Finished difference Result 3245 states and 11995 transitions. [2022-01-28 14:35:33,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:33,323 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:33,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:33,333 INFO L225 Difference]: With dead ends: 3245 [2022-01-28 14:35:33,334 INFO L226 Difference]: Without dead ends: 2961 [2022-01-28 14:35:33,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:33,337 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 107 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:33,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 162 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:33,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2022-01-28 14:35:33,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1474. [2022-01-28 14:35:33,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1473 states have (on average 3.992532247114732) internal successors, (5881), 1473 states have internal predecessors, (5881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:33,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 5881 transitions. [2022-01-28 14:35:33,409 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 5881 transitions. Word has length 25 [2022-01-28 14:35:33,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:33,409 INFO L470 AbstractCegarLoop]: Abstraction has 1474 states and 5881 transitions. [2022-01-28 14:35:33,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:33,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 5881 transitions. [2022-01-28 14:35:33,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:33,412 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:33,412 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:33,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-28 14:35:33,412 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:33,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:33,413 INFO L85 PathProgramCache]: Analyzing trace with hash 407565713, now seen corresponding path program 13 times [2022-01-28 14:35:33,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:33,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192258185] [2022-01-28 14:35:33,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:33,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:33,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:33,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:33,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:33,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192258185] [2022-01-28 14:35:33,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192258185] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:33,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:33,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:33,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954383262] [2022-01-28 14:35:33,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:33,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:33,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:33,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:33,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:33,638 INFO L87 Difference]: Start difference. First operand 1474 states and 5881 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:33,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:33,810 INFO L93 Difference]: Finished difference Result 3018 states and 11199 transitions. [2022-01-28 14:35:33,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:33,811 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:33,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:33,817 INFO L225 Difference]: With dead ends: 3018 [2022-01-28 14:35:33,818 INFO L226 Difference]: Without dead ends: 2859 [2022-01-28 14:35:33,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:33,820 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 108 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:33,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 153 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:33,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2859 states. [2022-01-28 14:35:33,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2859 to 1498. [2022-01-28 14:35:33,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 1497 states have (on average 3.984635938543754) internal successors, (5965), 1497 states have internal predecessors, (5965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:33,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 5965 transitions. [2022-01-28 14:35:33,888 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 5965 transitions. Word has length 25 [2022-01-28 14:35:33,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:33,888 INFO L470 AbstractCegarLoop]: Abstraction has 1498 states and 5965 transitions. [2022-01-28 14:35:33,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:33,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 5965 transitions. [2022-01-28 14:35:33,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:33,907 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:33,907 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:33,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-28 14:35:33,908 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:33,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:33,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1182369037, now seen corresponding path program 14 times [2022-01-28 14:35:33,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:33,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381233512] [2022-01-28 14:35:33,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:33,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:33,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:34,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:34,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:34,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381233512] [2022-01-28 14:35:34,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381233512] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:34,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:34,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:34,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219457751] [2022-01-28 14:35:34,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:34,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:34,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:34,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:34,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:34,095 INFO L87 Difference]: Start difference. First operand 1498 states and 5965 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:34,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:34,248 INFO L93 Difference]: Finished difference Result 3048 states and 11292 transitions. [2022-01-28 14:35:34,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:34,249 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:34,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:34,256 INFO L225 Difference]: With dead ends: 3048 [2022-01-28 14:35:34,256 INFO L226 Difference]: Without dead ends: 2843 [2022-01-28 14:35:34,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:34,256 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 102 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:34,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 161 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:34,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2843 states. [2022-01-28 14:35:34,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2843 to 1482. [2022-01-28 14:35:34,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1482 states, 1481 states have (on average 3.9898717083051993) internal successors, (5909), 1481 states have internal predecessors, (5909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:34,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 5909 transitions. [2022-01-28 14:35:34,290 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 5909 transitions. Word has length 25 [2022-01-28 14:35:34,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:34,290 INFO L470 AbstractCegarLoop]: Abstraction has 1482 states and 5909 transitions. [2022-01-28 14:35:34,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:34,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 5909 transitions. [2022-01-28 14:35:34,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:34,293 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:34,293 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:34,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-28 14:35:34,293 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:34,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:34,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1488628339, now seen corresponding path program 15 times [2022-01-28 14:35:34,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:34,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354304508] [2022-01-28 14:35:34,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:34,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:34,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:34,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:34,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:34,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354304508] [2022-01-28 14:35:34,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354304508] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:34,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:34,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:34,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582455459] [2022-01-28 14:35:34,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:34,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:34,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:34,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:34,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:34,438 INFO L87 Difference]: Start difference. First operand 1482 states and 5909 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:34,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:34,636 INFO L93 Difference]: Finished difference Result 3016 states and 11186 transitions. [2022-01-28 14:35:34,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:34,636 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:34,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:34,643 INFO L225 Difference]: With dead ends: 3016 [2022-01-28 14:35:34,643 INFO L226 Difference]: Without dead ends: 2857 [2022-01-28 14:35:34,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:34,649 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 111 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:34,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 155 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-28 14:35:34,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2022-01-28 14:35:34,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 1498. [2022-01-28 14:35:34,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 1497 states have (on average 3.979291917167669) internal successors, (5957), 1497 states have internal predecessors, (5957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:34,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 5957 transitions. [2022-01-28 14:35:34,704 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 5957 transitions. Word has length 25 [2022-01-28 14:35:34,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:34,704 INFO L470 AbstractCegarLoop]: Abstraction has 1498 states and 5957 transitions. [2022-01-28 14:35:34,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:34,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 5957 transitions. [2022-01-28 14:35:34,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:34,722 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:34,722 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:34,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-28 14:35:34,722 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:34,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:34,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1798040973, now seen corresponding path program 16 times [2022-01-28 14:35:34,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:34,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512060370] [2022-01-28 14:35:34,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:34,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:34,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:34,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:34,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:34,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512060370] [2022-01-28 14:35:34,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512060370] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:34,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:34,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:34,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950003085] [2022-01-28 14:35:34,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:34,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:34,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:34,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:34,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:34,952 INFO L87 Difference]: Start difference. First operand 1498 states and 5957 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:35,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:35,119 INFO L93 Difference]: Finished difference Result 3044 states and 11274 transitions. [2022-01-28 14:35:35,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:35,120 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:35,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:35,127 INFO L225 Difference]: With dead ends: 3044 [2022-01-28 14:35:35,127 INFO L226 Difference]: Without dead ends: 2841 [2022-01-28 14:35:35,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:35,127 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 108 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:35,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 143 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:35,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2841 states. [2022-01-28 14:35:35,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2841 to 1482. [2022-01-28 14:35:35,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1482 states, 1481 states have (on average 3.9844699527346386) internal successors, (5901), 1481 states have internal predecessors, (5901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:35,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 5901 transitions. [2022-01-28 14:35:35,244 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 5901 transitions. Word has length 25 [2022-01-28 14:35:35,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:35,257 INFO L470 AbstractCegarLoop]: Abstraction has 1482 states and 5901 transitions. [2022-01-28 14:35:35,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:35,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 5901 transitions. [2022-01-28 14:35:35,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:35,261 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:35,261 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:35,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-28 14:35:35,261 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:35,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:35,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1389177003, now seen corresponding path program 17 times [2022-01-28 14:35:35,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:35,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376743669] [2022-01-28 14:35:35,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:35,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:35,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:35,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:35,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:35,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376743669] [2022-01-28 14:35:35,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376743669] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:35,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:35,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:35,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843654420] [2022-01-28 14:35:35,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:35,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:35,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:35,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:35,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:35,458 INFO L87 Difference]: Start difference. First operand 1482 states and 5901 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:35,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:35,637 INFO L93 Difference]: Finished difference Result 3090 states and 11455 transitions. [2022-01-28 14:35:35,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:35,638 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:35,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:35,646 INFO L225 Difference]: With dead ends: 3090 [2022-01-28 14:35:35,646 INFO L226 Difference]: Without dead ends: 2901 [2022-01-28 14:35:35,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:35,648 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 91 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:35,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 169 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:35,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2022-01-28 14:35:35,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 1512. [2022-01-28 14:35:35,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1511 states have (on average 3.966909331568498) internal successors, (5994), 1511 states have internal predecessors, (5994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:35,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 5994 transitions. [2022-01-28 14:35:35,745 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 5994 transitions. Word has length 25 [2022-01-28 14:35:35,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:35,745 INFO L470 AbstractCegarLoop]: Abstraction has 1512 states and 5994 transitions. [2022-01-28 14:35:35,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:35,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 5994 transitions. [2022-01-28 14:35:35,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:35,758 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:35,758 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:35,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-28 14:35:35,759 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:35,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:35,759 INFO L85 PathProgramCache]: Analyzing trace with hash 862453299, now seen corresponding path program 18 times [2022-01-28 14:35:35,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:35,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663235161] [2022-01-28 14:35:35,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:35,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:35,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:35,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:35,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:35,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663235161] [2022-01-28 14:35:35,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663235161] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:35,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:35,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:35,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107385668] [2022-01-28 14:35:35,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:35,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:35,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:35,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:35,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:35,915 INFO L87 Difference]: Start difference. First operand 1512 states and 5994 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:36,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:36,041 INFO L93 Difference]: Finished difference Result 3088 states and 11420 transitions. [2022-01-28 14:35:36,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:36,041 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:36,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:36,048 INFO L225 Difference]: With dead ends: 3088 [2022-01-28 14:35:36,048 INFO L226 Difference]: Without dead ends: 2863 [2022-01-28 14:35:36,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:36,049 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 100 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:36,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 155 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:36,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2863 states. [2022-01-28 14:35:36,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2863 to 1474. [2022-01-28 14:35:36,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1473 states have (on average 3.989816700610998) internal successors, (5877), 1473 states have internal predecessors, (5877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:36,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 5877 transitions. [2022-01-28 14:35:36,079 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 5877 transitions. Word has length 25 [2022-01-28 14:35:36,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:36,079 INFO L470 AbstractCegarLoop]: Abstraction has 1474 states and 5877 transitions. [2022-01-28 14:35:36,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:36,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 5877 transitions. [2022-01-28 14:35:36,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:36,082 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:36,082 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:36,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-28 14:35:36,082 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:36,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:36,083 INFO L85 PathProgramCache]: Analyzing trace with hash -483963721, now seen corresponding path program 19 times [2022-01-28 14:35:36,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:36,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548784105] [2022-01-28 14:35:36,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:36,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:36,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:36,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:36,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548784105] [2022-01-28 14:35:36,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548784105] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:36,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:36,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:36,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029145190] [2022-01-28 14:35:36,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:36,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:36,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:36,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:36,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:36,247 INFO L87 Difference]: Start difference. First operand 1474 states and 5877 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:36,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:36,430 INFO L93 Difference]: Finished difference Result 3261 states and 12104 transitions. [2022-01-28 14:35:36,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:36,430 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:36,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:36,438 INFO L225 Difference]: With dead ends: 3261 [2022-01-28 14:35:36,438 INFO L226 Difference]: Without dead ends: 3072 [2022-01-28 14:35:36,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:36,439 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 102 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:36,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 179 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:36,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3072 states. [2022-01-28 14:35:36,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3072 to 1543. [2022-01-28 14:35:36,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1542 states have (on average 3.970817120622568) internal successors, (6123), 1542 states have internal predecessors, (6123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:36,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 6123 transitions. [2022-01-28 14:35:36,477 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 6123 transitions. Word has length 25 [2022-01-28 14:35:36,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:36,477 INFO L470 AbstractCegarLoop]: Abstraction has 1543 states and 6123 transitions. [2022-01-28 14:35:36,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:36,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 6123 transitions. [2022-01-28 14:35:36,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:36,480 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:36,480 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:36,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-28 14:35:36,480 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:36,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:36,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1767666581, now seen corresponding path program 20 times [2022-01-28 14:35:36,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:36,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980399718] [2022-01-28 14:35:36,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:36,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:36,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:36,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:36,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:36,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980399718] [2022-01-28 14:35:36,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980399718] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:36,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:36,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:36,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742783003] [2022-01-28 14:35:36,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:36,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:36,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:36,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:36,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:36,624 INFO L87 Difference]: Start difference. First operand 1543 states and 6123 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:36,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:36,752 INFO L93 Difference]: Finished difference Result 3259 states and 12069 transitions. [2022-01-28 14:35:36,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:36,753 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:36,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:36,761 INFO L225 Difference]: With dead ends: 3259 [2022-01-28 14:35:36,761 INFO L226 Difference]: Without dead ends: 3042 [2022-01-28 14:35:36,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:36,762 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 108 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:36,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 153 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:36,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3042 states. [2022-01-28 14:35:36,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3042 to 1513. [2022-01-28 14:35:36,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1513 states, 1512 states have (on average 3.9781746031746033) internal successors, (6015), 1512 states have internal predecessors, (6015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:36,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 6015 transitions. [2022-01-28 14:35:36,800 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 6015 transitions. Word has length 25 [2022-01-28 14:35:36,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:36,801 INFO L470 AbstractCegarLoop]: Abstraction has 1513 states and 6015 transitions. [2022-01-28 14:35:36,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:36,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 6015 transitions. [2022-01-28 14:35:36,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:36,804 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:36,804 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:36,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-28 14:35:36,804 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:36,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:36,805 INFO L85 PathProgramCache]: Analyzing trace with hash -548597227, now seen corresponding path program 21 times [2022-01-28 14:35:36,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:36,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986781181] [2022-01-28 14:35:36,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:36,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:36,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:36,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:36,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:36,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986781181] [2022-01-28 14:35:36,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986781181] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:36,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:36,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:36,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420962464] [2022-01-28 14:35:36,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:36,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:36,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:36,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:36,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:36,946 INFO L87 Difference]: Start difference. First operand 1513 states and 6015 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:37,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:37,069 INFO L93 Difference]: Finished difference Result 3329 states and 12323 transitions. [2022-01-28 14:35:37,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:37,069 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:37,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:37,077 INFO L225 Difference]: With dead ends: 3329 [2022-01-28 14:35:37,077 INFO L226 Difference]: Without dead ends: 3140 [2022-01-28 14:35:37,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:37,077 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 139 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:37,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 129 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:37,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3140 states. [2022-01-28 14:35:37,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3140 to 1576. [2022-01-28 14:35:37,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 1575 states have (on average 3.9504761904761905) internal successors, (6222), 1575 states have internal predecessors, (6222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:37,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 6222 transitions. [2022-01-28 14:35:37,111 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 6222 transitions. Word has length 25 [2022-01-28 14:35:37,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:37,111 INFO L470 AbstractCegarLoop]: Abstraction has 1576 states and 6222 transitions. [2022-01-28 14:35:37,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:37,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 6222 transitions. [2022-01-28 14:35:37,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:37,114 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:37,114 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:37,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-28 14:35:37,115 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:37,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:37,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1104385515, now seen corresponding path program 22 times [2022-01-28 14:35:37,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:37,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393342310] [2022-01-28 14:35:37,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:37,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:37,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:37,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:37,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:37,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393342310] [2022-01-28 14:35:37,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393342310] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:37,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:37,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:37,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400999900] [2022-01-28 14:35:37,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:37,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:37,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:37,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:37,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:37,249 INFO L87 Difference]: Start difference. First operand 1576 states and 6222 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:37,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:37,373 INFO L93 Difference]: Finished difference Result 3362 states and 12406 transitions. [2022-01-28 14:35:37,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:37,374 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:37,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:37,382 INFO L225 Difference]: With dead ends: 3362 [2022-01-28 14:35:37,382 INFO L226 Difference]: Without dead ends: 3077 [2022-01-28 14:35:37,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:37,383 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 107 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:37,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 158 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:37,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3077 states. [2022-01-28 14:35:37,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3077 to 1513. [2022-01-28 14:35:37,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1513 states, 1512 states have (on average 3.9576719576719577) internal successors, (5984), 1512 states have internal predecessors, (5984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:37,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 5984 transitions. [2022-01-28 14:35:37,420 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 5984 transitions. Word has length 25 [2022-01-28 14:35:37,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:37,420 INFO L470 AbstractCegarLoop]: Abstraction has 1513 states and 5984 transitions. [2022-01-28 14:35:37,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:37,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 5984 transitions. [2022-01-28 14:35:37,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:37,423 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:37,423 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:37,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-28 14:35:37,423 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:37,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:37,424 INFO L85 PathProgramCache]: Analyzing trace with hash 433750387, now seen corresponding path program 23 times [2022-01-28 14:35:37,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:37,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011529602] [2022-01-28 14:35:37,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:37,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:37,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:37,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:37,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:37,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011529602] [2022-01-28 14:35:37,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011529602] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:37,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:37,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:37,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342195353] [2022-01-28 14:35:37,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:37,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:37,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:37,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:37,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:37,557 INFO L87 Difference]: Start difference. First operand 1513 states and 5984 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:37,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:37,677 INFO L93 Difference]: Finished difference Result 3308 states and 12231 transitions. [2022-01-28 14:35:37,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:37,677 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:37,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:37,685 INFO L225 Difference]: With dead ends: 3308 [2022-01-28 14:35:37,685 INFO L226 Difference]: Without dead ends: 3121 [2022-01-28 14:35:37,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:37,687 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 116 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:37,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 138 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:37,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3121 states. [2022-01-28 14:35:37,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3121 to 1559. [2022-01-28 14:35:37,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1559 states, 1558 states have (on average 3.941591784338896) internal successors, (6141), 1558 states have internal predecessors, (6141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:37,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 6141 transitions. [2022-01-28 14:35:37,755 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 6141 transitions. Word has length 25 [2022-01-28 14:35:37,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:37,755 INFO L470 AbstractCegarLoop]: Abstraction has 1559 states and 6141 transitions. [2022-01-28 14:35:37,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:37,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 6141 transitions. [2022-01-28 14:35:37,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:37,758 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:37,759 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:37,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-28 14:35:37,759 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:37,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:37,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1923639211, now seen corresponding path program 24 times [2022-01-28 14:35:37,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:37,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088372593] [2022-01-28 14:35:37,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:37,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:37,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:37,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:37,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088372593] [2022-01-28 14:35:37,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088372593] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:37,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:37,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:37,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836752541] [2022-01-28 14:35:37,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:37,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:37,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:37,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:37,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:37,934 INFO L87 Difference]: Start difference. First operand 1559 states and 6141 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:38,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:38,059 INFO L93 Difference]: Finished difference Result 3343 states and 12320 transitions. [2022-01-28 14:35:38,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:38,059 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:38,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:38,066 INFO L225 Difference]: With dead ends: 3343 [2022-01-28 14:35:38,066 INFO L226 Difference]: Without dead ends: 3020 [2022-01-28 14:35:38,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:38,067 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 112 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:38,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 154 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:38,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3020 states. [2022-01-28 14:35:38,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3020 to 1458. [2022-01-28 14:35:38,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 1457 states have (on average 3.9979409746053536) internal successors, (5825), 1457 states have internal predecessors, (5825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:38,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 5825 transitions. [2022-01-28 14:35:38,099 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 5825 transitions. Word has length 25 [2022-01-28 14:35:38,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:38,099 INFO L470 AbstractCegarLoop]: Abstraction has 1458 states and 5825 transitions. [2022-01-28 14:35:38,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:38,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 5825 transitions. [2022-01-28 14:35:38,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:38,102 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:38,102 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:38,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-28 14:35:38,102 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:38,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:38,102 INFO L85 PathProgramCache]: Analyzing trace with hash -409784651, now seen corresponding path program 25 times [2022-01-28 14:35:38,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:38,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189291197] [2022-01-28 14:35:38,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:38,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:38,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:38,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:38,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189291197] [2022-01-28 14:35:38,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189291197] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:38,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:38,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:38,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682953253] [2022-01-28 14:35:38,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:38,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:38,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:38,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:38,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:38,237 INFO L87 Difference]: Start difference. First operand 1458 states and 5825 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:38,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:38,332 INFO L93 Difference]: Finished difference Result 3146 states and 11689 transitions. [2022-01-28 14:35:38,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:38,332 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:38,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:38,339 INFO L225 Difference]: With dead ends: 3146 [2022-01-28 14:35:38,339 INFO L226 Difference]: Without dead ends: 2987 [2022-01-28 14:35:38,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:38,340 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 105 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:38,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 160 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:38,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2987 states. [2022-01-28 14:35:38,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2987 to 1526. [2022-01-28 14:35:38,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1526 states, 1525 states have (on average 3.9954098360655736) internal successors, (6093), 1525 states have internal predecessors, (6093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:38,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 6093 transitions. [2022-01-28 14:35:38,373 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 6093 transitions. Word has length 25 [2022-01-28 14:35:38,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:38,373 INFO L470 AbstractCegarLoop]: Abstraction has 1526 states and 6093 transitions. [2022-01-28 14:35:38,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:38,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 6093 transitions. [2022-01-28 14:35:38,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:38,376 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:38,376 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:38,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-28 14:35:38,376 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:38,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:38,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1418082635, now seen corresponding path program 26 times [2022-01-28 14:35:38,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:38,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273432142] [2022-01-28 14:35:38,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:38,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:38,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:38,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:38,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:38,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273432142] [2022-01-28 14:35:38,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273432142] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:38,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:38,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:38,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577412362] [2022-01-28 14:35:38,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:38,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:38,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:38,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:38,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:38,519 INFO L87 Difference]: Start difference. First operand 1526 states and 6093 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:38,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:38,614 INFO L93 Difference]: Finished difference Result 3209 states and 11896 transitions. [2022-01-28 14:35:38,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:38,614 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:38,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:38,621 INFO L225 Difference]: With dead ends: 3209 [2022-01-28 14:35:38,621 INFO L226 Difference]: Without dead ends: 2955 [2022-01-28 14:35:38,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:38,622 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 109 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:38,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 146 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:38,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2955 states. [2022-01-28 14:35:38,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2955 to 1494. [2022-01-28 14:35:38,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1493 states have (on average 3.9953114534494305) internal successors, (5965), 1493 states have internal predecessors, (5965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:38,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 5965 transitions. [2022-01-28 14:35:38,654 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 5965 transitions. Word has length 25 [2022-01-28 14:35:38,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:38,654 INFO L470 AbstractCegarLoop]: Abstraction has 1494 states and 5965 transitions. [2022-01-28 14:35:38,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:38,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 5965 transitions. [2022-01-28 14:35:38,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:38,657 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:38,657 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:38,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-28 14:35:38,657 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:38,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:38,657 INFO L85 PathProgramCache]: Analyzing trace with hash -371169967, now seen corresponding path program 27 times [2022-01-28 14:35:38,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:38,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897914258] [2022-01-28 14:35:38,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:38,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:38,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:38,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:38,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:38,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897914258] [2022-01-28 14:35:38,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897914258] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:38,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:38,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:38,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812246371] [2022-01-28 14:35:38,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:38,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:38,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:38,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:38,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:38,800 INFO L87 Difference]: Start difference. First operand 1494 states and 5965 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:38,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:38,909 INFO L93 Difference]: Finished difference Result 3097 states and 11495 transitions. [2022-01-28 14:35:38,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:38,910 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:38,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:38,917 INFO L225 Difference]: With dead ends: 3097 [2022-01-28 14:35:38,917 INFO L226 Difference]: Without dead ends: 2938 [2022-01-28 14:35:38,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:38,918 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 123 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:38,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 138 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:38,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2022-01-28 14:35:38,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1510. [2022-01-28 14:35:38,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1510 states, 1509 states have (on average 3.984758117958913) internal successors, (6013), 1509 states have internal predecessors, (6013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:38,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1510 states to 1510 states and 6013 transitions. [2022-01-28 14:35:38,949 INFO L78 Accepts]: Start accepts. Automaton has 1510 states and 6013 transitions. Word has length 25 [2022-01-28 14:35:38,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:38,949 INFO L470 AbstractCegarLoop]: Abstraction has 1510 states and 6013 transitions. [2022-01-28 14:35:38,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:38,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1510 states and 6013 transitions. [2022-01-28 14:35:38,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:38,952 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:38,952 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:38,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-28 14:35:38,953 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:38,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:38,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1961104717, now seen corresponding path program 28 times [2022-01-28 14:35:38,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:38,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846438643] [2022-01-28 14:35:38,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:38,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:38,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:39,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:39,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:39,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846438643] [2022-01-28 14:35:39,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846438643] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:39,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:39,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:39,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813943169] [2022-01-28 14:35:39,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:39,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:39,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:39,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:39,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:39,085 INFO L87 Difference]: Start difference. First operand 1510 states and 6013 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:39,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:39,240 INFO L93 Difference]: Finished difference Result 3127 states and 11588 transitions. [2022-01-28 14:35:39,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:39,241 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:39,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:39,249 INFO L225 Difference]: With dead ends: 3127 [2022-01-28 14:35:39,249 INFO L226 Difference]: Without dead ends: 2922 [2022-01-28 14:35:39,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:39,250 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 106 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:39,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 160 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:39,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2022-01-28 14:35:39,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 1494. [2022-01-28 14:35:39,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1493 states have (on average 3.989953114534494) internal successors, (5957), 1493 states have internal predecessors, (5957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:39,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 5957 transitions. [2022-01-28 14:35:39,312 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 5957 transitions. Word has length 25 [2022-01-28 14:35:39,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:39,312 INFO L470 AbstractCegarLoop]: Abstraction has 1494 states and 5957 transitions. [2022-01-28 14:35:39,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:39,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 5957 transitions. [2022-01-28 14:35:39,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:39,316 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:39,316 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:39,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-28 14:35:39,316 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:39,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:39,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1695699093, now seen corresponding path program 29 times [2022-01-28 14:35:39,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:39,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455802650] [2022-01-28 14:35:39,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:39,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:39,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:39,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:39,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:39,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455802650] [2022-01-28 14:35:39,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455802650] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:39,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:39,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:39,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900889232] [2022-01-28 14:35:39,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:39,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:39,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:39,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:39,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:39,460 INFO L87 Difference]: Start difference. First operand 1494 states and 5957 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:39,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:39,605 INFO L93 Difference]: Finished difference Result 3237 states and 11993 transitions. [2022-01-28 14:35:39,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:39,605 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:39,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:39,612 INFO L225 Difference]: With dead ends: 3237 [2022-01-28 14:35:39,612 INFO L226 Difference]: Without dead ends: 3048 [2022-01-28 14:35:39,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:39,613 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 104 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:39,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 160 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:39,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3048 states. [2022-01-28 14:35:39,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3048 to 1557. [2022-01-28 14:35:39,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1557 states, 1556 states have (on average 3.961439588688946) internal successors, (6164), 1556 states have internal predecessors, (6164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:39,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1557 states to 1557 states and 6164 transitions. [2022-01-28 14:35:39,658 INFO L78 Accepts]: Start accepts. Automaton has 1557 states and 6164 transitions. Word has length 25 [2022-01-28 14:35:39,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:39,659 INFO L470 AbstractCegarLoop]: Abstraction has 1557 states and 6164 transitions. [2022-01-28 14:35:39,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:39,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1557 states and 6164 transitions. [2022-01-28 14:35:39,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:39,663 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:39,663 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:39,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-28 14:35:39,663 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:39,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:39,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1993752051, now seen corresponding path program 30 times [2022-01-28 14:35:39,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:39,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999738688] [2022-01-28 14:35:39,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:39,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:39,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:39,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:39,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:39,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999738688] [2022-01-28 14:35:39,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999738688] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:39,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:39,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:39,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359965938] [2022-01-28 14:35:39,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:39,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:39,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:39,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:39,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:39,817 INFO L87 Difference]: Start difference. First operand 1557 states and 6164 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:39,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:39,935 INFO L93 Difference]: Finished difference Result 3270 states and 12076 transitions. [2022-01-28 14:35:39,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:39,936 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:39,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:39,943 INFO L225 Difference]: With dead ends: 3270 [2022-01-28 14:35:39,944 INFO L226 Difference]: Without dead ends: 2961 [2022-01-28 14:35:39,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:39,944 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 111 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:39,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 151 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:39,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2022-01-28 14:35:39,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1470. [2022-01-28 14:35:39,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1469 states have (on average 3.995234853641933) internal successors, (5869), 1469 states have internal predecessors, (5869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:39,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 5869 transitions. [2022-01-28 14:35:39,985 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 5869 transitions. Word has length 25 [2022-01-28 14:35:39,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:39,985 INFO L470 AbstractCegarLoop]: Abstraction has 1470 states and 5869 transitions. [2022-01-28 14:35:39,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:39,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 5869 transitions. [2022-01-28 14:35:39,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:39,989 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:39,989 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:39,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-28 14:35:39,989 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:39,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:39,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1911164755, now seen corresponding path program 31 times [2022-01-28 14:35:39,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:39,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497384961] [2022-01-28 14:35:39,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:39,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:39,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:40,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:40,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:40,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497384961] [2022-01-28 14:35:40,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497384961] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:40,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:40,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:40,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275339423] [2022-01-28 14:35:40,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:40,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:40,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:40,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:40,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:40,135 INFO L87 Difference]: Start difference. First operand 1470 states and 5869 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:40,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:40,251 INFO L93 Difference]: Finished difference Result 3113 states and 11574 transitions. [2022-01-28 14:35:40,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:40,251 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:40,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:40,258 INFO L225 Difference]: With dead ends: 3113 [2022-01-28 14:35:40,259 INFO L226 Difference]: Without dead ends: 2954 [2022-01-28 14:35:40,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:40,259 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 112 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:40,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 147 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:40,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2022-01-28 14:35:40,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 1518. [2022-01-28 14:35:40,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1518 states, 1517 states have (on average 3.990112063282795) internal successors, (6053), 1517 states have internal predecessors, (6053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:40,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 6053 transitions. [2022-01-28 14:35:40,297 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 6053 transitions. Word has length 25 [2022-01-28 14:35:40,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:40,297 INFO L470 AbstractCegarLoop]: Abstraction has 1518 states and 6053 transitions. [2022-01-28 14:35:40,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:40,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 6053 transitions. [2022-01-28 14:35:40,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:40,300 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:40,300 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:40,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-28 14:35:40,300 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:40,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:40,301 INFO L85 PathProgramCache]: Analyzing trace with hash 902866771, now seen corresponding path program 32 times [2022-01-28 14:35:40,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:40,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268359452] [2022-01-28 14:35:40,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:40,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:40,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:40,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:40,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:40,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268359452] [2022-01-28 14:35:40,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268359452] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:40,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:40,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:40,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378003782] [2022-01-28 14:35:40,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:40,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:40,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:40,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:40,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:40,429 INFO L87 Difference]: Start difference. First operand 1518 states and 6053 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:40,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:40,547 INFO L93 Difference]: Finished difference Result 3176 states and 11781 transitions. [2022-01-28 14:35:40,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:40,548 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:40,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:40,557 INFO L225 Difference]: With dead ends: 3176 [2022-01-28 14:35:40,557 INFO L226 Difference]: Without dead ends: 2922 [2022-01-28 14:35:40,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:40,557 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 96 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:40,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 171 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:40,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2022-01-28 14:35:40,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 1486. [2022-01-28 14:35:40,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1485 states have (on average 3.98989898989899) internal successors, (5925), 1485 states have internal predecessors, (5925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:40,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5925 transitions. [2022-01-28 14:35:40,592 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5925 transitions. Word has length 25 [2022-01-28 14:35:40,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:40,592 INFO L470 AbstractCegarLoop]: Abstraction has 1486 states and 5925 transitions. [2022-01-28 14:35:40,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:40,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5925 transitions. [2022-01-28 14:35:40,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:40,595 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:40,595 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:40,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-28 14:35:40,595 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:40,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:40,595 INFO L85 PathProgramCache]: Analyzing trace with hash -350012683, now seen corresponding path program 33 times [2022-01-28 14:35:40,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:40,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604688665] [2022-01-28 14:35:40,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:40,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:40,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:40,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:40,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:40,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604688665] [2022-01-28 14:35:40,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604688665] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:40,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:40,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:40,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86888320] [2022-01-28 14:35:40,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:40,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:40,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:40,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:40,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:40,732 INFO L87 Difference]: Start difference. First operand 1486 states and 5925 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:40,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:40,879 INFO L93 Difference]: Finished difference Result 3058 states and 11363 transitions. [2022-01-28 14:35:40,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:40,879 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:40,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:40,887 INFO L225 Difference]: With dead ends: 3058 [2022-01-28 14:35:40,887 INFO L226 Difference]: Without dead ends: 2899 [2022-01-28 14:35:40,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:40,888 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 102 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:40,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 178 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:40,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2022-01-28 14:35:40,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1502. [2022-01-28 14:35:40,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1502 states, 1501 states have (on average 3.979347101932045) internal successors, (5973), 1501 states have internal predecessors, (5973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:40,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 5973 transitions. [2022-01-28 14:35:40,926 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 5973 transitions. Word has length 25 [2022-01-28 14:35:40,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:40,927 INFO L470 AbstractCegarLoop]: Abstraction has 1502 states and 5973 transitions. [2022-01-28 14:35:40,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:40,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 5973 transitions. [2022-01-28 14:35:40,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:40,929 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:40,930 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:40,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-28 14:35:40,930 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:40,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:40,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1330483957, now seen corresponding path program 34 times [2022-01-28 14:35:40,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:40,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039248143] [2022-01-28 14:35:40,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:40,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:40,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:41,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:41,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:41,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039248143] [2022-01-28 14:35:41,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039248143] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:41,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:41,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:41,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111927642] [2022-01-28 14:35:41,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:41,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:41,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:41,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:41,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:41,070 INFO L87 Difference]: Start difference. First operand 1502 states and 5973 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:41,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:41,219 INFO L93 Difference]: Finished difference Result 3082 states and 11439 transitions. [2022-01-28 14:35:41,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:41,219 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:41,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:41,226 INFO L225 Difference]: With dead ends: 3082 [2022-01-28 14:35:41,226 INFO L226 Difference]: Without dead ends: 2883 [2022-01-28 14:35:41,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:41,227 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 103 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:41,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 169 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:41,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2883 states. [2022-01-28 14:35:41,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2883 to 1486. [2022-01-28 14:35:41,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1485 states have (on average 3.9845117845117843) internal successors, (5917), 1485 states have internal predecessors, (5917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:41,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5917 transitions. [2022-01-28 14:35:41,259 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5917 transitions. Word has length 25 [2022-01-28 14:35:41,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:41,259 INFO L470 AbstractCegarLoop]: Abstraction has 1486 states and 5917 transitions. [2022-01-28 14:35:41,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:41,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5917 transitions. [2022-01-28 14:35:41,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:41,262 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:41,262 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:41,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-28 14:35:41,263 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:41,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:41,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1276237067, now seen corresponding path program 35 times [2022-01-28 14:35:41,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:41,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054313147] [2022-01-28 14:35:41,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:41,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:41,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:41,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:41,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:41,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054313147] [2022-01-28 14:35:41,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054313147] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:41,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:41,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:41,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394820355] [2022-01-28 14:35:41,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:41,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:41,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:41,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:41,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:41,397 INFO L87 Difference]: Start difference. First operand 1486 states and 5917 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:41,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:41,526 INFO L93 Difference]: Finished difference Result 3173 states and 11786 transitions. [2022-01-28 14:35:41,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:41,526 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:41,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:41,533 INFO L225 Difference]: With dead ends: 3173 [2022-01-28 14:35:41,533 INFO L226 Difference]: Without dead ends: 2990 [2022-01-28 14:35:41,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:41,534 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 108 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:41,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 162 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:41,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2990 states. [2022-01-28 14:35:41,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2990 to 1530. [2022-01-28 14:35:41,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1530 states, 1529 states have (on average 3.9692609548724658) internal successors, (6069), 1529 states have internal predecessors, (6069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:41,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 6069 transitions. [2022-01-28 14:35:41,565 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 6069 transitions. Word has length 25 [2022-01-28 14:35:41,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:41,566 INFO L470 AbstractCegarLoop]: Abstraction has 1530 states and 6069 transitions. [2022-01-28 14:35:41,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:41,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 6069 transitions. [2022-01-28 14:35:41,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:41,568 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:41,568 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:41,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-28 14:35:41,568 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:41,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:41,569 INFO L85 PathProgramCache]: Analyzing trace with hash 2014398291, now seen corresponding path program 36 times [2022-01-28 14:35:41,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:41,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690114741] [2022-01-28 14:35:41,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:41,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:41,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:41,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:41,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690114741] [2022-01-28 14:35:41,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690114741] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:41,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:41,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:41,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962058204] [2022-01-28 14:35:41,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:41,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:41,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:41,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:41,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:41,697 INFO L87 Difference]: Start difference. First operand 1530 states and 6069 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:41,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:41,819 INFO L93 Difference]: Finished difference Result 3212 states and 11889 transitions. [2022-01-28 14:35:41,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:41,819 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:41,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:41,826 INFO L225 Difference]: With dead ends: 3212 [2022-01-28 14:35:41,827 INFO L226 Difference]: Without dead ends: 2930 [2022-01-28 14:35:41,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:41,827 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 100 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:41,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 163 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:41,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2022-01-28 14:35:41,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1470. [2022-01-28 14:35:41,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1469 states have (on average 3.989788972089857) internal successors, (5861), 1469 states have internal predecessors, (5861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:41,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 5861 transitions. [2022-01-28 14:35:41,859 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 5861 transitions. Word has length 25 [2022-01-28 14:35:41,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:41,860 INFO L470 AbstractCegarLoop]: Abstraction has 1470 states and 5861 transitions. [2022-01-28 14:35:41,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:41,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 5861 transitions. [2022-01-28 14:35:41,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:41,862 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:41,862 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:41,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-28 14:35:41,862 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:41,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:41,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1689199057, now seen corresponding path program 37 times [2022-01-28 14:35:41,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:41,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276610250] [2022-01-28 14:35:41,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:41,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:41,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:41,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:41,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276610250] [2022-01-28 14:35:41,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276610250] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:41,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:41,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:41,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535177790] [2022-01-28 14:35:41,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:41,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:41,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:41,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:41,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:41,994 INFO L87 Difference]: Start difference. First operand 1470 states and 5861 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:42,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:42,111 INFO L93 Difference]: Finished difference Result 2991 states and 11110 transitions. [2022-01-28 14:35:42,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:42,112 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:42,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:42,120 INFO L225 Difference]: With dead ends: 2991 [2022-01-28 14:35:42,120 INFO L226 Difference]: Without dead ends: 2832 [2022-01-28 14:35:42,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:42,121 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 104 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:42,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 161 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:42,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2832 states. [2022-01-28 14:35:42,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2832 to 1494. [2022-01-28 14:35:42,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1493 states have (on average 3.9819156061620897) internal successors, (5945), 1493 states have internal predecessors, (5945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:42,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 5945 transitions. [2022-01-28 14:35:42,165 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 5945 transitions. Word has length 25 [2022-01-28 14:35:42,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:42,167 INFO L470 AbstractCegarLoop]: Abstraction has 1494 states and 5945 transitions. [2022-01-28 14:35:42,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:42,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 5945 transitions. [2022-01-28 14:35:42,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:42,171 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:42,171 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:42,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-28 14:35:42,171 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:42,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:42,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1015833489, now seen corresponding path program 38 times [2022-01-28 14:35:42,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:42,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496553936] [2022-01-28 14:35:42,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:42,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:42,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:42,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:42,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:42,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496553936] [2022-01-28 14:35:42,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496553936] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:42,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:42,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:42,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989162230] [2022-01-28 14:35:42,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:42,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:42,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:42,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:42,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:42,287 INFO L87 Difference]: Start difference. First operand 1494 states and 5945 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:42,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:42,377 INFO L93 Difference]: Finished difference Result 3021 states and 11203 transitions. [2022-01-28 14:35:42,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:42,377 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:42,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:42,384 INFO L225 Difference]: With dead ends: 3021 [2022-01-28 14:35:42,384 INFO L226 Difference]: Without dead ends: 2816 [2022-01-28 14:35:42,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:42,385 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 122 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:42,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 139 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:42,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2816 states. [2022-01-28 14:35:42,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2816 to 1478. [2022-01-28 14:35:42,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1477 states have (on average 3.987136086662153) internal successors, (5889), 1477 states have internal predecessors, (5889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:42,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 5889 transitions. [2022-01-28 14:35:42,444 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 5889 transitions. Word has length 25 [2022-01-28 14:35:42,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:42,444 INFO L470 AbstractCegarLoop]: Abstraction has 1478 states and 5889 transitions. [2022-01-28 14:35:42,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:42,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 5889 transitions. [2022-01-28 14:35:42,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:42,448 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:42,448 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:42,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-28 14:35:42,448 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:42,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:42,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1896007023, now seen corresponding path program 39 times [2022-01-28 14:35:42,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:42,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731157676] [2022-01-28 14:35:42,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:42,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:42,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:42,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:42,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:42,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731157676] [2022-01-28 14:35:42,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731157676] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:42,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:42,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:42,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340477935] [2022-01-28 14:35:42,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:42,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:42,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:42,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:42,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:42,572 INFO L87 Difference]: Start difference. First operand 1478 states and 5889 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:42,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:42,688 INFO L93 Difference]: Finished difference Result 2985 states and 11085 transitions. [2022-01-28 14:35:42,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:42,688 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:42,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:42,695 INFO L225 Difference]: With dead ends: 2985 [2022-01-28 14:35:42,695 INFO L226 Difference]: Without dead ends: 2826 [2022-01-28 14:35:42,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:42,696 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 98 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:42,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 184 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:42,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2826 states. [2022-01-28 14:35:42,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2826 to 1494. [2022-01-28 14:35:42,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1493 states have (on average 3.9765572672471534) internal successors, (5937), 1493 states have internal predecessors, (5937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:42,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 5937 transitions. [2022-01-28 14:35:42,726 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 5937 transitions. Word has length 25 [2022-01-28 14:35:42,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:42,726 INFO L470 AbstractCegarLoop]: Abstraction has 1494 states and 5937 transitions. [2022-01-28 14:35:42,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:42,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 5937 transitions. [2022-01-28 14:35:42,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:42,729 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:42,729 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:42,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-28 14:35:42,729 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:42,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:42,730 INFO L85 PathProgramCache]: Analyzing trace with hash -215510383, now seen corresponding path program 40 times [2022-01-28 14:35:42,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:42,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94822393] [2022-01-28 14:35:42,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:42,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:42,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:42,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:42,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:42,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94822393] [2022-01-28 14:35:42,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94822393] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:42,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:42,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:42,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180986043] [2022-01-28 14:35:42,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:42,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:42,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:42,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:42,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:42,887 INFO L87 Difference]: Start difference. First operand 1494 states and 5937 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:42,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:42,988 INFO L93 Difference]: Finished difference Result 3009 states and 11161 transitions. [2022-01-28 14:35:42,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:42,988 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:42,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:42,995 INFO L225 Difference]: With dead ends: 3009 [2022-01-28 14:35:42,995 INFO L226 Difference]: Without dead ends: 2810 [2022-01-28 14:35:42,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:42,996 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 106 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:42,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 152 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:43,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2810 states. [2022-01-28 14:35:43,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2810 to 1478. [2022-01-28 14:35:43,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1477 states have (on average 3.981719702098849) internal successors, (5881), 1477 states have internal predecessors, (5881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:43,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 5881 transitions. [2022-01-28 14:35:43,027 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 5881 transitions. Word has length 25 [2022-01-28 14:35:43,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:43,027 INFO L470 AbstractCegarLoop]: Abstraction has 1478 states and 5881 transitions. [2022-01-28 14:35:43,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:43,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 5881 transitions. [2022-01-28 14:35:43,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:43,030 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:43,030 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:43,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-28 14:35:43,030 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:43,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:43,030 INFO L85 PathProgramCache]: Analyzing trace with hash -478845069, now seen corresponding path program 41 times [2022-01-28 14:35:43,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:43,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380029612] [2022-01-28 14:35:43,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:43,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:43,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:43,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:43,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:43,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380029612] [2022-01-28 14:35:43,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380029612] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:43,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:43,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:43,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902505351] [2022-01-28 14:35:43,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:43,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:43,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:43,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:43,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:43,161 INFO L87 Difference]: Start difference. First operand 1478 states and 5881 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:43,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:43,286 INFO L93 Difference]: Finished difference Result 3057 states and 11347 transitions. [2022-01-28 14:35:43,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:43,286 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:43,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:43,293 INFO L225 Difference]: With dead ends: 3057 [2022-01-28 14:35:43,293 INFO L226 Difference]: Without dead ends: 2868 [2022-01-28 14:35:43,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:43,294 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 99 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:43,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 167 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:43,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2868 states. [2022-01-28 14:35:43,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2868 to 1506. [2022-01-28 14:35:43,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 3.966112956810631) internal successors, (5969), 1505 states have internal predecessors, (5969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:43,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 5969 transitions. [2022-01-28 14:35:43,328 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 5969 transitions. Word has length 25 [2022-01-28 14:35:43,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:43,331 INFO L470 AbstractCegarLoop]: Abstraction has 1506 states and 5969 transitions. [2022-01-28 14:35:43,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:43,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 5969 transitions. [2022-01-28 14:35:43,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:43,334 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:43,334 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:43,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-28 14:35:43,335 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:43,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:43,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1870989615, now seen corresponding path program 42 times [2022-01-28 14:35:43,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:43,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060328576] [2022-01-28 14:35:43,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:43,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:43,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:43,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:43,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:43,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060328576] [2022-01-28 14:35:43,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060328576] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:43,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:43,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:43,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383860459] [2022-01-28 14:35:43,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:43,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:43,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:43,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:43,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:43,432 INFO L87 Difference]: Start difference. First operand 1506 states and 5969 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:43,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:43,548 INFO L93 Difference]: Finished difference Result 3051 states and 11302 transitions. [2022-01-28 14:35:43,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:43,548 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:43,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:43,557 INFO L225 Difference]: With dead ends: 3051 [2022-01-28 14:35:43,557 INFO L226 Difference]: Without dead ends: 2832 [2022-01-28 14:35:43,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:43,558 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 96 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:43,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 146 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:43,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2832 states. [2022-01-28 14:35:43,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2832 to 1470. [2022-01-28 14:35:43,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1469 states have (on average 3.987066031313819) internal successors, (5857), 1469 states have internal predecessors, (5857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:43,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 5857 transitions. [2022-01-28 14:35:43,603 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 5857 transitions. Word has length 25 [2022-01-28 14:35:43,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:43,603 INFO L470 AbstractCegarLoop]: Abstraction has 1470 states and 5857 transitions. [2022-01-28 14:35:43,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:43,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 5857 transitions. [2022-01-28 14:35:43,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:43,607 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:43,607 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:43,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-01-28 14:35:43,607 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:43,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:43,608 INFO L85 PathProgramCache]: Analyzing trace with hash 426368213, now seen corresponding path program 43 times [2022-01-28 14:35:43,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:43,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279912928] [2022-01-28 14:35:43,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:43,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:43,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:43,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:43,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:43,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279912928] [2022-01-28 14:35:43,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279912928] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:43,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:43,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:43,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158857074] [2022-01-28 14:35:43,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:43,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:43,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:43,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:43,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:43,766 INFO L87 Difference]: Start difference. First operand 1470 states and 5857 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:43,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:43,877 INFO L93 Difference]: Finished difference Result 3217 states and 11965 transitions. [2022-01-28 14:35:43,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:43,877 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:43,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:43,884 INFO L225 Difference]: With dead ends: 3217 [2022-01-28 14:35:43,884 INFO L226 Difference]: Without dead ends: 3028 [2022-01-28 14:35:43,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:43,885 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 108 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:43,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 149 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:43,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3028 states. [2022-01-28 14:35:43,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3028 to 1528. [2022-01-28 14:35:43,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1528 states, 1527 states have (on average 3.97773411918795) internal successors, (6074), 1527 states have internal predecessors, (6074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:43,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1528 states to 1528 states and 6074 transitions. [2022-01-28 14:35:43,918 INFO L78 Accepts]: Start accepts. Automaton has 1528 states and 6074 transitions. Word has length 25 [2022-01-28 14:35:43,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:43,918 INFO L470 AbstractCegarLoop]: Abstraction has 1528 states and 6074 transitions. [2022-01-28 14:35:43,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:43,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1528 states and 6074 transitions. [2022-01-28 14:35:43,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:43,921 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:43,921 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:43,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-01-28 14:35:43,921 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:43,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:43,922 INFO L85 PathProgramCache]: Analyzing trace with hash -965776333, now seen corresponding path program 44 times [2022-01-28 14:35:43,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:43,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530931548] [2022-01-28 14:35:43,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:43,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:43,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:44,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:44,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:44,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530931548] [2022-01-28 14:35:44,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530931548] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:44,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:44,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:44,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448457439] [2022-01-28 14:35:44,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:44,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:44,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:44,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:44,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:44,043 INFO L87 Difference]: Start difference. First operand 1528 states and 6074 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:44,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:44,183 INFO L93 Difference]: Finished difference Result 3211 states and 11920 transitions. [2022-01-28 14:35:44,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:44,183 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:44,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:44,190 INFO L225 Difference]: With dead ends: 3211 [2022-01-28 14:35:44,191 INFO L226 Difference]: Without dead ends: 3000 [2022-01-28 14:35:44,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:44,191 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 100 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:44,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 150 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:44,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3000 states. [2022-01-28 14:35:44,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3000 to 1500. [2022-01-28 14:35:44,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1500 states, 1499 states have (on average 3.983989326217478) internal successors, (5972), 1499 states have internal predecessors, (5972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:44,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 5972 transitions. [2022-01-28 14:35:44,226 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 5972 transitions. Word has length 25 [2022-01-28 14:35:44,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:44,226 INFO L470 AbstractCegarLoop]: Abstraction has 1500 states and 5972 transitions. [2022-01-28 14:35:44,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:44,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 5972 transitions. [2022-01-28 14:35:44,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:44,229 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:44,229 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:44,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-01-28 14:35:44,229 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:44,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:44,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1631017395, now seen corresponding path program 45 times [2022-01-28 14:35:44,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:44,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246176717] [2022-01-28 14:35:44,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:44,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:44,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:44,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:44,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:44,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246176717] [2022-01-28 14:35:44,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246176717] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:44,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:44,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:44,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870901019] [2022-01-28 14:35:44,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:44,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:44,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:44,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:44,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:44,363 INFO L87 Difference]: Start difference. First operand 1500 states and 5972 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:44,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:44,490 INFO L93 Difference]: Finished difference Result 3291 states and 12204 transitions. [2022-01-28 14:35:44,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:44,490 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:44,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:44,498 INFO L225 Difference]: With dead ends: 3291 [2022-01-28 14:35:44,499 INFO L226 Difference]: Without dead ends: 3102 [2022-01-28 14:35:44,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:44,500 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 108 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:44,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 145 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:44,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3102 states. [2022-01-28 14:35:44,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3102 to 1563. [2022-01-28 14:35:44,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1563 states, 1562 states have (on average 3.9558258642765685) internal successors, (6179), 1562 states have internal predecessors, (6179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:44,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 6179 transitions. [2022-01-28 14:35:44,545 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 6179 transitions. Word has length 25 [2022-01-28 14:35:44,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:44,545 INFO L470 AbstractCegarLoop]: Abstraction has 1563 states and 6179 transitions. [2022-01-28 14:35:44,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:44,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 6179 transitions. [2022-01-28 14:35:44,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:44,550 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:44,550 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:44,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-01-28 14:35:44,550 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:44,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:44,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1931867597, now seen corresponding path program 46 times [2022-01-28 14:35:44,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:44,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564103248] [2022-01-28 14:35:44,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:44,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:44,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:44,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:44,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:44,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564103248] [2022-01-28 14:35:44,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564103248] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:44,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:44,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:44,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599481476] [2022-01-28 14:35:44,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:44,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:44,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:44,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:44,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:44,678 INFO L87 Difference]: Start difference. First operand 1563 states and 6179 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:44,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:44,801 INFO L93 Difference]: Finished difference Result 3324 states and 12287 transitions. [2022-01-28 14:35:44,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:44,801 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:44,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:44,809 INFO L225 Difference]: With dead ends: 3324 [2022-01-28 14:35:44,809 INFO L226 Difference]: Without dead ends: 3039 [2022-01-28 14:35:44,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:44,811 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 115 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:44,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 137 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:44,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3039 states. [2022-01-28 14:35:44,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3039 to 1500. [2022-01-28 14:35:44,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1500 states, 1499 states have (on average 3.963975983989326) internal successors, (5942), 1499 states have internal predecessors, (5942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:44,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 5942 transitions. [2022-01-28 14:35:44,842 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 5942 transitions. Word has length 25 [2022-01-28 14:35:44,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:44,843 INFO L470 AbstractCegarLoop]: Abstraction has 1500 states and 5942 transitions. [2022-01-28 14:35:44,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:44,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 5942 transitions. [2022-01-28 14:35:44,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:44,845 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:44,845 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:44,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-01-28 14:35:44,846 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:44,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:44,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1995274769, now seen corresponding path program 47 times [2022-01-28 14:35:44,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:44,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220747391] [2022-01-28 14:35:44,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:44,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:44,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:44,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:44,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:44,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220747391] [2022-01-28 14:35:44,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220747391] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:44,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:44,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:44,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222827192] [2022-01-28 14:35:44,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:44,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:44,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:44,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:44,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:44,975 INFO L87 Difference]: Start difference. First operand 1500 states and 5942 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:45,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:45,106 INFO L93 Difference]: Finished difference Result 3260 states and 12082 transitions. [2022-01-28 14:35:45,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:45,106 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:45,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:45,114 INFO L225 Difference]: With dead ends: 3260 [2022-01-28 14:35:45,114 INFO L226 Difference]: Without dead ends: 3077 [2022-01-28 14:35:45,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:45,115 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 112 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:45,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 152 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:45,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3077 states. [2022-01-28 14:35:45,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3077 to 1544. [2022-01-28 14:35:45,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1544 states, 1543 states have (on average 3.949449125081011) internal successors, (6094), 1543 states have internal predecessors, (6094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:45,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 6094 transitions. [2022-01-28 14:35:45,152 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 6094 transitions. Word has length 25 [2022-01-28 14:35:45,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:45,153 INFO L470 AbstractCegarLoop]: Abstraction has 1544 states and 6094 transitions. [2022-01-28 14:35:45,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:45,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 6094 transitions. [2022-01-28 14:35:45,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:45,156 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:45,156 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:45,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-01-28 14:35:45,157 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:45,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:45,157 INFO L85 PathProgramCache]: Analyzing trace with hash 925755763, now seen corresponding path program 48 times [2022-01-28 14:35:45,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:45,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666000041] [2022-01-28 14:35:45,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:45,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:45,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:45,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:45,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:45,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666000041] [2022-01-28 14:35:45,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666000041] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:45,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:45,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:45,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50750112] [2022-01-28 14:35:45,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:45,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:45,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:45,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:45,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:45,295 INFO L87 Difference]: Start difference. First operand 1544 states and 6094 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:45,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:45,439 INFO L93 Difference]: Finished difference Result 3299 states and 12185 transitions. [2022-01-28 14:35:45,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:45,439 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:45,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:45,446 INFO L225 Difference]: With dead ends: 3299 [2022-01-28 14:35:45,446 INFO L226 Difference]: Without dead ends: 2991 [2022-01-28 14:35:45,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:45,448 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 91 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:45,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 178 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:45,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2991 states. [2022-01-28 14:35:45,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2991 to 1458. [2022-01-28 14:35:45,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 1457 states have (on average 3.9938229238160603) internal successors, (5819), 1457 states have internal predecessors, (5819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:45,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 5819 transitions. [2022-01-28 14:35:45,483 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 5819 transitions. Word has length 25 [2022-01-28 14:35:45,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:45,483 INFO L470 AbstractCegarLoop]: Abstraction has 1458 states and 5819 transitions. [2022-01-28 14:35:45,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:45,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 5819 transitions. [2022-01-28 14:35:45,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:45,486 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:45,486 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:45,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-01-28 14:35:45,486 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:45,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:45,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1259486381, now seen corresponding path program 49 times [2022-01-28 14:35:45,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:45,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636279954] [2022-01-28 14:35:45,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:45,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:45,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:45,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:45,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:45,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636279954] [2022-01-28 14:35:45,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636279954] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:45,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:45,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:45,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505675171] [2022-01-28 14:35:45,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:45,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:45,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:45,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:45,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:45,617 INFO L87 Difference]: Start difference. First operand 1458 states and 5819 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:45,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:45,724 INFO L93 Difference]: Finished difference Result 3080 states and 11471 transitions. [2022-01-28 14:35:45,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:45,725 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:45,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:45,732 INFO L225 Difference]: With dead ends: 3080 [2022-01-28 14:35:45,732 INFO L226 Difference]: Without dead ends: 2921 [2022-01-28 14:35:45,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:45,733 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 114 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:45,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 146 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:45,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2022-01-28 14:35:45,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 1514. [2022-01-28 14:35:45,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1514 states, 1513 states have (on average 3.994051553205552) internal successors, (6043), 1513 states have internal predecessors, (6043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:45,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 6043 transitions. [2022-01-28 14:35:45,764 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 6043 transitions. Word has length 25 [2022-01-28 14:35:45,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:45,765 INFO L470 AbstractCegarLoop]: Abstraction has 1514 states and 6043 transitions. [2022-01-28 14:35:45,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:45,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 6043 transitions. [2022-01-28 14:35:45,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:45,769 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:45,769 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:45,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-01-28 14:35:45,770 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:45,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:45,770 INFO L85 PathProgramCache]: Analyzing trace with hash 2027182931, now seen corresponding path program 50 times [2022-01-28 14:35:45,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:45,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207653994] [2022-01-28 14:35:45,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:45,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:45,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:45,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:45,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207653994] [2022-01-28 14:35:45,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207653994] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:45,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:45,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:45,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085988056] [2022-01-28 14:35:45,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:45,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:45,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:45,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:45,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:45,907 INFO L87 Difference]: Start difference. First operand 1514 states and 6043 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:46,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:46,007 INFO L93 Difference]: Finished difference Result 3143 states and 11678 transitions. [2022-01-28 14:35:46,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:46,007 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:46,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:46,015 INFO L225 Difference]: With dead ends: 3143 [2022-01-28 14:35:46,015 INFO L226 Difference]: Without dead ends: 2889 [2022-01-28 14:35:46,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:46,015 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 112 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:46,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 147 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:46,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2889 states. [2022-01-28 14:35:46,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2889 to 1482. [2022-01-28 14:35:46,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1482 states, 1481 states have (on average 3.9939230249831197) internal successors, (5915), 1481 states have internal predecessors, (5915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:46,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 5915 transitions. [2022-01-28 14:35:46,052 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 5915 transitions. Word has length 25 [2022-01-28 14:35:46,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:46,052 INFO L470 AbstractCegarLoop]: Abstraction has 1482 states and 5915 transitions. [2022-01-28 14:35:46,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:46,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 5915 transitions. [2022-01-28 14:35:46,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:46,054 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:46,054 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:46,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-01-28 14:35:46,055 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:46,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:46,055 INFO L85 PathProgramCache]: Analyzing trace with hash -270452875, now seen corresponding path program 51 times [2022-01-28 14:35:46,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:46,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118543047] [2022-01-28 14:35:46,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:46,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:46,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:46,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:46,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:46,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118543047] [2022-01-28 14:35:46,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118543047] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:46,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:46,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:46,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512201555] [2022-01-28 14:35:46,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:46,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:46,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:46,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:46,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:46,199 INFO L87 Difference]: Start difference. First operand 1482 states and 5915 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:46,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:46,319 INFO L93 Difference]: Finished difference Result 3029 states and 11272 transitions. [2022-01-28 14:35:46,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:46,319 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:46,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:46,326 INFO L225 Difference]: With dead ends: 3029 [2022-01-28 14:35:46,326 INFO L226 Difference]: Without dead ends: 2870 [2022-01-28 14:35:46,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:46,327 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 109 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:46,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 148 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:46,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2870 states. [2022-01-28 14:35:46,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2870 to 1498. [2022-01-28 14:35:46,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 1497 states have (on average 3.9832999331997327) internal successors, (5963), 1497 states have internal predecessors, (5963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:46,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 5963 transitions. [2022-01-28 14:35:46,359 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 5963 transitions. Word has length 25 [2022-01-28 14:35:46,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:46,359 INFO L470 AbstractCegarLoop]: Abstraction has 1498 states and 5963 transitions. [2022-01-28 14:35:46,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:46,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 5963 transitions. [2022-01-28 14:35:46,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:46,362 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:46,362 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:46,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-01-28 14:35:46,362 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:46,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:46,362 INFO L85 PathProgramCache]: Analyzing trace with hash 737845109, now seen corresponding path program 52 times [2022-01-28 14:35:46,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:46,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635505319] [2022-01-28 14:35:46,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:46,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:46,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:46,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:46,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:46,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635505319] [2022-01-28 14:35:46,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635505319] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:46,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:46,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:46,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444373969] [2022-01-28 14:35:46,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:46,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:46,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:46,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:46,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:46,511 INFO L87 Difference]: Start difference. First operand 1498 states and 5963 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:46,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:46,672 INFO L93 Difference]: Finished difference Result 3057 states and 11360 transitions. [2022-01-28 14:35:46,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:46,673 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:46,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:46,682 INFO L225 Difference]: With dead ends: 3057 [2022-01-28 14:35:46,682 INFO L226 Difference]: Without dead ends: 2854 [2022-01-28 14:35:46,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:46,683 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 92 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:46,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 192 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:46,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2854 states. [2022-01-28 14:35:46,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2854 to 1482. [2022-01-28 14:35:46,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1482 states, 1481 states have (on average 3.988521269412559) internal successors, (5907), 1481 states have internal predecessors, (5907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:46,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 5907 transitions. [2022-01-28 14:35:46,724 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 5907 transitions. Word has length 25 [2022-01-28 14:35:46,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:46,724 INFO L470 AbstractCegarLoop]: Abstraction has 1482 states and 5907 transitions. [2022-01-28 14:35:46,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:46,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 5907 transitions. [2022-01-28 14:35:46,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:46,727 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:46,728 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:46,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-01-28 14:35:46,728 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:46,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:46,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1868875915, now seen corresponding path program 53 times [2022-01-28 14:35:46,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:46,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553731676] [2022-01-28 14:35:46,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:46,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:46,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:47,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:47,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:47,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553731676] [2022-01-28 14:35:47,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553731676] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:47,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:47,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:47,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748651370] [2022-01-28 14:35:47,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:47,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:47,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:47,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:47,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:47,048 INFO L87 Difference]: Start difference. First operand 1482 states and 5907 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:47,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:47,213 INFO L93 Difference]: Finished difference Result 3150 states and 11714 transitions. [2022-01-28 14:35:47,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:47,214 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:47,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:47,220 INFO L225 Difference]: With dead ends: 3150 [2022-01-28 14:35:47,220 INFO L226 Difference]: Without dead ends: 2963 [2022-01-28 14:35:47,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:47,221 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 112 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:47,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 155 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:47,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2022-01-28 14:35:47,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 1528. [2022-01-28 14:35:47,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1528 states, 1527 states have (on average 3.971185330713818) internal successors, (6064), 1527 states have internal predecessors, (6064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:47,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1528 states to 1528 states and 6064 transitions. [2022-01-28 14:35:47,249 INFO L78 Accepts]: Start accepts. Automaton has 1528 states and 6064 transitions. Word has length 25 [2022-01-28 14:35:47,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:47,249 INFO L470 AbstractCegarLoop]: Abstraction has 1528 states and 6064 transitions. [2022-01-28 14:35:47,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:47,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1528 states and 6064 transitions. [2022-01-28 14:35:47,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:47,251 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:47,251 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:47,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-01-28 14:35:47,252 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:47,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:47,252 INFO L85 PathProgramCache]: Analyzing trace with hash 2072951891, now seen corresponding path program 54 times [2022-01-28 14:35:47,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:47,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221755911] [2022-01-28 14:35:47,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:47,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:47,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:47,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:47,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:47,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221755911] [2022-01-28 14:35:47,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221755911] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:47,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:47,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:47,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356005609] [2022-01-28 14:35:47,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:47,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:47,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:47,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:47,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:47,375 INFO L87 Difference]: Start difference. First operand 1528 states and 6064 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:47,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:47,459 INFO L93 Difference]: Finished difference Result 3185 states and 11803 transitions. [2022-01-28 14:35:47,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:47,459 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:47,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:47,465 INFO L225 Difference]: With dead ends: 3185 [2022-01-28 14:35:47,465 INFO L226 Difference]: Without dead ends: 2901 [2022-01-28 14:35:47,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:47,465 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 118 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:47,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 148 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:47,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2022-01-28 14:35:47,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 1466. [2022-01-28 14:35:47,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1466 states, 1465 states have (on average 3.9938566552901023) internal successors, (5851), 1465 states have internal predecessors, (5851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:47,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 5851 transitions. [2022-01-28 14:35:47,495 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 5851 transitions. Word has length 25 [2022-01-28 14:35:47,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:47,495 INFO L470 AbstractCegarLoop]: Abstraction has 1466 states and 5851 transitions. [2022-01-28 14:35:47,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:47,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 5851 transitions. [2022-01-28 14:35:47,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:47,497 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:47,497 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:47,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-01-28 14:35:47,497 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:47,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:47,498 INFO L85 PathProgramCache]: Analyzing trace with hash 450115381, now seen corresponding path program 55 times [2022-01-28 14:35:47,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:47,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786443401] [2022-01-28 14:35:47,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:47,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:47,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:47,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:47,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:47,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786443401] [2022-01-28 14:35:47,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786443401] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:47,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:47,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:47,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410479357] [2022-01-28 14:35:47,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:47,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:47,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:47,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:47,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:47,596 INFO L87 Difference]: Start difference. First operand 1466 states and 5851 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:47,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:47,679 INFO L93 Difference]: Finished difference Result 3074 states and 11444 transitions. [2022-01-28 14:35:47,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:47,679 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:47,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:47,685 INFO L225 Difference]: With dead ends: 3074 [2022-01-28 14:35:47,685 INFO L226 Difference]: Without dead ends: 2915 [2022-01-28 14:35:47,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:47,685 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 108 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:47,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 152 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:47,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2022-01-28 14:35:47,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 1514. [2022-01-28 14:35:47,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1514 states, 1513 states have (on average 3.9887640449438204) internal successors, (6035), 1513 states have internal predecessors, (6035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:47,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 6035 transitions. [2022-01-28 14:35:47,713 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 6035 transitions. Word has length 25 [2022-01-28 14:35:47,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:47,713 INFO L470 AbstractCegarLoop]: Abstraction has 1514 states and 6035 transitions. [2022-01-28 14:35:47,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:47,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 6035 transitions. [2022-01-28 14:35:47,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:47,715 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:47,715 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:47,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-01-28 14:35:47,716 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:47,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:47,716 INFO L85 PathProgramCache]: Analyzing trace with hash -558182603, now seen corresponding path program 56 times [2022-01-28 14:35:47,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:47,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697471624] [2022-01-28 14:35:47,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:47,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:47,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:47,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:47,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:47,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697471624] [2022-01-28 14:35:47,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697471624] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:47,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:47,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:47,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218722644] [2022-01-28 14:35:47,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:47,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:47,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:47,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:47,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:47,847 INFO L87 Difference]: Start difference. First operand 1514 states and 6035 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:47,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:47,950 INFO L93 Difference]: Finished difference Result 3137 states and 11651 transitions. [2022-01-28 14:35:47,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:47,950 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:47,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:47,956 INFO L225 Difference]: With dead ends: 3137 [2022-01-28 14:35:47,956 INFO L226 Difference]: Without dead ends: 2883 [2022-01-28 14:35:47,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:47,957 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 112 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:47,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 146 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:47,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2883 states. [2022-01-28 14:35:47,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2883 to 1482. [2022-01-28 14:35:47,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1482 states, 1481 states have (on average 3.988521269412559) internal successors, (5907), 1481 states have internal predecessors, (5907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:47,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 5907 transitions. [2022-01-28 14:35:47,984 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 5907 transitions. Word has length 25 [2022-01-28 14:35:47,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:47,984 INFO L470 AbstractCegarLoop]: Abstraction has 1482 states and 5907 transitions. [2022-01-28 14:35:47,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:47,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 5907 transitions. [2022-01-28 14:35:47,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:47,987 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:47,987 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:47,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-01-28 14:35:47,987 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:47,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:47,987 INFO L85 PathProgramCache]: Analyzing trace with hash 455868149, now seen corresponding path program 57 times [2022-01-28 14:35:47,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:47,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265212093] [2022-01-28 14:35:47,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:47,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:47,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:48,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:48,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:48,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265212093] [2022-01-28 14:35:48,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265212093] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:48,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:48,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:48,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55249184] [2022-01-28 14:35:48,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:48,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:48,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:48,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:48,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:48,114 INFO L87 Difference]: Start difference. First operand 1482 states and 5907 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:48,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:48,242 INFO L93 Difference]: Finished difference Result 3019 states and 11233 transitions. [2022-01-28 14:35:48,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:48,242 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:48,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:48,248 INFO L225 Difference]: With dead ends: 3019 [2022-01-28 14:35:48,249 INFO L226 Difference]: Without dead ends: 2860 [2022-01-28 14:35:48,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:48,250 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 99 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:48,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 185 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:48,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2860 states. [2022-01-28 14:35:48,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2860 to 1498. [2022-01-28 14:35:48,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 1497 states have (on average 3.9779559118236474) internal successors, (5955), 1497 states have internal predecessors, (5955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:48,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 5955 transitions. [2022-01-28 14:35:48,279 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 5955 transitions. Word has length 25 [2022-01-28 14:35:48,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:48,279 INFO L470 AbstractCegarLoop]: Abstraction has 1498 states and 5955 transitions. [2022-01-28 14:35:48,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:48,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 5955 transitions. [2022-01-28 14:35:48,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:48,296 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:48,296 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:48,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-01-28 14:35:48,296 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:48,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:48,296 INFO L85 PathProgramCache]: Analyzing trace with hash 2136364789, now seen corresponding path program 58 times [2022-01-28 14:35:48,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:48,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601843893] [2022-01-28 14:35:48,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:48,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:48,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:48,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:48,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:48,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601843893] [2022-01-28 14:35:48,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601843893] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:48,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:48,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:48,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643780650] [2022-01-28 14:35:48,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:48,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:48,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:48,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:48,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:48,431 INFO L87 Difference]: Start difference. First operand 1498 states and 5955 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:48,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:48,560 INFO L93 Difference]: Finished difference Result 3043 states and 11309 transitions. [2022-01-28 14:35:48,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:48,560 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:48,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:48,567 INFO L225 Difference]: With dead ends: 3043 [2022-01-28 14:35:48,567 INFO L226 Difference]: Without dead ends: 2844 [2022-01-28 14:35:48,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:48,568 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 98 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:48,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 152 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:48,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2844 states. [2022-01-28 14:35:48,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2844 to 1482. [2022-01-28 14:35:48,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1482 states, 1481 states have (on average 3.9831195138419986) internal successors, (5899), 1481 states have internal predecessors, (5899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:48,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 5899 transitions. [2022-01-28 14:35:48,598 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 5899 transitions. Word has length 25 [2022-01-28 14:35:48,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:48,598 INFO L470 AbstractCegarLoop]: Abstraction has 1482 states and 5899 transitions. [2022-01-28 14:35:48,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:48,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 5899 transitions. [2022-01-28 14:35:48,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:48,601 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:48,601 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:48,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-01-28 14:35:48,601 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:48,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:48,601 INFO L85 PathProgramCache]: Analyzing trace with hash -470356235, now seen corresponding path program 59 times [2022-01-28 14:35:48,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:48,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001877302] [2022-01-28 14:35:48,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:48,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:48,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:48,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:48,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:48,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001877302] [2022-01-28 14:35:48,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001877302] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:48,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:48,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:48,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226456903] [2022-01-28 14:35:48,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:48,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:48,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:48,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:48,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:48,730 INFO L87 Difference]: Start difference. First operand 1482 states and 5899 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:48,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:48,850 INFO L93 Difference]: Finished difference Result 3134 states and 11656 transitions. [2022-01-28 14:35:48,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:48,850 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:48,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:48,857 INFO L225 Difference]: With dead ends: 3134 [2022-01-28 14:35:48,858 INFO L226 Difference]: Without dead ends: 2951 [2022-01-28 14:35:48,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:48,858 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 97 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:48,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 160 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:48,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2022-01-28 14:35:48,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 1526. [2022-01-28 14:35:48,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1526 states, 1525 states have (on average 3.9678688524590164) internal successors, (6051), 1525 states have internal predecessors, (6051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:48,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 6051 transitions. [2022-01-28 14:35:48,898 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 6051 transitions. Word has length 25 [2022-01-28 14:35:48,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:48,898 INFO L470 AbstractCegarLoop]: Abstraction has 1526 states and 6051 transitions. [2022-01-28 14:35:48,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:48,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 6051 transitions. [2022-01-28 14:35:48,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:48,901 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:48,901 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:48,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-01-28 14:35:48,901 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:48,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:48,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1474688173, now seen corresponding path program 60 times [2022-01-28 14:35:48,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:48,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983954420] [2022-01-28 14:35:48,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:48,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:48,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:49,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:49,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:49,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983954420] [2022-01-28 14:35:49,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983954420] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:49,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:49,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:49,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16242522] [2022-01-28 14:35:49,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:49,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:49,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:49,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:49,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:49,040 INFO L87 Difference]: Start difference. First operand 1526 states and 6051 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:49,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:49,159 INFO L93 Difference]: Finished difference Result 3173 states and 11759 transitions. [2022-01-28 14:35:49,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:49,159 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:49,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:49,165 INFO L225 Difference]: With dead ends: 3173 [2022-01-28 14:35:49,165 INFO L226 Difference]: Without dead ends: 2891 [2022-01-28 14:35:49,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:49,166 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 97 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:49,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 160 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:49,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2891 states. [2022-01-28 14:35:49,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2891 to 1466. [2022-01-28 14:35:49,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1466 states, 1465 states have (on average 3.98839590443686) internal successors, (5843), 1465 states have internal predecessors, (5843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:49,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 5843 transitions. [2022-01-28 14:35:49,195 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 5843 transitions. Word has length 25 [2022-01-28 14:35:49,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:49,195 INFO L470 AbstractCegarLoop]: Abstraction has 1466 states and 5843 transitions. [2022-01-28 14:35:49,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:49,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 5843 transitions. [2022-01-28 14:35:49,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:49,197 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:49,198 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:49,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-01-28 14:35:49,198 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:49,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:49,198 INFO L85 PathProgramCache]: Analyzing trace with hash -8519017, now seen corresponding path program 61 times [2022-01-28 14:35:49,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:49,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542777459] [2022-01-28 14:35:49,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:49,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:49,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:49,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:49,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542777459] [2022-01-28 14:35:49,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542777459] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:49,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:49,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:49,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972631906] [2022-01-28 14:35:49,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:49,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:49,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:49,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:49,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:49,324 INFO L87 Difference]: Start difference. First operand 1466 states and 5843 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:49,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:49,407 INFO L93 Difference]: Finished difference Result 2948 states and 10970 transitions. [2022-01-28 14:35:49,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:49,407 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:49,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:49,412 INFO L225 Difference]: With dead ends: 2948 [2022-01-28 14:35:49,412 INFO L226 Difference]: Without dead ends: 2789 [2022-01-28 14:35:49,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:49,413 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 100 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:49,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 162 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:49,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2789 states. [2022-01-28 14:35:49,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2789 to 1490. [2022-01-28 14:35:49,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1490 states, 1489 states have (on average 3.9805238415043656) internal successors, (5927), 1489 states have internal predecessors, (5927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:49,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 5927 transitions. [2022-01-28 14:35:49,439 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 5927 transitions. Word has length 25 [2022-01-28 14:35:49,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:49,439 INFO L470 AbstractCegarLoop]: Abstraction has 1490 states and 5927 transitions. [2022-01-28 14:35:49,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:49,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 5927 transitions. [2022-01-28 14:35:49,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:49,441 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:49,441 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:49,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-01-28 14:35:49,442 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:49,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:49,442 INFO L85 PathProgramCache]: Analyzing trace with hash 999778967, now seen corresponding path program 62 times [2022-01-28 14:35:49,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:49,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047467434] [2022-01-28 14:35:49,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:49,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:49,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:49,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:49,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:49,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047467434] [2022-01-28 14:35:49,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047467434] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:49,570 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:49,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:49,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661287368] [2022-01-28 14:35:49,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:49,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:49,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:49,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:49,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:49,571 INFO L87 Difference]: Start difference. First operand 1490 states and 5927 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:49,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:49,663 INFO L93 Difference]: Finished difference Result 2976 states and 11058 transitions. [2022-01-28 14:35:49,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:49,663 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:49,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:49,688 INFO L225 Difference]: With dead ends: 2976 [2022-01-28 14:35:49,688 INFO L226 Difference]: Without dead ends: 2773 [2022-01-28 14:35:49,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:49,688 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 130 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:49,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 131 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:49,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2773 states. [2022-01-28 14:35:49,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2773 to 1474. [2022-01-28 14:35:49,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1473 states have (on average 3.9857433808553973) internal successors, (5871), 1473 states have internal predecessors, (5871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:49,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 5871 transitions. [2022-01-28 14:35:49,731 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 5871 transitions. Word has length 25 [2022-01-28 14:35:49,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:49,731 INFO L470 AbstractCegarLoop]: Abstraction has 1474 states and 5871 transitions. [2022-01-28 14:35:49,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:49,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 5871 transitions. [2022-01-28 14:35:49,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:49,733 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:49,733 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:49,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-01-28 14:35:49,733 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:49,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:49,734 INFO L85 PathProgramCache]: Analyzing trace with hash -855315979, now seen corresponding path program 63 times [2022-01-28 14:35:49,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:49,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773271202] [2022-01-28 14:35:49,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:49,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:49,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:49,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:49,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773271202] [2022-01-28 14:35:49,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773271202] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:49,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:49,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:49,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690077438] [2022-01-28 14:35:49,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:49,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:49,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:49,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:49,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:49,838 INFO L87 Difference]: Start difference. First operand 1474 states and 5871 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:49,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:49,948 INFO L93 Difference]: Finished difference Result 2944 states and 10950 transitions. [2022-01-28 14:35:49,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:49,949 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:49,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:49,958 INFO L225 Difference]: With dead ends: 2944 [2022-01-28 14:35:49,958 INFO L226 Difference]: Without dead ends: 2785 [2022-01-28 14:35:49,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:49,959 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 107 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:49,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 157 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:49,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2785 states. [2022-01-28 14:35:49,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2785 to 1490. [2022-01-28 14:35:49,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1490 states, 1489 states have (on average 3.9751511081262594) internal successors, (5919), 1489 states have internal predecessors, (5919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:50,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 5919 transitions. [2022-01-28 14:35:50,001 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 5919 transitions. Word has length 25 [2022-01-28 14:35:50,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:50,002 INFO L470 AbstractCegarLoop]: Abstraction has 1490 states and 5919 transitions. [2022-01-28 14:35:50,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:50,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 5919 transitions. [2022-01-28 14:35:50,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:50,005 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:50,005 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:50,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-01-28 14:35:50,005 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:50,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:50,005 INFO L85 PathProgramCache]: Analyzing trace with hash -885175657, now seen corresponding path program 64 times [2022-01-28 14:35:50,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:50,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407682801] [2022-01-28 14:35:50,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:50,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:50,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:50,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:50,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:50,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407682801] [2022-01-28 14:35:50,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407682801] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:50,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:50,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:50,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384918715] [2022-01-28 14:35:50,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:50,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:50,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:50,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:50,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:50,121 INFO L87 Difference]: Start difference. First operand 1490 states and 5919 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:50,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:50,264 INFO L93 Difference]: Finished difference Result 2968 states and 11026 transitions. [2022-01-28 14:35:50,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:50,264 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:50,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:50,273 INFO L225 Difference]: With dead ends: 2968 [2022-01-28 14:35:50,273 INFO L226 Difference]: Without dead ends: 2769 [2022-01-28 14:35:50,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:50,274 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 101 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:50,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 147 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:50,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2769 states. [2022-01-28 14:35:50,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2769 to 1474. [2022-01-28 14:35:50,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1473 states have (on average 3.9803122878479296) internal successors, (5863), 1473 states have internal predecessors, (5863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:50,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 5863 transitions. [2022-01-28 14:35:50,311 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 5863 transitions. Word has length 25 [2022-01-28 14:35:50,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:50,311 INFO L470 AbstractCegarLoop]: Abstraction has 1474 states and 5863 transitions. [2022-01-28 14:35:50,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:50,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 5863 transitions. [2022-01-28 14:35:50,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:50,314 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:50,314 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:50,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-01-28 14:35:50,314 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:50,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:50,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1049346711, now seen corresponding path program 65 times [2022-01-28 14:35:50,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:50,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682740748] [2022-01-28 14:35:50,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:50,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:50,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:50,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:50,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:50,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682740748] [2022-01-28 14:35:50,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682740748] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:50,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:50,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:50,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754039017] [2022-01-28 14:35:50,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:50,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:50,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:50,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:50,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:50,445 INFO L87 Difference]: Start difference. First operand 1474 states and 5863 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:50,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:50,552 INFO L93 Difference]: Finished difference Result 3012 states and 11202 transitions. [2022-01-28 14:35:50,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:50,552 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:50,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:50,560 INFO L225 Difference]: With dead ends: 3012 [2022-01-28 14:35:50,560 INFO L226 Difference]: Without dead ends: 2825 [2022-01-28 14:35:50,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:50,560 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 100 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:50,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 160 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:50,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2825 states. [2022-01-28 14:35:50,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2825 to 1502. [2022-01-28 14:35:50,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1502 states, 1501 states have (on average 3.9646902065289806) internal successors, (5951), 1501 states have internal predecessors, (5951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:50,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 5951 transitions. [2022-01-28 14:35:50,609 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 5951 transitions. Word has length 25 [2022-01-28 14:35:50,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:50,609 INFO L470 AbstractCegarLoop]: Abstraction has 1502 states and 5951 transitions. [2022-01-28 14:35:50,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:50,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 5951 transitions. [2022-01-28 14:35:50,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:50,612 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:50,612 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:50,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-01-28 14:35:50,612 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:50,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:50,613 INFO L85 PathProgramCache]: Analyzing trace with hash -993990283, now seen corresponding path program 66 times [2022-01-28 14:35:50,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:50,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043073961] [2022-01-28 14:35:50,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:50,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:50,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:50,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:50,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:50,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043073961] [2022-01-28 14:35:50,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043073961] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:50,734 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:50,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:50,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359908592] [2022-01-28 14:35:50,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:50,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:50,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:50,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:50,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:50,735 INFO L87 Difference]: Start difference. First operand 1502 states and 5951 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:50,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:50,826 INFO L93 Difference]: Finished difference Result 3008 states and 11162 transitions. [2022-01-28 14:35:50,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:50,827 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:50,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:50,834 INFO L225 Difference]: With dead ends: 3008 [2022-01-28 14:35:50,834 INFO L226 Difference]: Without dead ends: 2789 [2022-01-28 14:35:50,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:50,835 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 106 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:50,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 138 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:50,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2789 states. [2022-01-28 14:35:50,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2789 to 1466. [2022-01-28 14:35:50,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1466 states, 1465 states have (on average 3.9856655290102387) internal successors, (5839), 1465 states have internal predecessors, (5839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:50,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 5839 transitions. [2022-01-28 14:35:50,870 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 5839 transitions. Word has length 25 [2022-01-28 14:35:50,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:50,870 INFO L470 AbstractCegarLoop]: Abstraction has 1466 states and 5839 transitions. [2022-01-28 14:35:50,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:50,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 5839 transitions. [2022-01-28 14:35:50,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:50,873 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:50,873 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:50,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-01-28 14:35:50,873 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:50,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:50,873 INFO L85 PathProgramCache]: Analyzing trace with hash -43623785, now seen corresponding path program 67 times [2022-01-28 14:35:50,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:50,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659687143] [2022-01-28 14:35:50,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:50,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:50,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:50,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:50,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659687143] [2022-01-28 14:35:50,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659687143] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:50,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:50,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:50,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756585264] [2022-01-28 14:35:50,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:50,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:50,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:50,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:50,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:50,989 INFO L87 Difference]: Start difference. First operand 1466 states and 5839 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:51,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:51,103 INFO L93 Difference]: Finished difference Result 3147 states and 11741 transitions. [2022-01-28 14:35:51,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:51,103 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:51,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:51,118 INFO L225 Difference]: With dead ends: 3147 [2022-01-28 14:35:51,118 INFO L226 Difference]: Without dead ends: 2960 [2022-01-28 14:35:51,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:51,119 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 102 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:51,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 154 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:51,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2960 states. [2022-01-28 14:35:51,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2960 to 1516. [2022-01-28 14:35:51,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1516 states, 1515 states have (on average 3.9788778877887787) internal successors, (6028), 1515 states have internal predecessors, (6028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:51,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 6028 transitions. [2022-01-28 14:35:51,159 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 6028 transitions. Word has length 25 [2022-01-28 14:35:51,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:51,159 INFO L470 AbstractCegarLoop]: Abstraction has 1516 states and 6028 transitions. [2022-01-28 14:35:51,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:51,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 6028 transitions. [2022-01-28 14:35:51,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:51,162 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:51,162 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:51,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-01-28 14:35:51,162 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:51,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:51,162 INFO L85 PathProgramCache]: Analyzing trace with hash -2086960779, now seen corresponding path program 68 times [2022-01-28 14:35:51,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:51,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810735595] [2022-01-28 14:35:51,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:51,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:51,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:51,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:51,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810735595] [2022-01-28 14:35:51,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810735595] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:51,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:51,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:51,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152629082] [2022-01-28 14:35:51,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:51,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:51,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:51,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:51,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:51,315 INFO L87 Difference]: Start difference. First operand 1516 states and 6028 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:51,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:51,442 INFO L93 Difference]: Finished difference Result 3143 states and 11701 transitions. [2022-01-28 14:35:51,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:51,442 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:51,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:51,454 INFO L225 Difference]: With dead ends: 3143 [2022-01-28 14:35:51,455 INFO L226 Difference]: Without dead ends: 2932 [2022-01-28 14:35:51,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:51,455 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 94 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:51,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 159 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:51,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2022-01-28 14:35:51,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 1488. [2022-01-28 14:35:51,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1487 states have (on average 3.985205110961668) internal successors, (5926), 1487 states have internal predecessors, (5926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:51,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 5926 transitions. [2022-01-28 14:35:51,495 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 5926 transitions. Word has length 25 [2022-01-28 14:35:51,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:51,495 INFO L470 AbstractCegarLoop]: Abstraction has 1488 states and 5926 transitions. [2022-01-28 14:35:51,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:51,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 5926 transitions. [2022-01-28 14:35:51,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:51,498 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:51,498 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:51,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-01-28 14:35:51,498 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:51,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:51,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1161025397, now seen corresponding path program 69 times [2022-01-28 14:35:51,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:51,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500147250] [2022-01-28 14:35:51,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:51,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:51,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:51,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:51,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500147250] [2022-01-28 14:35:51,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500147250] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:51,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:51,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:51,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347700007] [2022-01-28 14:35:51,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:51,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:51,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:51,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:51,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:51,622 INFO L87 Difference]: Start difference. First operand 1488 states and 5926 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:51,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:51,777 INFO L93 Difference]: Finished difference Result 3204 states and 11929 transitions. [2022-01-28 14:35:51,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:51,777 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:51,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:51,786 INFO L225 Difference]: With dead ends: 3204 [2022-01-28 14:35:51,786 INFO L226 Difference]: Without dead ends: 3017 [2022-01-28 14:35:51,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:51,786 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 114 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:51,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 144 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:51,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3017 states. [2022-01-28 14:35:51,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3017 to 1534. [2022-01-28 14:35:51,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1534 states, 1533 states have (on average 3.9680365296803655) internal successors, (6083), 1533 states have internal predecessors, (6083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:51,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1534 states to 1534 states and 6083 transitions. [2022-01-28 14:35:51,821 INFO L78 Accepts]: Start accepts. Automaton has 1534 states and 6083 transitions. Word has length 25 [2022-01-28 14:35:51,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:51,821 INFO L470 AbstractCegarLoop]: Abstraction has 1534 states and 6083 transitions. [2022-01-28 14:35:51,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:51,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1534 states and 6083 transitions. [2022-01-28 14:35:51,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:51,823 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:51,823 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:51,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-01-28 14:35:51,823 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:51,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:51,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1241915253, now seen corresponding path program 70 times [2022-01-28 14:35:51,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:51,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211603448] [2022-01-28 14:35:51,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:51,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:51,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:51,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:51,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:51,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211603448] [2022-01-28 14:35:51,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211603448] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:51,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:51,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:51,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853672479] [2022-01-28 14:35:51,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:51,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:51,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:51,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:51,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:51,991 INFO L87 Difference]: Start difference. First operand 1534 states and 6083 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:52,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:52,125 INFO L93 Difference]: Finished difference Result 3239 states and 12018 transitions. [2022-01-28 14:35:52,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:52,125 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:52,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:52,132 INFO L225 Difference]: With dead ends: 3239 [2022-01-28 14:35:52,132 INFO L226 Difference]: Without dead ends: 2971 [2022-01-28 14:35:52,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:52,132 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 104 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:52,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 145 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:52,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2022-01-28 14:35:52,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 1488. [2022-01-28 14:35:52,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1487 states have (on average 3.9704102219233355) internal successors, (5904), 1487 states have internal predecessors, (5904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:52,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 5904 transitions. [2022-01-28 14:35:52,160 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 5904 transitions. Word has length 25 [2022-01-28 14:35:52,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:52,160 INFO L470 AbstractCegarLoop]: Abstraction has 1488 states and 5904 transitions. [2022-01-28 14:35:52,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:52,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 5904 transitions. [2022-01-28 14:35:52,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:52,163 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:52,163 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:52,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-01-28 14:35:52,163 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:52,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:52,163 INFO L85 PathProgramCache]: Analyzing trace with hash 2143373011, now seen corresponding path program 71 times [2022-01-28 14:35:52,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:52,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854719296] [2022-01-28 14:35:52,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:52,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:52,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:52,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:52,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:52,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854719296] [2022-01-28 14:35:52,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854719296] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:52,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:52,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:52,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308196465] [2022-01-28 14:35:52,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:52,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:52,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:52,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:52,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:52,286 INFO L87 Difference]: Start difference. First operand 1488 states and 5904 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:52,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:52,414 INFO L93 Difference]: Finished difference Result 3194 states and 11876 transitions. [2022-01-28 14:35:52,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:52,414 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:52,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:52,421 INFO L225 Difference]: With dead ends: 3194 [2022-01-28 14:35:52,421 INFO L226 Difference]: Without dead ends: 3011 [2022-01-28 14:35:52,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:52,421 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 93 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:52,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 175 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:52,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3011 states. [2022-01-28 14:35:52,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3011 to 1532. [2022-01-28 14:35:52,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1532 states, 1531 states have (on average 3.955584585238406) internal successors, (6056), 1531 states have internal predecessors, (6056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:52,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1532 states to 1532 states and 6056 transitions. [2022-01-28 14:35:52,450 INFO L78 Accepts]: Start accepts. Automaton has 1532 states and 6056 transitions. Word has length 25 [2022-01-28 14:35:52,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:52,450 INFO L470 AbstractCegarLoop]: Abstraction has 1532 states and 6056 transitions. [2022-01-28 14:35:52,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:52,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1532 states and 6056 transitions. [2022-01-28 14:35:52,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:52,452 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:52,452 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:52,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-01-28 14:35:52,452 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:52,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:52,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1073854005, now seen corresponding path program 72 times [2022-01-28 14:35:52,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:52,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018533135] [2022-01-28 14:35:52,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:52,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:52,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:52,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:52,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018533135] [2022-01-28 14:35:52,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018533135] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:52,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:52,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:52,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609115778] [2022-01-28 14:35:52,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:52,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:52,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:52,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:52,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:52,569 INFO L87 Difference]: Start difference. First operand 1532 states and 6056 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:52,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:52,666 INFO L93 Difference]: Finished difference Result 3233 states and 11979 transitions. [2022-01-28 14:35:52,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:52,666 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:52,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:52,673 INFO L225 Difference]: With dead ends: 3233 [2022-01-28 14:35:52,673 INFO L226 Difference]: Without dead ends: 2937 [2022-01-28 14:35:52,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:52,673 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 100 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:52,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 154 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:52,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2022-01-28 14:35:52,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 1458. [2022-01-28 14:35:52,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 1457 states have (on average 3.9910775566231984) internal successors, (5815), 1457 states have internal predecessors, (5815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:52,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 5815 transitions. [2022-01-28 14:35:52,706 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 5815 transitions. Word has length 25 [2022-01-28 14:35:52,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:52,706 INFO L470 AbstractCegarLoop]: Abstraction has 1458 states and 5815 transitions. [2022-01-28 14:35:52,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:52,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 5815 transitions. [2022-01-28 14:35:52,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:52,708 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:52,708 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:52,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-01-28 14:35:52,709 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:52,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:52,709 INFO L85 PathProgramCache]: Analyzing trace with hash 442501743, now seen corresponding path program 73 times [2022-01-28 14:35:52,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:52,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929143721] [2022-01-28 14:35:52,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:52,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:52,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:52,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:52,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:52,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929143721] [2022-01-28 14:35:52,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929143721] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:52,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:52,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:52,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323554538] [2022-01-28 14:35:52,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:52,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:52,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:52,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:52,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:52,827 INFO L87 Difference]: Start difference. First operand 1458 states and 5815 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:52,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:52,931 INFO L93 Difference]: Finished difference Result 2849 states and 10577 transitions. [2022-01-28 14:35:52,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:52,931 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:52,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:52,937 INFO L225 Difference]: With dead ends: 2849 [2022-01-28 14:35:52,937 INFO L226 Difference]: Without dead ends: 2690 [2022-01-28 14:35:52,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:52,937 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 105 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:52,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 164 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:52,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2690 states. [2022-01-28 14:35:52,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2690 to 1486. [2022-01-28 14:35:52,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1485 states have (on average 3.985858585858586) internal successors, (5919), 1485 states have internal predecessors, (5919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:52,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5919 transitions. [2022-01-28 14:35:52,964 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5919 transitions. Word has length 25 [2022-01-28 14:35:52,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:52,964 INFO L470 AbstractCegarLoop]: Abstraction has 1486 states and 5919 transitions. [2022-01-28 14:35:52,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:52,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5919 transitions. [2022-01-28 14:35:52,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:52,966 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:52,966 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:52,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-01-28 14:35:52,966 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:52,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:52,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1147433007, now seen corresponding path program 74 times [2022-01-28 14:35:52,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:52,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189642280] [2022-01-28 14:35:52,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:52,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:52,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:53,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:53,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:53,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189642280] [2022-01-28 14:35:53,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189642280] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:53,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:53,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:53,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850816813] [2022-01-28 14:35:53,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:53,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:53,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:53,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:53,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:53,086 INFO L87 Difference]: Start difference. First operand 1486 states and 5919 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:53,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:53,215 INFO L93 Difference]: Finished difference Result 2879 states and 10670 transitions. [2022-01-28 14:35:53,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:53,215 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:53,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:53,221 INFO L225 Difference]: With dead ends: 2879 [2022-01-28 14:35:53,221 INFO L226 Difference]: Without dead ends: 2674 [2022-01-28 14:35:53,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:53,221 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 86 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:53,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 201 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:53,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2022-01-28 14:35:53,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 1470. [2022-01-28 14:35:53,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1469 states have (on average 3.9911504424778763) internal successors, (5863), 1469 states have internal predecessors, (5863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:53,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 5863 transitions. [2022-01-28 14:35:53,248 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 5863 transitions. Word has length 25 [2022-01-28 14:35:53,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:53,248 INFO L470 AbstractCegarLoop]: Abstraction has 1470 states and 5863 transitions. [2022-01-28 14:35:53,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:53,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 5863 transitions. [2022-01-28 14:35:53,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:53,250 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:53,251 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:53,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-01-28 14:35:53,251 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:53,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:53,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1523564369, now seen corresponding path program 75 times [2022-01-28 14:35:53,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:53,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623693798] [2022-01-28 14:35:53,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:53,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:53,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:53,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:53,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:53,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623693798] [2022-01-28 14:35:53,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623693798] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:53,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:53,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:53,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347127777] [2022-01-28 14:35:53,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:53,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:53,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:53,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:53,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:53,389 INFO L87 Difference]: Start difference. First operand 1470 states and 5863 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:53,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:53,463 INFO L93 Difference]: Finished difference Result 2847 states and 10564 transitions. [2022-01-28 14:35:53,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:53,463 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:53,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:53,469 INFO L225 Difference]: With dead ends: 2847 [2022-01-28 14:35:53,470 INFO L226 Difference]: Without dead ends: 2688 [2022-01-28 14:35:53,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:53,470 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 108 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:53,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 152 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:53,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2688 states. [2022-01-28 14:35:53,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2688 to 1486. [2022-01-28 14:35:53,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1485 states have (on average 3.9804713804713803) internal successors, (5911), 1485 states have internal predecessors, (5911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:53,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5911 transitions. [2022-01-28 14:35:53,500 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5911 transitions. Word has length 25 [2022-01-28 14:35:53,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:53,500 INFO L470 AbstractCegarLoop]: Abstraction has 1486 states and 5911 transitions. [2022-01-28 14:35:53,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:53,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5911 transitions. [2022-01-28 14:35:53,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:53,502 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:53,502 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:53,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-01-28 14:35:53,503 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:53,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:53,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1763104943, now seen corresponding path program 76 times [2022-01-28 14:35:53,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:53,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180156904] [2022-01-28 14:35:53,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:53,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:53,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:53,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:53,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:53,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180156904] [2022-01-28 14:35:53,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180156904] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:53,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:53,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:53,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27468822] [2022-01-28 14:35:53,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:53,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:53,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:53,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:53,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:53,626 INFO L87 Difference]: Start difference. First operand 1486 states and 5911 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:53,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:53,736 INFO L93 Difference]: Finished difference Result 2875 states and 10652 transitions. [2022-01-28 14:35:53,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:53,736 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:53,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:53,742 INFO L225 Difference]: With dead ends: 2875 [2022-01-28 14:35:53,742 INFO L226 Difference]: Without dead ends: 2672 [2022-01-28 14:35:53,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:53,742 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 91 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:53,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 184 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:53,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2672 states. [2022-01-28 14:35:53,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2672 to 1470. [2022-01-28 14:35:53,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1469 states have (on average 3.9857045609257997) internal successors, (5855), 1469 states have internal predecessors, (5855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:53,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 5855 transitions. [2022-01-28 14:35:53,773 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 5855 transitions. Word has length 25 [2022-01-28 14:35:53,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:53,774 INFO L470 AbstractCegarLoop]: Abstraction has 1470 states and 5855 transitions. [2022-01-28 14:35:53,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:53,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 5855 transitions. [2022-01-28 14:35:53,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:53,776 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:53,776 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:53,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-01-28 14:35:53,776 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:53,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:53,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1354240973, now seen corresponding path program 77 times [2022-01-28 14:35:53,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:53,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483120024] [2022-01-28 14:35:53,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:53,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:53,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:53,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:53,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:53,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483120024] [2022-01-28 14:35:53,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483120024] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:53,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:53,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:53,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537311900] [2022-01-28 14:35:53,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:53,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:53,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:53,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:53,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:53,893 INFO L87 Difference]: Start difference. First operand 1470 states and 5855 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:53,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:53,973 INFO L93 Difference]: Finished difference Result 2921 states and 10833 transitions. [2022-01-28 14:35:53,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:53,973 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:53,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:53,978 INFO L225 Difference]: With dead ends: 2921 [2022-01-28 14:35:53,979 INFO L226 Difference]: Without dead ends: 2732 [2022-01-28 14:35:53,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:53,979 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 110 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:53,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 146 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:35:53,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2022-01-28 14:35:54,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 1500. [2022-01-28 14:35:54,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1500 states, 1499 states have (on average 3.9679786524349567) internal successors, (5948), 1499 states have internal predecessors, (5948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:54,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 5948 transitions. [2022-01-28 14:35:54,006 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 5948 transitions. Word has length 25 [2022-01-28 14:35:54,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:54,006 INFO L470 AbstractCegarLoop]: Abstraction has 1500 states and 5948 transitions. [2022-01-28 14:35:54,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:54,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 5948 transitions. [2022-01-28 14:35:54,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:54,008 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:54,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:54,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-01-28 14:35:54,009 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:54,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:54,009 INFO L85 PathProgramCache]: Analyzing trace with hash 897389329, now seen corresponding path program 78 times [2022-01-28 14:35:54,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:54,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704278494] [2022-01-28 14:35:54,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:54,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:54,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:54,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:54,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:54,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704278494] [2022-01-28 14:35:54,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704278494] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:54,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:54,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:54,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799289885] [2022-01-28 14:35:54,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:54,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:54,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:54,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:54,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:54,134 INFO L87 Difference]: Start difference. First operand 1500 states and 5948 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:54,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:54,284 INFO L93 Difference]: Finished difference Result 2919 states and 10798 transitions. [2022-01-28 14:35:54,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:54,284 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:54,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:54,291 INFO L225 Difference]: With dead ends: 2919 [2022-01-28 14:35:54,291 INFO L226 Difference]: Without dead ends: 2694 [2022-01-28 14:35:54,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:54,291 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 102 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:54,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 146 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:54,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2694 states. [2022-01-28 14:35:54,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2694 to 1462. [2022-01-28 14:35:54,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1462 states, 1461 states have (on average 3.9911019849418206) internal successors, (5831), 1461 states have internal predecessors, (5831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:54,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 5831 transitions. [2022-01-28 14:35:54,318 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 5831 transitions. Word has length 25 [2022-01-28 14:35:54,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:54,318 INFO L470 AbstractCegarLoop]: Abstraction has 1462 states and 5831 transitions. [2022-01-28 14:35:54,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:54,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 5831 transitions. [2022-01-28 14:35:54,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:54,320 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:54,320 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:54,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-01-28 14:35:54,321 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:54,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:54,321 INFO L85 PathProgramCache]: Analyzing trace with hash -38400303, now seen corresponding path program 79 times [2022-01-28 14:35:54,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:54,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338524769] [2022-01-28 14:35:54,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:54,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:54,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:54,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:54,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338524769] [2022-01-28 14:35:54,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338524769] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:54,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:54,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:54,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297859205] [2022-01-28 14:35:54,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:54,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:54,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:54,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:54,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:54,449 INFO L87 Difference]: Start difference. First operand 1462 states and 5831 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:54,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:54,564 INFO L93 Difference]: Finished difference Result 2843 states and 10554 transitions. [2022-01-28 14:35:54,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:54,564 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:54,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:54,570 INFO L225 Difference]: With dead ends: 2843 [2022-01-28 14:35:54,570 INFO L226 Difference]: Without dead ends: 2684 [2022-01-28 14:35:54,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:54,570 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 105 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:54,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 152 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:54,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2684 states. [2022-01-28 14:35:54,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2684 to 1486. [2022-01-28 14:35:54,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1485 states have (on average 3.983164983164983) internal successors, (5915), 1485 states have internal predecessors, (5915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:54,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5915 transitions. [2022-01-28 14:35:54,597 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5915 transitions. Word has length 25 [2022-01-28 14:35:54,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:54,597 INFO L470 AbstractCegarLoop]: Abstraction has 1486 states and 5915 transitions. [2022-01-28 14:35:54,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:54,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5915 transitions. [2022-01-28 14:35:54,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:54,599 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:54,599 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:54,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-01-28 14:35:54,600 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:54,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:54,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1628335053, now seen corresponding path program 80 times [2022-01-28 14:35:54,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:54,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39934007] [2022-01-28 14:35:54,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:54,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:54,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:54,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:54,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:54,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39934007] [2022-01-28 14:35:54,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39934007] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:54,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:54,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:54,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023843060] [2022-01-28 14:35:54,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:54,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:54,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:54,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:54,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:54,727 INFO L87 Difference]: Start difference. First operand 1486 states and 5915 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:54,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:54,846 INFO L93 Difference]: Finished difference Result 2873 states and 10647 transitions. [2022-01-28 14:35:54,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:54,847 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:54,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:54,852 INFO L225 Difference]: With dead ends: 2873 [2022-01-28 14:35:54,852 INFO L226 Difference]: Without dead ends: 2668 [2022-01-28 14:35:54,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:54,853 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 100 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:54,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 163 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:54,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2668 states. [2022-01-28 14:35:54,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2668 to 1470. [2022-01-28 14:35:54,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1469 states have (on average 3.988427501701838) internal successors, (5859), 1469 states have internal predecessors, (5859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:54,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 5859 transitions. [2022-01-28 14:35:54,880 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 5859 transitions. Word has length 25 [2022-01-28 14:35:54,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:54,880 INFO L470 AbstractCegarLoop]: Abstraction has 1470 states and 5859 transitions. [2022-01-28 14:35:54,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:54,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 5859 transitions. [2022-01-28 14:35:54,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:54,882 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:54,882 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:54,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-01-28 14:35:54,882 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:54,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:54,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1726646575, now seen corresponding path program 81 times [2022-01-28 14:35:54,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:54,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701656726] [2022-01-28 14:35:54,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:54,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:54,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:54,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:54,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:54,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701656726] [2022-01-28 14:35:54,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701656726] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:54,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:54,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:54,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343917559] [2022-01-28 14:35:54,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:54,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:54,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:54,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:54,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:54,991 INFO L87 Difference]: Start difference. First operand 1470 states and 5859 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:55,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:55,122 INFO L93 Difference]: Finished difference Result 2837 states and 10529 transitions. [2022-01-28 14:35:55,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:55,123 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:55,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:55,130 INFO L225 Difference]: With dead ends: 2837 [2022-01-28 14:35:55,130 INFO L226 Difference]: Without dead ends: 2678 [2022-01-28 14:35:55,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:55,132 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 111 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:55,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 147 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:55,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2678 states. [2022-01-28 14:35:55,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2678 to 1486. [2022-01-28 14:35:55,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1485 states have (on average 3.977777777777778) internal successors, (5907), 1485 states have internal predecessors, (5907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:55,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5907 transitions. [2022-01-28 14:35:55,162 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5907 transitions. Word has length 25 [2022-01-28 14:35:55,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:55,163 INFO L470 AbstractCegarLoop]: Abstraction has 1486 states and 5907 transitions. [2022-01-28 14:35:55,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:55,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5907 transitions. [2022-01-28 14:35:55,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:55,165 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:55,165 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:55,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-01-28 14:35:55,165 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:55,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:55,166 INFO L85 PathProgramCache]: Analyzing trace with hash -46149935, now seen corresponding path program 82 times [2022-01-28 14:35:55,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:55,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253716291] [2022-01-28 14:35:55,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:55,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:55,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:55,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:55,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:55,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253716291] [2022-01-28 14:35:55,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253716291] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:55,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:55,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:55,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919201807] [2022-01-28 14:35:55,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:55,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:55,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:55,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:55,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:55,347 INFO L87 Difference]: Start difference. First operand 1486 states and 5907 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:55,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:55,433 INFO L93 Difference]: Finished difference Result 2861 states and 10605 transitions. [2022-01-28 14:35:55,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:55,433 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:55,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:55,439 INFO L225 Difference]: With dead ends: 2861 [2022-01-28 14:35:55,440 INFO L226 Difference]: Without dead ends: 2662 [2022-01-28 14:35:55,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:55,440 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 95 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:55,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 153 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:55,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2662 states. [2022-01-28 14:35:55,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2662 to 1470. [2022-01-28 14:35:55,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1469 states have (on average 3.982981620149762) internal successors, (5851), 1469 states have internal predecessors, (5851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:55,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 5851 transitions. [2022-01-28 14:35:55,483 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 5851 transitions. Word has length 25 [2022-01-28 14:35:55,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:55,483 INFO L470 AbstractCegarLoop]: Abstraction has 1470 states and 5851 transitions. [2022-01-28 14:35:55,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:55,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 5851 transitions. [2022-01-28 14:35:55,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:55,486 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:55,486 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:55,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-01-28 14:35:55,486 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:55,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:55,486 INFO L85 PathProgramCache]: Analyzing trace with hash -309484621, now seen corresponding path program 83 times [2022-01-28 14:35:55,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:55,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311412199] [2022-01-28 14:35:55,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:55,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:55,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:55,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:55,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311412199] [2022-01-28 14:35:55,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311412199] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:55,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:55,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:55,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144226228] [2022-01-28 14:35:55,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:55,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:55,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:55,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:55,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:55,568 INFO L87 Difference]: Start difference. First operand 1470 states and 5851 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:55,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:55,647 INFO L93 Difference]: Finished difference Result 2909 states and 10791 transitions. [2022-01-28 14:35:55,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:55,647 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:55,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:55,654 INFO L225 Difference]: With dead ends: 2909 [2022-01-28 14:35:55,654 INFO L226 Difference]: Without dead ends: 2720 [2022-01-28 14:35:55,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:55,655 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 106 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:55,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 144 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:35:55,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2720 states. [2022-01-28 14:35:55,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2720 to 1498. [2022-01-28 14:35:55,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 1497 states have (on average 3.967267869071476) internal successors, (5939), 1497 states have internal predecessors, (5939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:55,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 5939 transitions. [2022-01-28 14:35:55,688 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 5939 transitions. Word has length 25 [2022-01-28 14:35:55,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:55,688 INFO L470 AbstractCegarLoop]: Abstraction has 1498 states and 5939 transitions. [2022-01-28 14:35:55,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:55,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 5939 transitions. [2022-01-28 14:35:55,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:55,691 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:55,691 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:55,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-01-28 14:35:55,691 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:55,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:55,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1701629167, now seen corresponding path program 84 times [2022-01-28 14:35:55,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:55,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770810366] [2022-01-28 14:35:55,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:55,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:55,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:55,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:55,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:55,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770810366] [2022-01-28 14:35:55,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770810366] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:55,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:55,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:55,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865608605] [2022-01-28 14:35:55,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:55,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:55,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:55,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:55,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:55,836 INFO L87 Difference]: Start difference. First operand 1498 states and 5939 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:55,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:55,964 INFO L93 Difference]: Finished difference Result 2903 states and 10746 transitions. [2022-01-28 14:35:55,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:55,965 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:55,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:55,971 INFO L225 Difference]: With dead ends: 2903 [2022-01-28 14:35:55,971 INFO L226 Difference]: Without dead ends: 2684 [2022-01-28 14:35:55,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:55,972 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 94 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:55,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 170 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:55,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2684 states. [2022-01-28 14:35:55,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2684 to 1462. [2022-01-28 14:35:56,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1462 states, 1461 states have (on average 3.9883641341546885) internal successors, (5827), 1461 states have internal predecessors, (5827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:56,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 5827 transitions. [2022-01-28 14:35:56,004 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 5827 transitions. Word has length 25 [2022-01-28 14:35:56,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:56,004 INFO L470 AbstractCegarLoop]: Abstraction has 1462 states and 5827 transitions. [2022-01-28 14:35:56,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:56,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 5827 transitions. [2022-01-28 14:35:56,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:56,007 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:56,007 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:56,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-01-28 14:35:56,007 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:56,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:56,007 INFO L85 PathProgramCache]: Analyzing trace with hash 349604659, now seen corresponding path program 85 times [2022-01-28 14:35:56,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:56,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837350205] [2022-01-28 14:35:56,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:56,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:56,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:56,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:56,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:56,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837350205] [2022-01-28 14:35:56,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837350205] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:56,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:56,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:56,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575519430] [2022-01-28 14:35:56,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:56,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:56,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:56,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:56,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:56,135 INFO L87 Difference]: Start difference. First operand 1462 states and 5827 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:56,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:56,247 INFO L93 Difference]: Finished difference Result 2839 states and 10540 transitions. [2022-01-28 14:35:56,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:56,248 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:56,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:56,254 INFO L225 Difference]: With dead ends: 2839 [2022-01-28 14:35:56,254 INFO L226 Difference]: Without dead ends: 2680 [2022-01-28 14:35:56,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:56,255 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 99 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:56,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 169 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:56,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2680 states. [2022-01-28 14:35:56,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2680 to 1486. [2022-01-28 14:35:56,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1485 states have (on average 3.9804713804713803) internal successors, (5911), 1485 states have internal predecessors, (5911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:56,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5911 transitions. [2022-01-28 14:35:56,285 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5911 transitions. Word has length 25 [2022-01-28 14:35:56,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:56,285 INFO L470 AbstractCegarLoop]: Abstraction has 1486 states and 5911 transitions. [2022-01-28 14:35:56,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:56,286 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5911 transitions. [2022-01-28 14:35:56,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:56,288 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:56,288 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:56,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-01-28 14:35:56,288 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:56,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:56,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1357902643, now seen corresponding path program 86 times [2022-01-28 14:35:56,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:56,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180890249] [2022-01-28 14:35:56,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:56,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:56,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:56,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:56,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:56,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180890249] [2022-01-28 14:35:56,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180890249] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:56,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:56,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:56,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683241962] [2022-01-28 14:35:56,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:56,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:56,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:56,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:56,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:56,421 INFO L87 Difference]: Start difference. First operand 1486 states and 5911 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:56,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:56,549 INFO L93 Difference]: Finished difference Result 2867 states and 10628 transitions. [2022-01-28 14:35:56,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:56,549 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:56,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:56,555 INFO L225 Difference]: With dead ends: 2867 [2022-01-28 14:35:56,555 INFO L226 Difference]: Without dead ends: 2664 [2022-01-28 14:35:56,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:56,556 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 91 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:56,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 177 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:56,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2022-01-28 14:35:56,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 1470. [2022-01-28 14:35:56,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1469 states have (on average 3.9857045609257997) internal successors, (5855), 1469 states have internal predecessors, (5855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:56,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 5855 transitions. [2022-01-28 14:35:56,585 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 5855 transitions. Word has length 25 [2022-01-28 14:35:56,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:56,585 INFO L470 AbstractCegarLoop]: Abstraction has 1470 states and 5855 transitions. [2022-01-28 14:35:56,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:56,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 5855 transitions. [2022-01-28 14:35:56,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:56,588 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:56,588 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:56,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-01-28 14:35:56,588 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:56,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:56,588 INFO L85 PathProgramCache]: Analyzing trace with hash -497192303, now seen corresponding path program 87 times [2022-01-28 14:35:56,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:56,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2218139] [2022-01-28 14:35:56,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:56,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:56,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:56,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:56,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:56,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2218139] [2022-01-28 14:35:56,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2218139] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:56,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:56,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:56,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910781366] [2022-01-28 14:35:56,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:56,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:56,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:56,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:56,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:56,716 INFO L87 Difference]: Start difference. First operand 1470 states and 5855 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:56,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:56,815 INFO L93 Difference]: Finished difference Result 2835 states and 10520 transitions. [2022-01-28 14:35:56,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:56,815 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:56,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:56,821 INFO L225 Difference]: With dead ends: 2835 [2022-01-28 14:35:56,822 INFO L226 Difference]: Without dead ends: 2676 [2022-01-28 14:35:56,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:56,823 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 111 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:56,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 146 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:56,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2676 states. [2022-01-28 14:35:56,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2676 to 1486. [2022-01-28 14:35:56,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1485 states have (on average 3.975084175084175) internal successors, (5903), 1485 states have internal predecessors, (5903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:56,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5903 transitions. [2022-01-28 14:35:56,853 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5903 transitions. Word has length 25 [2022-01-28 14:35:56,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:56,853 INFO L470 AbstractCegarLoop]: Abstraction has 1486 states and 5903 transitions. [2022-01-28 14:35:56,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:56,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5903 transitions. [2022-01-28 14:35:56,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:56,855 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:56,856 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:56,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-01-28 14:35:56,856 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:56,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:56,856 INFO L85 PathProgramCache]: Analyzing trace with hash -527051981, now seen corresponding path program 88 times [2022-01-28 14:35:56,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:56,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820373676] [2022-01-28 14:35:56,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:56,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:56,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:56,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:56,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820373676] [2022-01-28 14:35:56,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820373676] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:56,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:56,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:56,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963939462] [2022-01-28 14:35:56,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:56,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:56,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:56,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:56,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:56,977 INFO L87 Difference]: Start difference. First operand 1486 states and 5903 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:57,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:57,083 INFO L93 Difference]: Finished difference Result 2859 states and 10596 transitions. [2022-01-28 14:35:57,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:57,083 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:57,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:57,090 INFO L225 Difference]: With dead ends: 2859 [2022-01-28 14:35:57,090 INFO L226 Difference]: Without dead ends: 2660 [2022-01-28 14:35:57,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:57,090 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 100 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:57,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 160 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:57,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2660 states. [2022-01-28 14:35:57,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2660 to 1470. [2022-01-28 14:35:57,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1469 states have (on average 3.9802586793737236) internal successors, (5847), 1469 states have internal predecessors, (5847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:57,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 5847 transitions. [2022-01-28 14:35:57,153 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 5847 transitions. Word has length 25 [2022-01-28 14:35:57,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:57,153 INFO L470 AbstractCegarLoop]: Abstraction has 1470 states and 5847 transitions. [2022-01-28 14:35:57,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:57,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 5847 transitions. [2022-01-28 14:35:57,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:57,156 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:57,156 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:57,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-01-28 14:35:57,156 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:57,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:57,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1407470387, now seen corresponding path program 89 times [2022-01-28 14:35:57,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:57,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39334046] [2022-01-28 14:35:57,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:57,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:57,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:57,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:57,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:57,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39334046] [2022-01-28 14:35:57,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39334046] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:57,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:57,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:57,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343400483] [2022-01-28 14:35:57,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:57,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:57,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:57,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:57,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:57,258 INFO L87 Difference]: Start difference. First operand 1470 states and 5847 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:57,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:57,394 INFO L93 Difference]: Finished difference Result 2903 states and 10772 transitions. [2022-01-28 14:35:57,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:57,394 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:57,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:57,401 INFO L225 Difference]: With dead ends: 2903 [2022-01-28 14:35:57,401 INFO L226 Difference]: Without dead ends: 2716 [2022-01-28 14:35:57,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:57,402 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 95 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:57,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 162 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:57,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2716 states. [2022-01-28 14:35:57,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2716 to 1498. [2022-01-28 14:35:57,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 1497 states have (on average 3.9645958583834333) internal successors, (5935), 1497 states have internal predecessors, (5935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:57,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 5935 transitions. [2022-01-28 14:35:57,436 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 5935 transitions. Word has length 25 [2022-01-28 14:35:57,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:57,436 INFO L470 AbstractCegarLoop]: Abstraction has 1498 states and 5935 transitions. [2022-01-28 14:35:57,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:57,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 5935 transitions. [2022-01-28 14:35:57,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:57,439 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:57,439 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:57,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-01-28 14:35:57,439 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:57,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:57,439 INFO L85 PathProgramCache]: Analyzing trace with hash -635866607, now seen corresponding path program 90 times [2022-01-28 14:35:57,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:57,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902835416] [2022-01-28 14:35:57,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:57,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:57,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:57,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:57,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902835416] [2022-01-28 14:35:57,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902835416] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:57,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:57,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:57,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074210833] [2022-01-28 14:35:57,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:57,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:57,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:57,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:57,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:57,557 INFO L87 Difference]: Start difference. First operand 1498 states and 5935 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:57,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:57,647 INFO L93 Difference]: Finished difference Result 2899 states and 10732 transitions. [2022-01-28 14:35:57,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:57,647 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:57,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:57,654 INFO L225 Difference]: With dead ends: 2899 [2022-01-28 14:35:57,654 INFO L226 Difference]: Without dead ends: 2680 [2022-01-28 14:35:57,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:57,654 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 99 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:57,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 151 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:57,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2680 states. [2022-01-28 14:35:57,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2680 to 1462. [2022-01-28 14:35:57,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1462 states, 1461 states have (on average 3.9856262833675564) internal successors, (5823), 1461 states have internal predecessors, (5823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:57,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 5823 transitions. [2022-01-28 14:35:57,685 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 5823 transitions. Word has length 25 [2022-01-28 14:35:57,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:57,685 INFO L470 AbstractCegarLoop]: Abstraction has 1462 states and 5823 transitions. [2022-01-28 14:35:57,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:57,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 5823 transitions. [2022-01-28 14:35:57,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:57,687 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:57,687 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:57,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-01-28 14:35:57,688 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:57,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:57,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1073708949, now seen corresponding path program 91 times [2022-01-28 14:35:57,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:57,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104144639] [2022-01-28 14:35:57,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:57,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:57,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:57,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:57,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:57,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104144639] [2022-01-28 14:35:57,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104144639] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:57,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:57,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:57,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898260936] [2022-01-28 14:35:57,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:57,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:57,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:57,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:57,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:57,794 INFO L87 Difference]: Start difference. First operand 1462 states and 5823 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:57,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:57,917 INFO L93 Difference]: Finished difference Result 2975 states and 11062 transitions. [2022-01-28 14:35:57,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:57,917 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:57,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:57,924 INFO L225 Difference]: With dead ends: 2975 [2022-01-28 14:35:57,924 INFO L226 Difference]: Without dead ends: 2786 [2022-01-28 14:35:57,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:57,925 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 94 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:57,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 156 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:57,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2022-01-28 14:35:57,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 1506. [2022-01-28 14:35:57,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 3.9740863787375416) internal successors, (5981), 1505 states have internal predecessors, (5981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:57,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 5981 transitions. [2022-01-28 14:35:57,956 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 5981 transitions. Word has length 25 [2022-01-28 14:35:57,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:57,956 INFO L470 AbstractCegarLoop]: Abstraction has 1506 states and 5981 transitions. [2022-01-28 14:35:57,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:57,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 5981 transitions. [2022-01-28 14:35:57,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:57,959 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:57,960 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:57,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-01-28 14:35:57,960 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:57,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:57,960 INFO L85 PathProgramCache]: Analyzing trace with hash -969628045, now seen corresponding path program 92 times [2022-01-28 14:35:57,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:57,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263322276] [2022-01-28 14:35:57,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:57,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:57,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:58,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:58,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:58,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263322276] [2022-01-28 14:35:58,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263322276] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:58,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:58,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:58,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643553179] [2022-01-28 14:35:58,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:58,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:58,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:58,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:58,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:58,087 INFO L87 Difference]: Start difference. First operand 1506 states and 5981 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:58,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:58,204 INFO L93 Difference]: Finished difference Result 2973 states and 11027 transitions. [2022-01-28 14:35:58,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:58,204 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:58,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:58,211 INFO L225 Difference]: With dead ends: 2973 [2022-01-28 14:35:58,211 INFO L226 Difference]: Without dead ends: 2756 [2022-01-28 14:35:58,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:58,212 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 101 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:58,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 156 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:58,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2022-01-28 14:35:58,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 1476. [2022-01-28 14:35:58,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1475 states have (on average 3.982372881355932) internal successors, (5874), 1475 states have internal predecessors, (5874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:58,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 5874 transitions. [2022-01-28 14:35:58,242 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 5874 transitions. Word has length 25 [2022-01-28 14:35:58,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:58,242 INFO L470 AbstractCegarLoop]: Abstraction has 1476 states and 5874 transitions. [2022-01-28 14:35:58,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:58,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 5874 transitions. [2022-01-28 14:35:58,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:58,245 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:58,245 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:58,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-01-28 14:35:58,245 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:58,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:58,245 INFO L85 PathProgramCache]: Analyzing trace with hash 226911987, now seen corresponding path program 93 times [2022-01-28 14:35:58,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:58,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381830963] [2022-01-28 14:35:58,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:58,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:58,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:58,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:58,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:58,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381830963] [2022-01-28 14:35:58,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381830963] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:58,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:58,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:58,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760819746] [2022-01-28 14:35:58,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:58,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:58,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:58,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:58,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:58,385 INFO L87 Difference]: Start difference. First operand 1476 states and 5874 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:58,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:58,504 INFO L93 Difference]: Finished difference Result 2969 states and 11029 transitions. [2022-01-28 14:35:58,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:58,505 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:58,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:58,512 INFO L225 Difference]: With dead ends: 2969 [2022-01-28 14:35:58,512 INFO L226 Difference]: Without dead ends: 2780 [2022-01-28 14:35:58,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:58,513 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 94 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:58,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 165 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:58,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2780 states. [2022-01-28 14:35:58,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2780 to 1504. [2022-01-28 14:35:58,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1504 states, 1503 states have (on average 3.9667332002661344) internal successors, (5962), 1503 states have internal predecessors, (5962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:58,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 5962 transitions. [2022-01-28 14:35:58,551 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 5962 transitions. Word has length 25 [2022-01-28 14:35:58,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:58,552 INFO L470 AbstractCegarLoop]: Abstraction has 1504 states and 5962 transitions. [2022-01-28 14:35:58,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:58,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 5962 transitions. [2022-01-28 14:35:58,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:58,554 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:58,554 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:58,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-01-28 14:35:58,555 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:58,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:58,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1419378419, now seen corresponding path program 94 times [2022-01-28 14:35:58,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:58,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693766839] [2022-01-28 14:35:58,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:58,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:58,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:58,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:58,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:58,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693766839] [2022-01-28 14:35:58,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693766839] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:58,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:58,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:58,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562574007] [2022-01-28 14:35:58,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:58,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:58,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:58,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:58,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:58,649 INFO L87 Difference]: Start difference. First operand 1504 states and 5962 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:58,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:58,742 INFO L93 Difference]: Finished difference Result 2963 states and 10984 transitions. [2022-01-28 14:35:58,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:58,743 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:58,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:58,750 INFO L225 Difference]: With dead ends: 2963 [2022-01-28 14:35:58,750 INFO L226 Difference]: Without dead ends: 2752 [2022-01-28 14:35:58,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:58,750 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 96 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:58,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 158 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:58,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2752 states. [2022-01-28 14:35:58,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2752 to 1476. [2022-01-28 14:35:58,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1475 states have (on average 3.9728813559322034) internal successors, (5860), 1475 states have internal predecessors, (5860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:58,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 5860 transitions. [2022-01-28 14:35:58,798 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 5860 transitions. Word has length 25 [2022-01-28 14:35:58,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:58,798 INFO L470 AbstractCegarLoop]: Abstraction has 1476 states and 5860 transitions. [2022-01-28 14:35:58,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:58,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 5860 transitions. [2022-01-28 14:35:58,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:58,800 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:58,800 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:58,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-01-28 14:35:58,800 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:58,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:58,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1209259601, now seen corresponding path program 95 times [2022-01-28 14:35:58,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:58,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275929354] [2022-01-28 14:35:58,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:58,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:58,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:58,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:58,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:58,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275929354] [2022-01-28 14:35:58,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275929354] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:58,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:58,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:58,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874250116] [2022-01-28 14:35:58,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:58,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:58,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:58,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:58,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:58,927 INFO L87 Difference]: Start difference. First operand 1476 states and 5860 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:59,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:59,043 INFO L93 Difference]: Finished difference Result 2965 states and 11005 transitions. [2022-01-28 14:35:59,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:59,044 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:59,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:59,050 INFO L225 Difference]: With dead ends: 2965 [2022-01-28 14:35:59,050 INFO L226 Difference]: Without dead ends: 2778 [2022-01-28 14:35:59,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:59,051 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 95 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:59,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 156 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:59,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2778 states. [2022-01-28 14:35:59,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2778 to 1504. [2022-01-28 14:35:59,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1504 states, 1503 states have (on average 3.9574184963406522) internal successors, (5948), 1503 states have internal predecessors, (5948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:59,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 5948 transitions. [2022-01-28 14:35:59,081 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 5948 transitions. Word has length 25 [2022-01-28 14:35:59,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:59,081 INFO L470 AbstractCegarLoop]: Abstraction has 1504 states and 5948 transitions. [2022-01-28 14:35:59,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:59,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 5948 transitions. [2022-01-28 14:35:59,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:59,083 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:59,083 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:59,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-01-28 14:35:59,083 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:59,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:59,083 INFO L85 PathProgramCache]: Analyzing trace with hash -2004645069, now seen corresponding path program 96 times [2022-01-28 14:35:59,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:59,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938691501] [2022-01-28 14:35:59,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:59,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:59,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:59,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:59,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:59,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938691501] [2022-01-28 14:35:59,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938691501] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:59,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:59,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:59,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674109147] [2022-01-28 14:35:59,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:59,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:59,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:59,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:59,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:59,228 INFO L87 Difference]: Start difference. First operand 1504 states and 5948 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:59,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:59,355 INFO L93 Difference]: Finished difference Result 2961 states and 10965 transitions. [2022-01-28 14:35:59,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:59,355 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:59,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:59,362 INFO L225 Difference]: With dead ends: 2961 [2022-01-28 14:35:59,362 INFO L226 Difference]: Without dead ends: 2732 [2022-01-28 14:35:59,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:59,362 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 95 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:59,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 159 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:59,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2022-01-28 14:35:59,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 1458. [2022-01-28 14:35:59,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 1457 states have (on average 3.9897048730267675) internal successors, (5813), 1457 states have internal predecessors, (5813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:59,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 5813 transitions. [2022-01-28 14:35:59,391 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 5813 transitions. Word has length 25 [2022-01-28 14:35:59,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:59,392 INFO L470 AbstractCegarLoop]: Abstraction has 1458 states and 5813 transitions. [2022-01-28 14:35:59,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:59,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 5813 transitions. [2022-01-28 14:35:59,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:59,394 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:59,394 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:59,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-01-28 14:35:59,394 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:59,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:59,394 INFO L85 PathProgramCache]: Analyzing trace with hash -894688137, now seen corresponding path program 97 times [2022-01-28 14:35:59,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:59,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145357824] [2022-01-28 14:35:59,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:59,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:59,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:59,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:59,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:59,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145357824] [2022-01-28 14:35:59,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145357824] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:59,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:59,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:59,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119406019] [2022-01-28 14:35:59,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:59,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:59,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:59,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:59,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:59,527 INFO L87 Difference]: Start difference. First operand 1458 states and 5813 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:59,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:59,644 INFO L93 Difference]: Finished difference Result 3229 states and 12055 transitions. [2022-01-28 14:35:59,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:59,645 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:59,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:59,652 INFO L225 Difference]: With dead ends: 3229 [2022-01-28 14:35:59,652 INFO L226 Difference]: Without dead ends: 3040 [2022-01-28 14:35:59,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:59,653 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 108 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:59,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 143 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:35:59,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3040 states. [2022-01-28 14:35:59,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3040 to 1525. [2022-01-28 14:35:59,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1525 states, 1524 states have (on average 3.9783464566929134) internal successors, (6063), 1524 states have internal predecessors, (6063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:59,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 6063 transitions. [2022-01-28 14:35:59,690 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 6063 transitions. Word has length 25 [2022-01-28 14:35:59,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:59,690 INFO L470 AbstractCegarLoop]: Abstraction has 1525 states and 6063 transitions. [2022-01-28 14:35:59,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:59,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 6063 transitions. [2022-01-28 14:35:59,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:59,693 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:59,693 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:59,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-01-28 14:35:59,693 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:59,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:59,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1356942165, now seen corresponding path program 98 times [2022-01-28 14:35:59,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:59,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701965016] [2022-01-28 14:35:59,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:59,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:59,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:35:59,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:35:59,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:35:59,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701965016] [2022-01-28 14:35:59,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701965016] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:35:59,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:35:59,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:35:59,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620990414] [2022-01-28 14:35:59,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:35:59,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:35:59,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:35:59,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:35:59,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:35:59,805 INFO L87 Difference]: Start difference. First operand 1525 states and 6063 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:59,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:35:59,884 INFO L93 Difference]: Finished difference Result 3227 states and 12020 transitions. [2022-01-28 14:35:59,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:35:59,884 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:35:59,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:35:59,891 INFO L225 Difference]: With dead ends: 3227 [2022-01-28 14:35:59,891 INFO L226 Difference]: Without dead ends: 3010 [2022-01-28 14:35:59,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:35:59,892 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 114 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:35:59,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 136 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:35:59,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3010 states. [2022-01-28 14:35:59,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3010 to 1495. [2022-01-28 14:35:59,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1495 states, 1494 states have (on average 3.9866131191432395) internal successors, (5956), 1494 states have internal predecessors, (5956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:59,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1495 states to 1495 states and 5956 transitions. [2022-01-28 14:35:59,925 INFO L78 Accepts]: Start accepts. Automaton has 1495 states and 5956 transitions. Word has length 25 [2022-01-28 14:35:59,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:35:59,925 INFO L470 AbstractCegarLoop]: Abstraction has 1495 states and 5956 transitions. [2022-01-28 14:35:59,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:35:59,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1495 states and 5956 transitions. [2022-01-28 14:35:59,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:35:59,927 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:35:59,927 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:35:59,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-01-28 14:35:59,927 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:35:59,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:35:59,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1741485099, now seen corresponding path program 99 times [2022-01-28 14:35:59,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:35:59,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376456337] [2022-01-28 14:35:59,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:35:59,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:35:59,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:00,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:00,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:00,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376456337] [2022-01-28 14:36:00,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376456337] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:00,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:00,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:00,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875834698] [2022-01-28 14:36:00,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:00,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:00,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:00,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:00,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:00,062 INFO L87 Difference]: Start difference. First operand 1495 states and 5956 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:00,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:00,143 INFO L93 Difference]: Finished difference Result 3223 states and 12022 transitions. [2022-01-28 14:36:00,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:00,143 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:00,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:00,150 INFO L225 Difference]: With dead ends: 3223 [2022-01-28 14:36:00,150 INFO L226 Difference]: Without dead ends: 3034 [2022-01-28 14:36:00,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:00,151 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 120 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:00,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 140 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:36:00,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3034 states. [2022-01-28 14:36:00,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3034 to 1523. [2022-01-28 14:36:00,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1522 states have (on average 3.971090670170828) internal successors, (6044), 1522 states have internal predecessors, (6044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:00,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 6044 transitions. [2022-01-28 14:36:00,184 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 6044 transitions. Word has length 25 [2022-01-28 14:36:00,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:00,184 INFO L470 AbstractCegarLoop]: Abstraction has 1523 states and 6044 transitions. [2022-01-28 14:36:00,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:00,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 6044 transitions. [2022-01-28 14:36:00,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:00,187 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:00,188 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:00,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-01-28 14:36:00,188 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:00,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:00,188 INFO L85 PathProgramCache]: Analyzing trace with hash -549018667, now seen corresponding path program 100 times [2022-01-28 14:36:00,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:00,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409246174] [2022-01-28 14:36:00,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:00,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:00,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:00,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:00,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:00,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409246174] [2022-01-28 14:36:00,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409246174] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:00,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:00,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:00,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621702522] [2022-01-28 14:36:00,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:00,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:00,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:00,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:00,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:00,290 INFO L87 Difference]: Start difference. First operand 1523 states and 6044 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:00,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:00,392 INFO L93 Difference]: Finished difference Result 3217 states and 11977 transitions. [2022-01-28 14:36:00,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:00,392 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:00,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:00,399 INFO L225 Difference]: With dead ends: 3217 [2022-01-28 14:36:00,399 INFO L226 Difference]: Without dead ends: 3006 [2022-01-28 14:36:00,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:00,400 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 97 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:00,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 155 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:00,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3006 states. [2022-01-28 14:36:00,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3006 to 1495. [2022-01-28 14:36:00,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1495 states, 1494 states have (on average 3.9772423025435075) internal successors, (5942), 1494 states have internal predecessors, (5942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:00,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1495 states to 1495 states and 5942 transitions. [2022-01-28 14:36:00,446 INFO L78 Accepts]: Start accepts. Automaton has 1495 states and 5942 transitions. Word has length 25 [2022-01-28 14:36:00,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:00,446 INFO L470 AbstractCegarLoop]: Abstraction has 1495 states and 5942 transitions. [2022-01-28 14:36:00,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:00,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1495 states and 5942 transitions. [2022-01-28 14:36:00,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:00,449 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:00,449 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:00,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-01-28 14:36:00,449 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:00,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:00,450 INFO L85 PathProgramCache]: Analyzing trace with hash -759137485, now seen corresponding path program 101 times [2022-01-28 14:36:00,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:00,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231846376] [2022-01-28 14:36:00,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:00,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:00,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:00,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:00,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:00,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231846376] [2022-01-28 14:36:00,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231846376] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:00,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:00,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:00,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904574539] [2022-01-28 14:36:00,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:00,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:00,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:00,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:00,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:00,575 INFO L87 Difference]: Start difference. First operand 1495 states and 5942 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:00,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:00,660 INFO L93 Difference]: Finished difference Result 3219 states and 11998 transitions. [2022-01-28 14:36:00,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:00,660 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:00,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:00,668 INFO L225 Difference]: With dead ends: 3219 [2022-01-28 14:36:00,668 INFO L226 Difference]: Without dead ends: 3032 [2022-01-28 14:36:00,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:00,668 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 105 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:00,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 142 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:00,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3032 states. [2022-01-28 14:36:00,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3032 to 1523. [2022-01-28 14:36:00,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1522 states have (on average 3.961892247043364) internal successors, (6030), 1522 states have internal predecessors, (6030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:00,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 6030 transitions. [2022-01-28 14:36:00,704 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 6030 transitions. Word has length 25 [2022-01-28 14:36:00,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:00,704 INFO L470 AbstractCegarLoop]: Abstraction has 1523 states and 6030 transitions. [2022-01-28 14:36:00,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:00,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 6030 transitions. [2022-01-28 14:36:00,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:00,707 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:00,707 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:00,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-01-28 14:36:00,707 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:00,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:00,707 INFO L85 PathProgramCache]: Analyzing trace with hash 321925141, now seen corresponding path program 102 times [2022-01-28 14:36:00,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:00,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639308148] [2022-01-28 14:36:00,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:00,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:00,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:00,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:00,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:00,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639308148] [2022-01-28 14:36:00,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639308148] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:00,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:00,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:00,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743193193] [2022-01-28 14:36:00,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:00,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:00,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:00,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:00,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:00,833 INFO L87 Difference]: Start difference. First operand 1523 states and 6030 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:00,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:00,948 INFO L93 Difference]: Finished difference Result 3215 states and 11958 transitions. [2022-01-28 14:36:00,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:00,949 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:00,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:00,957 INFO L225 Difference]: With dead ends: 3215 [2022-01-28 14:36:00,957 INFO L226 Difference]: Without dead ends: 2990 [2022-01-28 14:36:00,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:00,957 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 100 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:00,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 147 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:00,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2990 states. [2022-01-28 14:36:00,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2990 to 1481. [2022-01-28 14:36:00,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1481 states, 1480 states have (on average 3.985135135135135) internal successors, (5898), 1480 states have internal predecessors, (5898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:00,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 5898 transitions. [2022-01-28 14:36:00,993 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 5898 transitions. Word has length 25 [2022-01-28 14:36:00,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:00,993 INFO L470 AbstractCegarLoop]: Abstraction has 1481 states and 5898 transitions. [2022-01-28 14:36:00,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:00,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 5898 transitions. [2022-01-28 14:36:00,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:00,995 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:00,995 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:00,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-01-28 14:36:00,995 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:00,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:00,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1426973141, now seen corresponding path program 103 times [2022-01-28 14:36:00,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:00,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049162114] [2022-01-28 14:36:00,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:00,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:00,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:01,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:01,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:01,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049162114] [2022-01-28 14:36:01,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049162114] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:01,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:01,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:01,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473889416] [2022-01-28 14:36:01,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:01,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:01,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:01,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:01,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:01,084 INFO L87 Difference]: Start difference. First operand 1481 states and 5898 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:01,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:01,244 INFO L93 Difference]: Finished difference Result 3346 states and 12460 transitions. [2022-01-28 14:36:01,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:01,245 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:01,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:01,256 INFO L225 Difference]: With dead ends: 3346 [2022-01-28 14:36:01,256 INFO L226 Difference]: Without dead ends: 3157 [2022-01-28 14:36:01,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:01,256 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 99 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:01,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 179 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:01,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3157 states. [2022-01-28 14:36:01,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3157 to 1550. [2022-01-28 14:36:01,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1550 states, 1549 states have (on average 3.9664299548095547) internal successors, (6144), 1549 states have internal predecessors, (6144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:01,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1550 states to 1550 states and 6144 transitions. [2022-01-28 14:36:01,300 INFO L78 Accepts]: Start accepts. Automaton has 1550 states and 6144 transitions. Word has length 25 [2022-01-28 14:36:01,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:01,300 INFO L470 AbstractCegarLoop]: Abstraction has 1550 states and 6144 transitions. [2022-01-28 14:36:01,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:01,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1550 states and 6144 transitions. [2022-01-28 14:36:01,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:01,304 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:01,304 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:01,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-01-28 14:36:01,304 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:01,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:01,304 INFO L85 PathProgramCache]: Analyzing trace with hash -616363853, now seen corresponding path program 104 times [2022-01-28 14:36:01,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:01,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213790565] [2022-01-28 14:36:01,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:01,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:01,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:01,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:01,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213790565] [2022-01-28 14:36:01,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213790565] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:01,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:01,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:01,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727534007] [2022-01-28 14:36:01,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:01,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:01,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:01,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:01,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:01,412 INFO L87 Difference]: Start difference. First operand 1550 states and 6144 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:01,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:01,539 INFO L93 Difference]: Finished difference Result 3344 states and 12425 transitions. [2022-01-28 14:36:01,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:01,539 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:01,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:01,547 INFO L225 Difference]: With dead ends: 3344 [2022-01-28 14:36:01,547 INFO L226 Difference]: Without dead ends: 3127 [2022-01-28 14:36:01,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:01,548 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 119 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:01,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 157 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:01,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3127 states. [2022-01-28 14:36:01,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3127 to 1520. [2022-01-28 14:36:01,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1520 states, 1519 states have (on average 3.9736668861092825) internal successors, (6036), 1519 states have internal predecessors, (6036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:01,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 6036 transitions. [2022-01-28 14:36:01,581 INFO L78 Accepts]: Start accepts. Automaton has 1520 states and 6036 transitions. Word has length 25 [2022-01-28 14:36:01,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:01,582 INFO L470 AbstractCegarLoop]: Abstraction has 1520 states and 6036 transitions. [2022-01-28 14:36:01,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:01,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1520 states and 6036 transitions. [2022-01-28 14:36:01,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:01,599 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:01,599 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:01,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-01-28 14:36:01,600 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:01,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:01,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1852713429, now seen corresponding path program 105 times [2022-01-28 14:36:01,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:01,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81642847] [2022-01-28 14:36:01,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:01,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:01,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:01,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:01,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:01,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81642847] [2022-01-28 14:36:01,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81642847] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:01,747 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:01,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:01,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833469396] [2022-01-28 14:36:01,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:01,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:01,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:01,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:01,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:01,748 INFO L87 Difference]: Start difference. First operand 1520 states and 6036 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:02,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:02,004 INFO L93 Difference]: Finished difference Result 3414 states and 12679 transitions. [2022-01-28 14:36:02,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:02,004 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:02,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:02,015 INFO L225 Difference]: With dead ends: 3414 [2022-01-28 14:36:02,015 INFO L226 Difference]: Without dead ends: 3225 [2022-01-28 14:36:02,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:02,015 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 118 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:02,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 137 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-28 14:36:02,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3225 states. [2022-01-28 14:36:02,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3225 to 1583. [2022-01-28 14:36:02,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1582 states have (on average 3.946270543615676) internal successors, (6243), 1582 states have internal predecessors, (6243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:02,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 6243 transitions. [2022-01-28 14:36:02,066 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 6243 transitions. Word has length 25 [2022-01-28 14:36:02,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:02,066 INFO L470 AbstractCegarLoop]: Abstraction has 1583 states and 6243 transitions. [2022-01-28 14:36:02,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:02,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 6243 transitions. [2022-01-28 14:36:02,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:02,070 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:02,070 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:02,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-01-28 14:36:02,070 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:02,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:02,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1296925141, now seen corresponding path program 106 times [2022-01-28 14:36:02,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:02,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128650189] [2022-01-28 14:36:02,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:02,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:02,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:02,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:02,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:02,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128650189] [2022-01-28 14:36:02,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128650189] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:02,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:02,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:02,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836790115] [2022-01-28 14:36:02,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:02,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:02,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:02,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:02,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:02,187 INFO L87 Difference]: Start difference. First operand 1583 states and 6243 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:02,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:02,302 INFO L93 Difference]: Finished difference Result 3447 states and 12762 transitions. [2022-01-28 14:36:02,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:02,302 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:02,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:02,312 INFO L225 Difference]: With dead ends: 3447 [2022-01-28 14:36:02,312 INFO L226 Difference]: Without dead ends: 3162 [2022-01-28 14:36:02,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:02,312 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 103 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:02,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 157 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:02,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3162 states. [2022-01-28 14:36:02,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3162 to 1520. [2022-01-28 14:36:02,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1520 states, 1519 states have (on average 3.953258722843976) internal successors, (6005), 1519 states have internal predecessors, (6005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:02,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 6005 transitions. [2022-01-28 14:36:02,354 INFO L78 Accepts]: Start accepts. Automaton has 1520 states and 6005 transitions. Word has length 25 [2022-01-28 14:36:02,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:02,354 INFO L470 AbstractCegarLoop]: Abstraction has 1520 states and 6005 transitions. [2022-01-28 14:36:02,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:02,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1520 states and 6005 transitions. [2022-01-28 14:36:02,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:02,357 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:02,357 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:02,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-01-28 14:36:02,358 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:02,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:02,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1459906253, now seen corresponding path program 107 times [2022-01-28 14:36:02,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:02,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084466467] [2022-01-28 14:36:02,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:02,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:02,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:02,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:02,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:02,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084466467] [2022-01-28 14:36:02,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084466467] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:02,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:02,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:02,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52889474] [2022-01-28 14:36:02,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:02,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:02,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:02,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:02,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:02,510 INFO L87 Difference]: Start difference. First operand 1520 states and 6005 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:02,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:02,637 INFO L93 Difference]: Finished difference Result 3393 states and 12587 transitions. [2022-01-28 14:36:02,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:02,638 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:02,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:02,646 INFO L225 Difference]: With dead ends: 3393 [2022-01-28 14:36:02,646 INFO L226 Difference]: Without dead ends: 3206 [2022-01-28 14:36:02,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:02,646 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 114 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:02,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 146 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:02,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3206 states. [2022-01-28 14:36:02,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3206 to 1566. [2022-01-28 14:36:02,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1566 states, 1565 states have (on average 3.9373801916932907) internal successors, (6162), 1565 states have internal predecessors, (6162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:02,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 6162 transitions. [2022-01-28 14:36:02,683 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 6162 transitions. Word has length 25 [2022-01-28 14:36:02,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:02,683 INFO L470 AbstractCegarLoop]: Abstraction has 1566 states and 6162 transitions. [2022-01-28 14:36:02,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:02,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 6162 transitions. [2022-01-28 14:36:02,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:02,686 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:02,686 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:02,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-01-28 14:36:02,686 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:02,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:02,686 INFO L85 PathProgramCache]: Analyzing trace with hash 477671445, now seen corresponding path program 108 times [2022-01-28 14:36:02,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:02,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135653136] [2022-01-28 14:36:02,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:02,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:02,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:02,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:02,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135653136] [2022-01-28 14:36:02,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135653136] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:02,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:02,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:02,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747688079] [2022-01-28 14:36:02,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:02,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:02,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:02,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:02,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:02,792 INFO L87 Difference]: Start difference. First operand 1566 states and 6162 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:02,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:02,896 INFO L93 Difference]: Finished difference Result 3428 states and 12676 transitions. [2022-01-28 14:36:02,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:02,896 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:02,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:02,904 INFO L225 Difference]: With dead ends: 3428 [2022-01-28 14:36:02,904 INFO L226 Difference]: Without dead ends: 3121 [2022-01-28 14:36:02,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:02,904 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 108 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:02,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 177 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:02,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3121 states. [2022-01-28 14:36:02,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3121 to 1481. [2022-01-28 14:36:02,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1481 states, 1480 states have (on average 3.972297297297297) internal successors, (5879), 1480 states have internal predecessors, (5879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:02,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 5879 transitions. [2022-01-28 14:36:02,936 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 5879 transitions. Word has length 25 [2022-01-28 14:36:02,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:02,936 INFO L470 AbstractCegarLoop]: Abstraction has 1481 states and 5879 transitions. [2022-01-28 14:36:02,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:02,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 5879 transitions. [2022-01-28 14:36:02,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:02,939 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:02,939 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:02,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-01-28 14:36:02,939 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:02,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:02,939 INFO L85 PathProgramCache]: Analyzing trace with hash 570225075, now seen corresponding path program 109 times [2022-01-28 14:36:02,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:02,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851367094] [2022-01-28 14:36:02,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:02,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:03,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:03,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:03,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851367094] [2022-01-28 14:36:03,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851367094] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:03,033 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:03,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:03,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239088434] [2022-01-28 14:36:03,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:03,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:03,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:03,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:03,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:03,033 INFO L87 Difference]: Start difference. First operand 1481 states and 5879 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:03,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:03,129 INFO L93 Difference]: Finished difference Result 3323 states and 12372 transitions. [2022-01-28 14:36:03,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:03,130 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:03,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:03,137 INFO L225 Difference]: With dead ends: 3323 [2022-01-28 14:36:03,137 INFO L226 Difference]: Without dead ends: 3134 [2022-01-28 14:36:03,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:03,138 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 112 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:03,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 154 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:03,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3134 states. [2022-01-28 14:36:03,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3134 to 1539. [2022-01-28 14:36:03,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1539 states, 1538 states have (on average 3.963589076723017) internal successors, (6096), 1538 states have internal predecessors, (6096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:03,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1539 states to 1539 states and 6096 transitions. [2022-01-28 14:36:03,170 INFO L78 Accepts]: Start accepts. Automaton has 1539 states and 6096 transitions. Word has length 25 [2022-01-28 14:36:03,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:03,170 INFO L470 AbstractCegarLoop]: Abstraction has 1539 states and 6096 transitions. [2022-01-28 14:36:03,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:03,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1539 states and 6096 transitions. [2022-01-28 14:36:03,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:03,172 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:03,173 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:03,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-01-28 14:36:03,173 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:03,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:03,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1762691507, now seen corresponding path program 110 times [2022-01-28 14:36:03,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:03,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865652176] [2022-01-28 14:36:03,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:03,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:03,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:03,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:03,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:03,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865652176] [2022-01-28 14:36:03,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865652176] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:03,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:03,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:03,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321629059] [2022-01-28 14:36:03,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:03,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:03,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:03,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:03,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:03,345 INFO L87 Difference]: Start difference. First operand 1539 states and 6096 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:03,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:03,467 INFO L93 Difference]: Finished difference Result 3317 states and 12327 transitions. [2022-01-28 14:36:03,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:03,468 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:03,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:03,475 INFO L225 Difference]: With dead ends: 3317 [2022-01-28 14:36:03,475 INFO L226 Difference]: Without dead ends: 3106 [2022-01-28 14:36:03,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:03,476 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 107 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:03,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 148 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:03,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3106 states. [2022-01-28 14:36:03,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3106 to 1511. [2022-01-28 14:36:03,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1511 states, 1510 states have (on average 3.9695364238410598) internal successors, (5994), 1510 states have internal predecessors, (5994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:03,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 5994 transitions. [2022-01-28 14:36:03,507 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 5994 transitions. Word has length 25 [2022-01-28 14:36:03,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:03,507 INFO L470 AbstractCegarLoop]: Abstraction has 1511 states and 5994 transitions. [2022-01-28 14:36:03,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:03,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 5994 transitions. [2022-01-28 14:36:03,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:03,510 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:03,510 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:03,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-01-28 14:36:03,510 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:03,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:03,510 INFO L85 PathProgramCache]: Analyzing trace with hash -740355947, now seen corresponding path program 111 times [2022-01-28 14:36:03,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:03,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922624479] [2022-01-28 14:36:03,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:03,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:03,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:03,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:03,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:03,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922624479] [2022-01-28 14:36:03,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922624479] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:03,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:03,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:03,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280373597] [2022-01-28 14:36:03,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:03,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:03,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:03,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:03,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:03,634 INFO L87 Difference]: Start difference. First operand 1511 states and 5994 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:03,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:03,753 INFO L93 Difference]: Finished difference Result 3397 states and 12611 transitions. [2022-01-28 14:36:03,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:03,753 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:03,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:03,761 INFO L225 Difference]: With dead ends: 3397 [2022-01-28 14:36:03,761 INFO L226 Difference]: Without dead ends: 3208 [2022-01-28 14:36:03,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:03,762 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 117 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:03,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 137 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:03,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3208 states. [2022-01-28 14:36:03,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3208 to 1574. [2022-01-28 14:36:03,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1574 states, 1573 states have (on average 3.9421487603305785) internal successors, (6201), 1573 states have internal predecessors, (6201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:03,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 6201 transitions. [2022-01-28 14:36:03,796 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 6201 transitions. Word has length 25 [2022-01-28 14:36:03,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:03,796 INFO L470 AbstractCegarLoop]: Abstraction has 1574 states and 6201 transitions. [2022-01-28 14:36:03,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:03,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 6201 transitions. [2022-01-28 14:36:03,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:03,799 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:03,799 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:03,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-01-28 14:36:03,799 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:03,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:03,799 INFO L85 PathProgramCache]: Analyzing trace with hash -726136397, now seen corresponding path program 112 times [2022-01-28 14:36:03,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:03,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293588768] [2022-01-28 14:36:03,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:03,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:03,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:03,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:03,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:03,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293588768] [2022-01-28 14:36:03,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293588768] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:03,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:03,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:03,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074875392] [2022-01-28 14:36:03,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:03,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:03,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:03,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:03,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:03,914 INFO L87 Difference]: Start difference. First operand 1574 states and 6201 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:04,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:04,001 INFO L93 Difference]: Finished difference Result 3430 states and 12694 transitions. [2022-01-28 14:36:04,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:04,002 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:04,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:04,009 INFO L225 Difference]: With dead ends: 3430 [2022-01-28 14:36:04,009 INFO L226 Difference]: Without dead ends: 3145 [2022-01-28 14:36:04,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:04,010 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 123 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:04,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 152 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:04,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3145 states. [2022-01-28 14:36:04,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3145 to 1511. [2022-01-28 14:36:04,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1511 states, 1510 states have (on average 3.9496688741721853) internal successors, (5964), 1510 states have internal predecessors, (5964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:04,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 5964 transitions. [2022-01-28 14:36:04,042 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 5964 transitions. Word has length 25 [2022-01-28 14:36:04,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:04,042 INFO L470 AbstractCegarLoop]: Abstraction has 1511 states and 5964 transitions. [2022-01-28 14:36:04,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:04,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 5964 transitions. [2022-01-28 14:36:04,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:04,045 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:04,045 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:04,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-01-28 14:36:04,045 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:04,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:04,045 INFO L85 PathProgramCache]: Analyzing trace with hash 226091443, now seen corresponding path program 113 times [2022-01-28 14:36:04,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:04,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544908588] [2022-01-28 14:36:04,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:04,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:04,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:04,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:04,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:04,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544908588] [2022-01-28 14:36:04,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544908588] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:04,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:04,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:04,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100874934] [2022-01-28 14:36:04,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:04,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:04,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:04,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:04,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:04,124 INFO L87 Difference]: Start difference. First operand 1511 states and 5964 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:04,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:04,210 INFO L93 Difference]: Finished difference Result 3366 states and 12489 transitions. [2022-01-28 14:36:04,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:04,210 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:04,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:04,217 INFO L225 Difference]: With dead ends: 3366 [2022-01-28 14:36:04,217 INFO L226 Difference]: Without dead ends: 3183 [2022-01-28 14:36:04,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:04,217 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 108 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:04,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 142 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:04,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3183 states. [2022-01-28 14:36:04,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3183 to 1555. [2022-01-28 14:36:04,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1555 states, 1554 states have (on average 3.9356499356499355) internal successors, (6116), 1554 states have internal predecessors, (6116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:04,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 6116 transitions. [2022-01-28 14:36:04,247 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 6116 transitions. Word has length 25 [2022-01-28 14:36:04,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:04,247 INFO L470 AbstractCegarLoop]: Abstraction has 1555 states and 6116 transitions. [2022-01-28 14:36:04,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:04,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 6116 transitions. [2022-01-28 14:36:04,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:04,250 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:04,250 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:04,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-01-28 14:36:04,250 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:04,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:04,250 INFO L85 PathProgramCache]: Analyzing trace with hash -843427563, now seen corresponding path program 114 times [2022-01-28 14:36:04,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:04,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772807352] [2022-01-28 14:36:04,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:04,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:04,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:04,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:04,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:04,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772807352] [2022-01-28 14:36:04,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772807352] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:04,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:04,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:04,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219051274] [2022-01-28 14:36:04,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:04,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:04,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:04,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:04,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:04,331 INFO L87 Difference]: Start difference. First operand 1555 states and 6116 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:04,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:04,417 INFO L93 Difference]: Finished difference Result 3405 states and 12592 transitions. [2022-01-28 14:36:04,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:04,417 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:04,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:04,424 INFO L225 Difference]: With dead ends: 3405 [2022-01-28 14:36:04,424 INFO L226 Difference]: Without dead ends: 3109 [2022-01-28 14:36:04,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:04,424 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 95 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:04,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 158 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:04,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3109 states. [2022-01-28 14:36:04,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3109 to 1481. [2022-01-28 14:36:04,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1481 states, 1480 states have (on average 3.962162162162162) internal successors, (5864), 1480 states have internal predecessors, (5864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:04,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 5864 transitions. [2022-01-28 14:36:04,452 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 5864 transitions. Word has length 25 [2022-01-28 14:36:04,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:04,452 INFO L470 AbstractCegarLoop]: Abstraction has 1481 states and 5864 transitions. [2022-01-28 14:36:04,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:04,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 5864 transitions. [2022-01-28 14:36:04,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:04,454 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:04,454 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:04,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-01-28 14:36:04,454 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:04,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:04,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1542621585, now seen corresponding path program 115 times [2022-01-28 14:36:04,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:04,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110428738] [2022-01-28 14:36:04,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:04,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:04,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:04,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:04,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110428738] [2022-01-28 14:36:04,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110428738] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:04,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:04,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:04,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201143412] [2022-01-28 14:36:04,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:04,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:04,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:04,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:04,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:04,583 INFO L87 Difference]: Start difference. First operand 1481 states and 5864 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:04,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:04,704 INFO L93 Difference]: Finished difference Result 3292 states and 12263 transitions. [2022-01-28 14:36:04,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:04,704 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:04,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:04,711 INFO L225 Difference]: With dead ends: 3292 [2022-01-28 14:36:04,711 INFO L226 Difference]: Without dead ends: 3105 [2022-01-28 14:36:04,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:04,712 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 102 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:04,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 160 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:04,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3105 states. [2022-01-28 14:36:04,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3105 to 1531. [2022-01-28 14:36:04,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1531 states, 1530 states have (on average 3.9562091503267975) internal successors, (6053), 1530 states have internal predecessors, (6053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:04,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 6053 transitions. [2022-01-28 14:36:04,740 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 6053 transitions. Word has length 25 [2022-01-28 14:36:04,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:04,740 INFO L470 AbstractCegarLoop]: Abstraction has 1531 states and 6053 transitions. [2022-01-28 14:36:04,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:04,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 6053 transitions. [2022-01-28 14:36:04,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:04,742 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:04,742 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:04,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-01-28 14:36:04,742 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:04,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:04,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1671283085, now seen corresponding path program 116 times [2022-01-28 14:36:04,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:04,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139500724] [2022-01-28 14:36:04,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:04,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:04,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:04,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:04,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:04,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139500724] [2022-01-28 14:36:04,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139500724] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:04,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:04,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:04,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449017890] [2022-01-28 14:36:04,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:04,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:04,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:04,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:04,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:04,864 INFO L87 Difference]: Start difference. First operand 1531 states and 6053 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:04,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:04,986 INFO L93 Difference]: Finished difference Result 3288 states and 12223 transitions. [2022-01-28 14:36:04,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:04,986 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:04,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:04,993 INFO L225 Difference]: With dead ends: 3288 [2022-01-28 14:36:04,993 INFO L226 Difference]: Without dead ends: 3077 [2022-01-28 14:36:04,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:04,993 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 114 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:04,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 148 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:04,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3077 states. [2022-01-28 14:36:05,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3077 to 1503. [2022-01-28 14:36:05,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1503 states, 1502 states have (on average 3.9620505992010653) internal successors, (5951), 1502 states have internal predecessors, (5951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:05,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1503 states to 1503 states and 5951 transitions. [2022-01-28 14:36:05,025 INFO L78 Accepts]: Start accepts. Automaton has 1503 states and 5951 transitions. Word has length 25 [2022-01-28 14:36:05,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:05,025 INFO L470 AbstractCegarLoop]: Abstraction has 1503 states and 5951 transitions. [2022-01-28 14:36:05,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:05,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1503 states and 5951 transitions. [2022-01-28 14:36:05,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:05,028 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:05,028 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:05,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-01-28 14:36:05,028 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:05,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:05,028 INFO L85 PathProgramCache]: Analyzing trace with hash 232040563, now seen corresponding path program 117 times [2022-01-28 14:36:05,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:05,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021742974] [2022-01-28 14:36:05,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:05,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:05,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:05,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:05,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021742974] [2022-01-28 14:36:05,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021742974] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:05,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:05,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:05,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180778330] [2022-01-28 14:36:05,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:05,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:05,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:05,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:05,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:05,118 INFO L87 Difference]: Start difference. First operand 1503 states and 5951 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:05,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:05,201 INFO L93 Difference]: Finished difference Result 3349 states and 12451 transitions. [2022-01-28 14:36:05,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:05,201 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:05,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:05,208 INFO L225 Difference]: With dead ends: 3349 [2022-01-28 14:36:05,208 INFO L226 Difference]: Without dead ends: 3162 [2022-01-28 14:36:05,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:05,208 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 111 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:05,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 139 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:05,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3162 states. [2022-01-28 14:36:05,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3162 to 1549. [2022-01-28 14:36:05,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1549 states, 1548 states have (on average 3.945736434108527) internal successors, (6108), 1548 states have internal predecessors, (6108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:05,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1549 states to 1549 states and 6108 transitions. [2022-01-28 14:36:05,267 INFO L78 Accepts]: Start accepts. Automaton has 1549 states and 6108 transitions. Word has length 25 [2022-01-28 14:36:05,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:05,267 INFO L470 AbstractCegarLoop]: Abstraction has 1549 states and 6108 transitions. [2022-01-28 14:36:05,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:05,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1549 states and 6108 transitions. [2022-01-28 14:36:05,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:05,270 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:05,271 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:05,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2022-01-28 14:36:05,271 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:05,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:05,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1555341197, now seen corresponding path program 118 times [2022-01-28 14:36:05,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:05,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623413531] [2022-01-28 14:36:05,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:05,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:05,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:05,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:05,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:05,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623413531] [2022-01-28 14:36:05,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623413531] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:05,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:05,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:05,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302376504] [2022-01-28 14:36:05,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:05,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:05,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:05,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:05,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:05,400 INFO L87 Difference]: Start difference. First operand 1549 states and 6108 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:05,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:05,510 INFO L93 Difference]: Finished difference Result 3384 states and 12540 transitions. [2022-01-28 14:36:05,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:05,510 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:05,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:05,517 INFO L225 Difference]: With dead ends: 3384 [2022-01-28 14:36:05,517 INFO L226 Difference]: Without dead ends: 3116 [2022-01-28 14:36:05,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:05,517 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 101 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:05,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 146 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:05,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3116 states. [2022-01-28 14:36:05,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3116 to 1503. [2022-01-28 14:36:05,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1503 states, 1502 states have (on average 3.947403462050599) internal successors, (5929), 1502 states have internal predecessors, (5929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:05,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1503 states to 1503 states and 5929 transitions. [2022-01-28 14:36:05,545 INFO L78 Accepts]: Start accepts. Automaton has 1503 states and 5929 transitions. Word has length 25 [2022-01-28 14:36:05,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:05,545 INFO L470 AbstractCegarLoop]: Abstraction has 1503 states and 5929 transitions. [2022-01-28 14:36:05,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:05,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1503 states and 5929 transitions. [2022-01-28 14:36:05,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:05,548 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:05,548 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:05,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2022-01-28 14:36:05,548 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:05,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:05,548 INFO L85 PathProgramCache]: Analyzing trace with hash 620045525, now seen corresponding path program 119 times [2022-01-28 14:36:05,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:05,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419534752] [2022-01-28 14:36:05,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:05,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:05,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:05,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:05,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:05,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419534752] [2022-01-28 14:36:05,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419534752] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:05,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:05,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:05,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840034721] [2022-01-28 14:36:05,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:05,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:05,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:05,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:05,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:05,670 INFO L87 Difference]: Start difference. First operand 1503 states and 5929 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:05,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:05,789 INFO L93 Difference]: Finished difference Result 3339 states and 12398 transitions. [2022-01-28 14:36:05,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:05,789 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:05,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:05,796 INFO L225 Difference]: With dead ends: 3339 [2022-01-28 14:36:05,797 INFO L226 Difference]: Without dead ends: 3156 [2022-01-28 14:36:05,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:05,797 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 113 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:05,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 142 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:05,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3156 states. [2022-01-28 14:36:05,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3156 to 1547. [2022-01-28 14:36:05,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1547 states, 1546 states have (on average 3.9333764553686934) internal successors, (6081), 1546 states have internal predecessors, (6081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:05,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1547 states to 1547 states and 6081 transitions. [2022-01-28 14:36:05,831 INFO L78 Accepts]: Start accepts. Automaton has 1547 states and 6081 transitions. Word has length 25 [2022-01-28 14:36:05,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:05,831 INFO L470 AbstractCegarLoop]: Abstraction has 1547 states and 6081 transitions. [2022-01-28 14:36:05,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:05,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1547 states and 6081 transitions. [2022-01-28 14:36:05,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:05,834 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:05,834 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:05,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2022-01-28 14:36:05,834 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:05,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:05,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1824694707, now seen corresponding path program 120 times [2022-01-28 14:36:05,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:05,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685228668] [2022-01-28 14:36:05,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:05,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:05,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:05,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:05,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:05,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685228668] [2022-01-28 14:36:05,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685228668] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:05,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:05,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:05,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224427595] [2022-01-28 14:36:05,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:05,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:05,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:05,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:05,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:05,956 INFO L87 Difference]: Start difference. First operand 1547 states and 6081 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:06,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:06,063 INFO L93 Difference]: Finished difference Result 3378 states and 12501 transitions. [2022-01-28 14:36:06,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:06,063 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:06,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:06,070 INFO L225 Difference]: With dead ends: 3378 [2022-01-28 14:36:06,070 INFO L226 Difference]: Without dead ends: 3057 [2022-01-28 14:36:06,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:06,071 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 91 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:06,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 178 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:06,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3057 states. [2022-01-28 14:36:06,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3057 to 1448. [2022-01-28 14:36:06,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1447 states have (on average 3.9979267449896336) internal successors, (5785), 1447 states have internal predecessors, (5785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:06,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5785 transitions. [2022-01-28 14:36:06,101 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5785 transitions. Word has length 25 [2022-01-28 14:36:06,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:06,101 INFO L470 AbstractCegarLoop]: Abstraction has 1448 states and 5785 transitions. [2022-01-28 14:36:06,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:06,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5785 transitions. [2022-01-28 14:36:06,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:06,103 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:06,103 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:06,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2022-01-28 14:36:06,104 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:06,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:06,104 INFO L85 PathProgramCache]: Analyzing trace with hash -863357259, now seen corresponding path program 121 times [2022-01-28 14:36:06,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:06,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983210694] [2022-01-28 14:36:06,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:06,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:06,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:06,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:06,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983210694] [2022-01-28 14:36:06,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983210694] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:06,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:06,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:06,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696802144] [2022-01-28 14:36:06,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:06,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:06,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:06,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:06,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:06,197 INFO L87 Difference]: Start difference. First operand 1448 states and 5785 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:06,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:06,299 INFO L93 Difference]: Finished difference Result 3141 states and 11643 transitions. [2022-01-28 14:36:06,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:06,299 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:06,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:06,306 INFO L225 Difference]: With dead ends: 3141 [2022-01-28 14:36:06,306 INFO L226 Difference]: Without dead ends: 2982 [2022-01-28 14:36:06,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:06,306 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 116 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:06,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 141 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:06,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2982 states. [2022-01-28 14:36:06,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2982 to 1504. [2022-01-28 14:36:06,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1504 states, 1503 states have (on average 3.9900199600798403) internal successors, (5997), 1503 states have internal predecessors, (5997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:06,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 5997 transitions. [2022-01-28 14:36:06,336 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 5997 transitions. Word has length 25 [2022-01-28 14:36:06,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:06,336 INFO L470 AbstractCegarLoop]: Abstraction has 1504 states and 5997 transitions. [2022-01-28 14:36:06,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:06,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 5997 transitions. [2022-01-28 14:36:06,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:06,338 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:06,338 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:06,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2022-01-28 14:36:06,338 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:06,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:06,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1871655243, now seen corresponding path program 122 times [2022-01-28 14:36:06,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:06,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156930190] [2022-01-28 14:36:06,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:06,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:06,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:06,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:06,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156930190] [2022-01-28 14:36:06,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156930190] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:06,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:06,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:06,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673181022] [2022-01-28 14:36:06,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:06,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:06,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:06,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:06,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:06,426 INFO L87 Difference]: Start difference. First operand 1504 states and 5997 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:06,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:06,514 INFO L93 Difference]: Finished difference Result 3204 states and 11850 transitions. [2022-01-28 14:36:06,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:06,515 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:06,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:06,521 INFO L225 Difference]: With dead ends: 3204 [2022-01-28 14:36:06,521 INFO L226 Difference]: Without dead ends: 2950 [2022-01-28 14:36:06,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:06,521 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 106 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:06,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 161 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:06,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2022-01-28 14:36:06,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 1472. [2022-01-28 14:36:06,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1471 states have (on average 3.989802855200544) internal successors, (5869), 1471 states have internal predecessors, (5869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:06,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5869 transitions. [2022-01-28 14:36:06,551 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5869 transitions. Word has length 25 [2022-01-28 14:36:06,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:06,552 INFO L470 AbstractCegarLoop]: Abstraction has 1472 states and 5869 transitions. [2022-01-28 14:36:06,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:06,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5869 transitions. [2022-01-28 14:36:06,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:06,554 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:06,554 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:06,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2022-01-28 14:36:06,554 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:06,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:06,554 INFO L85 PathProgramCache]: Analyzing trace with hash -824742575, now seen corresponding path program 123 times [2022-01-28 14:36:06,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:06,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795539656] [2022-01-28 14:36:06,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:06,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:06,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:06,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:06,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795539656] [2022-01-28 14:36:06,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795539656] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:06,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:06,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:06,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234092773] [2022-01-28 14:36:06,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:06,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:06,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:06,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:06,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:06,641 INFO L87 Difference]: Start difference. First operand 1472 states and 5869 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:06,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:06,725 INFO L93 Difference]: Finished difference Result 3092 states and 11449 transitions. [2022-01-28 14:36:06,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:06,725 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:06,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:06,732 INFO L225 Difference]: With dead ends: 3092 [2022-01-28 14:36:06,732 INFO L226 Difference]: Without dead ends: 2933 [2022-01-28 14:36:06,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:06,732 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 115 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:06,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 153 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:06,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2933 states. [2022-01-28 14:36:06,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2933 to 1488. [2022-01-28 14:36:06,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1487 states have (on average 3.9791526563550774) internal successors, (5917), 1487 states have internal predecessors, (5917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:06,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 5917 transitions. [2022-01-28 14:36:06,775 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 5917 transitions. Word has length 25 [2022-01-28 14:36:06,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:06,775 INFO L470 AbstractCegarLoop]: Abstraction has 1488 states and 5917 transitions. [2022-01-28 14:36:06,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:06,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 5917 transitions. [2022-01-28 14:36:06,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:06,777 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:06,777 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:06,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2022-01-28 14:36:06,778 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:06,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:06,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1880289971, now seen corresponding path program 124 times [2022-01-28 14:36:06,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:06,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439176750] [2022-01-28 14:36:06,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:06,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:06,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:06,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:06,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:06,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439176750] [2022-01-28 14:36:06,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439176750] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:06,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:06,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:06,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112827736] [2022-01-28 14:36:06,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:06,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:06,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:06,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:06,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:06,862 INFO L87 Difference]: Start difference. First operand 1488 states and 5917 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:06,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:06,982 INFO L93 Difference]: Finished difference Result 3122 states and 11542 transitions. [2022-01-28 14:36:06,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:06,982 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:06,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:06,989 INFO L225 Difference]: With dead ends: 3122 [2022-01-28 14:36:06,989 INFO L226 Difference]: Without dead ends: 2917 [2022-01-28 14:36:06,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:06,989 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 93 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:06,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 180 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:06,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2022-01-28 14:36:07,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 1472. [2022-01-28 14:36:07,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1471 states have (on average 3.9843643779741673) internal successors, (5861), 1471 states have internal predecessors, (5861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:07,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5861 transitions. [2022-01-28 14:36:07,020 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5861 transitions. Word has length 25 [2022-01-28 14:36:07,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:07,020 INFO L470 AbstractCegarLoop]: Abstraction has 1472 states and 5861 transitions. [2022-01-28 14:36:07,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:07,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5861 transitions. [2022-01-28 14:36:07,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:07,022 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:07,022 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:07,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2022-01-28 14:36:07,022 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:07,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:07,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1242126485, now seen corresponding path program 125 times [2022-01-28 14:36:07,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:07,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916164317] [2022-01-28 14:36:07,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:07,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:07,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:07,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:07,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:07,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916164317] [2022-01-28 14:36:07,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916164317] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:07,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:07,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:07,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946001436] [2022-01-28 14:36:07,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:07,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:07,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:07,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:07,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:07,101 INFO L87 Difference]: Start difference. First operand 1472 states and 5861 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:07,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:07,189 INFO L93 Difference]: Finished difference Result 3232 states and 11947 transitions. [2022-01-28 14:36:07,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:07,189 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:07,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:07,196 INFO L225 Difference]: With dead ends: 3232 [2022-01-28 14:36:07,196 INFO L226 Difference]: Without dead ends: 3043 [2022-01-28 14:36:07,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:07,196 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 113 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:07,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 152 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:07,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3043 states. [2022-01-28 14:36:07,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3043 to 1535. [2022-01-28 14:36:07,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1535 states, 1534 states have (on average 3.955671447196871) internal successors, (6068), 1534 states have internal predecessors, (6068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:07,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 6068 transitions. [2022-01-28 14:36:07,225 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 6068 transitions. Word has length 25 [2022-01-28 14:36:07,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:07,225 INFO L470 AbstractCegarLoop]: Abstraction has 1535 states and 6068 transitions. [2022-01-28 14:36:07,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:07,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 6068 transitions. [2022-01-28 14:36:07,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:07,227 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:07,227 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:07,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2022-01-28 14:36:07,227 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:07,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:07,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1540179443, now seen corresponding path program 126 times [2022-01-28 14:36:07,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:07,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576854319] [2022-01-28 14:36:07,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:07,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:07,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:07,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:07,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:07,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576854319] [2022-01-28 14:36:07,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576854319] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:07,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:07,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:07,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006635734] [2022-01-28 14:36:07,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:07,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:07,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:07,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:07,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:07,310 INFO L87 Difference]: Start difference. First operand 1535 states and 6068 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:07,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:07,391 INFO L93 Difference]: Finished difference Result 3265 states and 12030 transitions. [2022-01-28 14:36:07,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:07,391 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:07,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:07,397 INFO L225 Difference]: With dead ends: 3265 [2022-01-28 14:36:07,397 INFO L226 Difference]: Without dead ends: 2956 [2022-01-28 14:36:07,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:07,398 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 111 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:07,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 151 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:07,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2022-01-28 14:36:07,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1448. [2022-01-28 14:36:07,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1447 states have (on average 3.9896337249481686) internal successors, (5773), 1447 states have internal predecessors, (5773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:07,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5773 transitions. [2022-01-28 14:36:07,424 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5773 transitions. Word has length 25 [2022-01-28 14:36:07,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:07,424 INFO L470 AbstractCegarLoop]: Abstraction has 1448 states and 5773 transitions. [2022-01-28 14:36:07,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:07,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5773 transitions. [2022-01-28 14:36:07,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:07,427 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:07,427 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:07,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2022-01-28 14:36:07,427 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:07,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:07,427 INFO L85 PathProgramCache]: Analyzing trace with hash 804518581, now seen corresponding path program 127 times [2022-01-28 14:36:07,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:07,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672027166] [2022-01-28 14:36:07,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:07,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:07,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:07,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:07,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672027166] [2022-01-28 14:36:07,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672027166] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:07,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:07,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:07,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462459168] [2022-01-28 14:36:07,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:07,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:07,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:07,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:07,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:07,548 INFO L87 Difference]: Start difference. First operand 1448 states and 5773 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:07,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:07,635 INFO L93 Difference]: Finished difference Result 3114 states and 11547 transitions. [2022-01-28 14:36:07,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:07,636 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:07,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:07,642 INFO L225 Difference]: With dead ends: 3114 [2022-01-28 14:36:07,642 INFO L226 Difference]: Without dead ends: 2955 [2022-01-28 14:36:07,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:07,642 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 105 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:07,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 172 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:07,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2955 states. [2022-01-28 14:36:07,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2955 to 1496. [2022-01-28 14:36:07,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1496 states, 1495 states have (on average 3.9846153846153847) internal successors, (5957), 1495 states have internal predecessors, (5957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:07,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 5957 transitions. [2022-01-28 14:36:07,670 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 5957 transitions. Word has length 25 [2022-01-28 14:36:07,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:07,671 INFO L470 AbstractCegarLoop]: Abstraction has 1496 states and 5957 transitions. [2022-01-28 14:36:07,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:07,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 5957 transitions. [2022-01-28 14:36:07,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:07,673 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:07,673 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:07,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2022-01-28 14:36:07,673 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:07,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:07,673 INFO L85 PathProgramCache]: Analyzing trace with hash -203779403, now seen corresponding path program 128 times [2022-01-28 14:36:07,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:07,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194454486] [2022-01-28 14:36:07,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:07,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:07,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:07,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:07,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:07,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194454486] [2022-01-28 14:36:07,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194454486] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:07,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:07,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:07,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578849715] [2022-01-28 14:36:07,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:07,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:07,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:07,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:07,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:07,760 INFO L87 Difference]: Start difference. First operand 1496 states and 5957 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:07,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:07,839 INFO L93 Difference]: Finished difference Result 3177 states and 11754 transitions. [2022-01-28 14:36:07,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:07,839 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:07,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:07,846 INFO L225 Difference]: With dead ends: 3177 [2022-01-28 14:36:07,846 INFO L226 Difference]: Without dead ends: 2923 [2022-01-28 14:36:07,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:07,847 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 109 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:07,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 156 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:07,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2022-01-28 14:36:07,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 1464. [2022-01-28 14:36:07,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1463 states have (on average 3.9842788790157213) internal successors, (5829), 1463 states have internal predecessors, (5829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:07,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 5829 transitions. [2022-01-28 14:36:07,878 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 5829 transitions. Word has length 25 [2022-01-28 14:36:07,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:07,878 INFO L470 AbstractCegarLoop]: Abstraction has 1464 states and 5829 transitions. [2022-01-28 14:36:07,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:07,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 5829 transitions. [2022-01-28 14:36:07,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:07,880 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:07,880 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:07,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2022-01-28 14:36:07,880 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:07,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:07,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1793552087, now seen corresponding path program 129 times [2022-01-28 14:36:07,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:07,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269006775] [2022-01-28 14:36:07,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:07,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:07,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:07,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:07,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:07,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269006775] [2022-01-28 14:36:07,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269006775] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:07,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:07,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:07,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765200223] [2022-01-28 14:36:07,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:07,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:07,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:07,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:07,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:07,972 INFO L87 Difference]: Start difference. First operand 1464 states and 5829 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:08,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:08,062 INFO L93 Difference]: Finished difference Result 3063 states and 11348 transitions. [2022-01-28 14:36:08,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:08,062 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:08,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:08,069 INFO L225 Difference]: With dead ends: 3063 [2022-01-28 14:36:08,070 INFO L226 Difference]: Without dead ends: 2904 [2022-01-28 14:36:08,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:08,070 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 112 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:08,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 148 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:08,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2022-01-28 14:36:08,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 1480. [2022-01-28 14:36:08,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1480 states, 1479 states have (on average 3.973630831643002) internal successors, (5877), 1479 states have internal predecessors, (5877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:08,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1480 states to 1480 states and 5877 transitions. [2022-01-28 14:36:08,100 INFO L78 Accepts]: Start accepts. Automaton has 1480 states and 5877 transitions. Word has length 25 [2022-01-28 14:36:08,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:08,100 INFO L470 AbstractCegarLoop]: Abstraction has 1480 states and 5877 transitions. [2022-01-28 14:36:08,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:08,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1480 states and 5877 transitions. [2022-01-28 14:36:08,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:08,102 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:08,102 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:08,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2022-01-28 14:36:08,102 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:08,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:08,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1493117225, now seen corresponding path program 130 times [2022-01-28 14:36:08,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:08,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678219360] [2022-01-28 14:36:08,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:08,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:08,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:08,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:08,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:08,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678219360] [2022-01-28 14:36:08,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678219360] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:08,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:08,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:08,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420874382] [2022-01-28 14:36:08,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:08,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:08,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:08,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:08,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:08,181 INFO L87 Difference]: Start difference. First operand 1480 states and 5877 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:08,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:08,266 INFO L93 Difference]: Finished difference Result 3091 states and 11436 transitions. [2022-01-28 14:36:08,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:08,267 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:08,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:08,273 INFO L225 Difference]: With dead ends: 3091 [2022-01-28 14:36:08,273 INFO L226 Difference]: Without dead ends: 2888 [2022-01-28 14:36:08,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:08,273 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 107 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:08,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 160 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:08,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2022-01-28 14:36:08,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 1464. [2022-01-28 14:36:08,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1463 states have (on average 3.9788106630211892) internal successors, (5821), 1463 states have internal predecessors, (5821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:08,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 5821 transitions. [2022-01-28 14:36:08,301 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 5821 transitions. Word has length 25 [2022-01-28 14:36:08,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:08,301 INFO L470 AbstractCegarLoop]: Abstraction has 1464 states and 5821 transitions. [2022-01-28 14:36:08,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:08,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 5821 transitions. [2022-01-28 14:36:08,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:08,303 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:08,303 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:08,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2022-01-28 14:36:08,303 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:08,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:08,303 INFO L85 PathProgramCache]: Analyzing trace with hash 195129047, now seen corresponding path program 131 times [2022-01-28 14:36:08,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:08,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478638553] [2022-01-28 14:36:08,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:08,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:08,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:08,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:08,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:08,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478638553] [2022-01-28 14:36:08,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478638553] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:08,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:08,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:08,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367177344] [2022-01-28 14:36:08,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:08,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:08,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:08,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:08,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:08,382 INFO L87 Difference]: Start difference. First operand 1464 states and 5821 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:08,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:08,469 INFO L93 Difference]: Finished difference Result 3184 states and 11790 transitions. [2022-01-28 14:36:08,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:08,469 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:08,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:08,476 INFO L225 Difference]: With dead ends: 3184 [2022-01-28 14:36:08,476 INFO L226 Difference]: Without dead ends: 2997 [2022-01-28 14:36:08,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:08,476 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 119 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:08,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 137 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:08,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2997 states. [2022-01-28 14:36:08,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2997 to 1510. [2022-01-28 14:36:08,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1510 states, 1509 states have (on average 3.9615639496355204) internal successors, (5978), 1509 states have internal predecessors, (5978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:08,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1510 states to 1510 states and 5978 transitions. [2022-01-28 14:36:08,505 INFO L78 Accepts]: Start accepts. Automaton has 1510 states and 5978 transitions. Word has length 25 [2022-01-28 14:36:08,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:08,505 INFO L470 AbstractCegarLoop]: Abstraction has 1510 states and 5978 transitions. [2022-01-28 14:36:08,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:08,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1510 states and 5978 transitions. [2022-01-28 14:36:08,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:08,508 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:08,508 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:08,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2022-01-28 14:36:08,508 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:08,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:08,508 INFO L85 PathProgramCache]: Analyzing trace with hash -158010443, now seen corresponding path program 132 times [2022-01-28 14:36:08,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:08,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958708808] [2022-01-28 14:36:08,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:08,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:08,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:08,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:08,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958708808] [2022-01-28 14:36:08,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958708808] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:08,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:08,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:08,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665599238] [2022-01-28 14:36:08,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:08,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:08,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:08,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:08,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:08,600 INFO L87 Difference]: Start difference. First operand 1510 states and 5978 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:08,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:08,695 INFO L93 Difference]: Finished difference Result 3219 states and 11879 transitions. [2022-01-28 14:36:08,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:08,696 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:08,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:08,702 INFO L225 Difference]: With dead ends: 3219 [2022-01-28 14:36:08,702 INFO L226 Difference]: Without dead ends: 2935 [2022-01-28 14:36:08,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:08,702 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 113 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:08,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 144 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:08,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2022-01-28 14:36:08,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 1448. [2022-01-28 14:36:08,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1447 states have (on average 3.984105044920525) internal successors, (5765), 1447 states have internal predecessors, (5765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:08,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5765 transitions. [2022-01-28 14:36:08,729 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5765 transitions. Word has length 25 [2022-01-28 14:36:08,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:08,729 INFO L470 AbstractCegarLoop]: Abstraction has 1448 states and 5765 transitions. [2022-01-28 14:36:08,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:08,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5765 transitions. [2022-01-28 14:36:08,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:08,731 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:08,731 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:08,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2022-01-28 14:36:08,731 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:08,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:08,731 INFO L85 PathProgramCache]: Analyzing trace with hash -833504879, now seen corresponding path program 133 times [2022-01-28 14:36:08,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:08,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100341770] [2022-01-28 14:36:08,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:08,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:08,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:08,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:08,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:08,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100341770] [2022-01-28 14:36:08,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100341770] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:08,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:08,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:08,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859419682] [2022-01-28 14:36:08,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:08,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:08,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:08,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:08,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:08,840 INFO L87 Difference]: Start difference. First operand 1448 states and 5765 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:08,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:08,933 INFO L93 Difference]: Finished difference Result 2992 states and 11083 transitions. [2022-01-28 14:36:08,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:08,933 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:08,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:08,939 INFO L225 Difference]: With dead ends: 2992 [2022-01-28 14:36:08,939 INFO L226 Difference]: Without dead ends: 2833 [2022-01-28 14:36:08,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:08,940 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 128 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:08,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 132 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:08,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2833 states. [2022-01-28 14:36:08,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2833 to 1472. [2022-01-28 14:36:08,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1471 states have (on average 3.976206662134602) internal successors, (5849), 1471 states have internal predecessors, (5849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:08,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5849 transitions. [2022-01-28 14:36:08,966 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5849 transitions. Word has length 25 [2022-01-28 14:36:08,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:08,966 INFO L470 AbstractCegarLoop]: Abstraction has 1472 states and 5849 transitions. [2022-01-28 14:36:08,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:08,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5849 transitions. [2022-01-28 14:36:08,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:08,968 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:08,968 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:08,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2022-01-28 14:36:08,969 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:08,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:08,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1871527667, now seen corresponding path program 134 times [2022-01-28 14:36:08,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:08,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747673063] [2022-01-28 14:36:08,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:08,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:08,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:09,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:09,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:09,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747673063] [2022-01-28 14:36:09,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747673063] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:09,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:09,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:09,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567601099] [2022-01-28 14:36:09,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:09,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:09,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:09,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:09,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:09,103 INFO L87 Difference]: Start difference. First operand 1472 states and 5849 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:09,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:09,249 INFO L93 Difference]: Finished difference Result 3022 states and 11176 transitions. [2022-01-28 14:36:09,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:09,250 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:09,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:09,257 INFO L225 Difference]: With dead ends: 3022 [2022-01-28 14:36:09,257 INFO L226 Difference]: Without dead ends: 2817 [2022-01-28 14:36:09,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:09,257 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 99 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:09,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 162 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:09,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2022-01-28 14:36:09,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 1456. [2022-01-28 14:36:09,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1455 states have (on average 3.9814432989690722) internal successors, (5793), 1455 states have internal predecessors, (5793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:09,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 5793 transitions. [2022-01-28 14:36:09,287 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 5793 transitions. Word has length 25 [2022-01-28 14:36:09,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:09,287 INFO L470 AbstractCegarLoop]: Abstraction has 1456 states and 5793 transitions. [2022-01-28 14:36:09,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:09,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 5793 transitions. [2022-01-28 14:36:09,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:09,289 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:09,289 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:09,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2022-01-28 14:36:09,290 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:09,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:09,290 INFO L85 PathProgramCache]: Analyzing trace with hash 247557747, now seen corresponding path program 135 times [2022-01-28 14:36:09,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:09,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172294777] [2022-01-28 14:36:09,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:09,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:09,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:09,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:09,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:09,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172294777] [2022-01-28 14:36:09,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172294777] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:09,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:09,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:09,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081827562] [2022-01-28 14:36:09,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:09,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:09,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:09,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:09,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:09,419 INFO L87 Difference]: Start difference. First operand 1456 states and 5793 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:09,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:09,554 INFO L93 Difference]: Finished difference Result 2990 states and 11070 transitions. [2022-01-28 14:36:09,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:09,554 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:09,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:09,560 INFO L225 Difference]: With dead ends: 2990 [2022-01-28 14:36:09,560 INFO L226 Difference]: Without dead ends: 2831 [2022-01-28 14:36:09,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:09,560 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 95 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:09,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 185 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:09,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2831 states. [2022-01-28 14:36:09,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2831 to 1472. [2022-01-28 14:36:09,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1471 states have (on average 3.9707681849082257) internal successors, (5841), 1471 states have internal predecessors, (5841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:09,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5841 transitions. [2022-01-28 14:36:09,587 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5841 transitions. Word has length 25 [2022-01-28 14:36:09,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:09,587 INFO L470 AbstractCegarLoop]: Abstraction has 1472 states and 5841 transitions. [2022-01-28 14:36:09,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:09,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5841 transitions. [2022-01-28 14:36:09,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:09,589 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:09,589 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:09,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2022-01-28 14:36:09,589 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:09,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:09,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1255855731, now seen corresponding path program 136 times [2022-01-28 14:36:09,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:09,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987294194] [2022-01-28 14:36:09,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:09,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:09,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:09,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:09,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:09,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987294194] [2022-01-28 14:36:09,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987294194] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:09,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:09,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:09,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645269952] [2022-01-28 14:36:09,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:09,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:09,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:09,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:09,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:09,675 INFO L87 Difference]: Start difference. First operand 1472 states and 5841 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:09,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:09,773 INFO L93 Difference]: Finished difference Result 3018 states and 11158 transitions. [2022-01-28 14:36:09,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:09,773 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:09,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:09,779 INFO L225 Difference]: With dead ends: 3018 [2022-01-28 14:36:09,779 INFO L226 Difference]: Without dead ends: 2815 [2022-01-28 14:36:09,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:09,780 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 109 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:09,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 147 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:09,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2815 states. [2022-01-28 14:36:09,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2815 to 1456. [2022-01-28 14:36:09,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1455 states have (on average 3.9759450171821307) internal successors, (5785), 1455 states have internal predecessors, (5785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:09,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 5785 transitions. [2022-01-28 14:36:09,805 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 5785 transitions. Word has length 25 [2022-01-28 14:36:09,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:09,805 INFO L470 AbstractCegarLoop]: Abstraction has 1456 states and 5785 transitions. [2022-01-28 14:36:09,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:09,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 5785 transitions. [2022-01-28 14:36:09,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:09,807 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:09,808 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:09,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2022-01-28 14:36:09,808 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:09,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:09,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1664719701, now seen corresponding path program 137 times [2022-01-28 14:36:09,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:09,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135126594] [2022-01-28 14:36:09,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:09,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:09,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:09,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:09,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:09,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135126594] [2022-01-28 14:36:09,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135126594] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:09,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:09,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:09,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295462105] [2022-01-28 14:36:09,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:09,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:09,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:09,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:09,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:09,898 INFO L87 Difference]: Start difference. First operand 1456 states and 5785 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:09,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:09,989 INFO L93 Difference]: Finished difference Result 3064 states and 11339 transitions. [2022-01-28 14:36:09,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:09,989 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:09,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:09,995 INFO L225 Difference]: With dead ends: 3064 [2022-01-28 14:36:09,995 INFO L226 Difference]: Without dead ends: 2875 [2022-01-28 14:36:09,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:09,995 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 106 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:09,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 144 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:09,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2875 states. [2022-01-28 14:36:10,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2875 to 1486. [2022-01-28 14:36:10,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1485 states have (on average 3.958249158249158) internal successors, (5878), 1485 states have internal predecessors, (5878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:10,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5878 transitions. [2022-01-28 14:36:10,024 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5878 transitions. Word has length 25 [2022-01-28 14:36:10,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:10,024 INFO L470 AbstractCegarLoop]: Abstraction has 1486 states and 5878 transitions. [2022-01-28 14:36:10,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:10,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5878 transitions. [2022-01-28 14:36:10,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:10,026 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:10,026 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:10,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2022-01-28 14:36:10,026 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:10,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:10,027 INFO L85 PathProgramCache]: Analyzing trace with hash -378617293, now seen corresponding path program 138 times [2022-01-28 14:36:10,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:10,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190047307] [2022-01-28 14:36:10,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:10,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:10,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:10,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:10,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:10,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190047307] [2022-01-28 14:36:10,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190047307] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:10,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:10,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:10,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663889789] [2022-01-28 14:36:10,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:10,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:10,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:10,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:10,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:10,118 INFO L87 Difference]: Start difference. First operand 1486 states and 5878 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:10,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:10,210 INFO L93 Difference]: Finished difference Result 3062 states and 11304 transitions. [2022-01-28 14:36:10,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:10,210 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:10,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:10,216 INFO L225 Difference]: With dead ends: 3062 [2022-01-28 14:36:10,216 INFO L226 Difference]: Without dead ends: 2837 [2022-01-28 14:36:10,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:10,216 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 103 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:10,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 156 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:10,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2837 states. [2022-01-28 14:36:10,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2837 to 1448. [2022-01-28 14:36:10,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1447 states have (on average 3.9813407049067036) internal successors, (5761), 1447 states have internal predecessors, (5761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:10,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5761 transitions. [2022-01-28 14:36:10,242 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5761 transitions. Word has length 25 [2022-01-28 14:36:10,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:10,242 INFO L470 AbstractCegarLoop]: Abstraction has 1448 states and 5761 transitions. [2022-01-28 14:36:10,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:10,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5761 transitions. [2022-01-28 14:36:10,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:10,244 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:10,244 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:10,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2022-01-28 14:36:10,244 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:10,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:10,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1725034313, now seen corresponding path program 139 times [2022-01-28 14:36:10,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:10,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457703580] [2022-01-28 14:36:10,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:10,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:10,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:10,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:10,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:10,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457703580] [2022-01-28 14:36:10,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457703580] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:10,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:10,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:10,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196868077] [2022-01-28 14:36:10,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:10,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:10,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:10,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:10,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:10,346 INFO L87 Difference]: Start difference. First operand 1448 states and 5761 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:10,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:10,479 INFO L93 Difference]: Finished difference Result 3235 states and 11988 transitions. [2022-01-28 14:36:10,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:10,479 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:10,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:10,487 INFO L225 Difference]: With dead ends: 3235 [2022-01-28 14:36:10,487 INFO L226 Difference]: Without dead ends: 3046 [2022-01-28 14:36:10,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:10,487 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 120 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:10,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 158 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:10,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3046 states. [2022-01-28 14:36:10,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3046 to 1517. [2022-01-28 14:36:10,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1517 states, 1516 states have (on average 3.962401055408971) internal successors, (6007), 1516 states have internal predecessors, (6007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:10,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1517 states to 1517 states and 6007 transitions. [2022-01-28 14:36:10,525 INFO L78 Accepts]: Start accepts. Automaton has 1517 states and 6007 transitions. Word has length 25 [2022-01-28 14:36:10,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:10,525 INFO L470 AbstractCegarLoop]: Abstraction has 1517 states and 6007 transitions. [2022-01-28 14:36:10,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:10,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1517 states and 6007 transitions. [2022-01-28 14:36:10,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:10,528 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:10,529 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:10,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2022-01-28 14:36:10,529 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:10,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:10,529 INFO L85 PathProgramCache]: Analyzing trace with hash 526595989, now seen corresponding path program 140 times [2022-01-28 14:36:10,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:10,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881741420] [2022-01-28 14:36:10,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:10,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:10,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:10,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:10,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881741420] [2022-01-28 14:36:10,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881741420] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:10,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:10,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:10,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514560309] [2022-01-28 14:36:10,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:10,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:10,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:10,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:10,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:10,660 INFO L87 Difference]: Start difference. First operand 1517 states and 6007 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:10,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:10,783 INFO L93 Difference]: Finished difference Result 3233 states and 11953 transitions. [2022-01-28 14:36:10,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:10,783 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:10,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:10,791 INFO L225 Difference]: With dead ends: 3233 [2022-01-28 14:36:10,791 INFO L226 Difference]: Without dead ends: 3016 [2022-01-28 14:36:10,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:10,791 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 124 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:10,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 145 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:10,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3016 states. [2022-01-28 14:36:10,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3016 to 1487. [2022-01-28 14:36:10,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1487 states, 1486 states have (on average 3.9697173620457606) internal successors, (5899), 1486 states have internal predecessors, (5899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:10,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 5899 transitions. [2022-01-28 14:36:10,824 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 5899 transitions. Word has length 25 [2022-01-28 14:36:10,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:10,825 INFO L470 AbstractCegarLoop]: Abstraction has 1487 states and 5899 transitions. [2022-01-28 14:36:10,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:10,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 5899 transitions. [2022-01-28 14:36:10,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:10,827 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:10,827 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:10,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2022-01-28 14:36:10,827 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:10,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:10,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1789667819, now seen corresponding path program 141 times [2022-01-28 14:36:10,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:10,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321021999] [2022-01-28 14:36:10,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:10,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:10,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:10,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:10,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:10,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321021999] [2022-01-28 14:36:10,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321021999] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:10,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:10,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:10,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263815470] [2022-01-28 14:36:10,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:10,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:10,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:10,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:10,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:10,916 INFO L87 Difference]: Start difference. First operand 1487 states and 5899 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:11,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:11,029 INFO L93 Difference]: Finished difference Result 3303 states and 12207 transitions. [2022-01-28 14:36:11,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:11,029 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:11,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:11,037 INFO L225 Difference]: With dead ends: 3303 [2022-01-28 14:36:11,038 INFO L226 Difference]: Without dead ends: 3114 [2022-01-28 14:36:11,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:11,038 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 115 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:11,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 160 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:11,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3114 states. [2022-01-28 14:36:11,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3114 to 1550. [2022-01-28 14:36:11,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1550 states, 1549 states have (on average 3.9418979987088445) internal successors, (6106), 1549 states have internal predecessors, (6106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:11,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1550 states to 1550 states and 6106 transitions. [2022-01-28 14:36:11,076 INFO L78 Accepts]: Start accepts. Automaton has 1550 states and 6106 transitions. Word has length 25 [2022-01-28 14:36:11,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:11,076 INFO L470 AbstractCegarLoop]: Abstraction has 1550 states and 6106 transitions. [2022-01-28 14:36:11,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:11,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1550 states and 6106 transitions. [2022-01-28 14:36:11,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:11,079 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:11,079 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:11,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2022-01-28 14:36:11,079 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:11,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:11,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1949511189, now seen corresponding path program 142 times [2022-01-28 14:36:11,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:11,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985391041] [2022-01-28 14:36:11,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:11,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:11,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:11,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:11,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:11,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985391041] [2022-01-28 14:36:11,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985391041] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:11,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:11,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:11,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729121502] [2022-01-28 14:36:11,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:11,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:11,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:11,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:11,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:11,162 INFO L87 Difference]: Start difference. First operand 1550 states and 6106 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:11,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:11,254 INFO L93 Difference]: Finished difference Result 3336 states and 12290 transitions. [2022-01-28 14:36:11,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:11,254 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:11,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:11,261 INFO L225 Difference]: With dead ends: 3336 [2022-01-28 14:36:11,261 INFO L226 Difference]: Without dead ends: 3051 [2022-01-28 14:36:11,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:11,262 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 103 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:11,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 169 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:11,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3051 states. [2022-01-28 14:36:11,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3051 to 1487. [2022-01-28 14:36:11,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1487 states, 1486 states have (on average 3.9488559892328396) internal successors, (5868), 1486 states have internal predecessors, (5868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:11,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 5868 transitions. [2022-01-28 14:36:11,294 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 5868 transitions. Word has length 25 [2022-01-28 14:36:11,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:11,294 INFO L470 AbstractCegarLoop]: Abstraction has 1487 states and 5868 transitions. [2022-01-28 14:36:11,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:11,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 5868 transitions. [2022-01-28 14:36:11,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:11,297 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:11,297 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:11,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2022-01-28 14:36:11,297 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:11,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:11,297 INFO L85 PathProgramCache]: Analyzing trace with hash -807320205, now seen corresponding path program 143 times [2022-01-28 14:36:11,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:11,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163327790] [2022-01-28 14:36:11,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:11,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:11,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:11,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:11,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:11,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163327790] [2022-01-28 14:36:11,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163327790] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:11,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:11,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:11,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799340309] [2022-01-28 14:36:11,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:11,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:11,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:11,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:11,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:11,392 INFO L87 Difference]: Start difference. First operand 1487 states and 5868 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:11,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:11,478 INFO L93 Difference]: Finished difference Result 3282 states and 12115 transitions. [2022-01-28 14:36:11,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:11,478 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:11,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:11,485 INFO L225 Difference]: With dead ends: 3282 [2022-01-28 14:36:11,485 INFO L226 Difference]: Without dead ends: 3095 [2022-01-28 14:36:11,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:11,486 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 112 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:11,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 151 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:11,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3095 states. [2022-01-28 14:36:11,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3095 to 1533. [2022-01-28 14:36:11,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1533 states, 1532 states have (on average 3.9327676240208875) internal successors, (6025), 1532 states have internal predecessors, (6025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:11,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1533 states to 1533 states and 6025 transitions. [2022-01-28 14:36:11,519 INFO L78 Accepts]: Start accepts. Automaton has 1533 states and 6025 transitions. Word has length 25 [2022-01-28 14:36:11,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:11,519 INFO L470 AbstractCegarLoop]: Abstraction has 1533 states and 6025 transitions. [2022-01-28 14:36:11,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:11,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1533 states and 6025 transitions. [2022-01-28 14:36:11,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:11,522 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:11,522 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:11,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2022-01-28 14:36:11,522 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:11,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:11,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1130257493, now seen corresponding path program 144 times [2022-01-28 14:36:11,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:11,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119938194] [2022-01-28 14:36:11,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:11,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:11,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:11,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:11,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119938194] [2022-01-28 14:36:11,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119938194] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:11,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:11,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:11,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023461870] [2022-01-28 14:36:11,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:11,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:11,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:11,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:11,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:11,608 INFO L87 Difference]: Start difference. First operand 1533 states and 6025 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:11,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:11,695 INFO L93 Difference]: Finished difference Result 3317 states and 12204 transitions. [2022-01-28 14:36:11,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:11,695 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:11,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:11,703 INFO L225 Difference]: With dead ends: 3317 [2022-01-28 14:36:11,703 INFO L226 Difference]: Without dead ends: 2994 [2022-01-28 14:36:11,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:11,703 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 100 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:11,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 154 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:11,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2022-01-28 14:36:11,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 1432. [2022-01-28 14:36:11,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1431 states have (on average 3.989517819706499) internal successors, (5709), 1431 states have internal predecessors, (5709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:11,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 5709 transitions. [2022-01-28 14:36:11,739 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 5709 transitions. Word has length 25 [2022-01-28 14:36:11,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:11,739 INFO L470 AbstractCegarLoop]: Abstraction has 1432 states and 5709 transitions. [2022-01-28 14:36:11,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:11,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 5709 transitions. [2022-01-28 14:36:11,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:11,742 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:11,742 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:11,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2022-01-28 14:36:11,742 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:11,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:11,742 INFO L85 PathProgramCache]: Analyzing trace with hash -2138101417, now seen corresponding path program 145 times [2022-01-28 14:36:11,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:11,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587492938] [2022-01-28 14:36:11,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:11,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:11,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:11,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:11,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:11,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587492938] [2022-01-28 14:36:11,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587492938] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:11,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:11,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:11,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934162240] [2022-01-28 14:36:11,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:11,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:11,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:11,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:11,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:11,822 INFO L87 Difference]: Start difference. First operand 1432 states and 5709 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:11,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:11,903 INFO L93 Difference]: Finished difference Result 3078 states and 11404 transitions. [2022-01-28 14:36:11,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:11,906 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:11,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:11,913 INFO L225 Difference]: With dead ends: 3078 [2022-01-28 14:36:11,913 INFO L226 Difference]: Without dead ends: 2919 [2022-01-28 14:36:11,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:11,914 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 109 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:11,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 148 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:11,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2919 states. [2022-01-28 14:36:11,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2919 to 1500. [2022-01-28 14:36:11,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1500 states, 1499 states have (on average 3.9873248832555035) internal successors, (5977), 1499 states have internal predecessors, (5977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:11,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 5977 transitions. [2022-01-28 14:36:11,949 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 5977 transitions. Word has length 25 [2022-01-28 14:36:11,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:11,949 INFO L470 AbstractCegarLoop]: Abstraction has 1500 states and 5977 transitions. [2022-01-28 14:36:11,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:11,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 5977 transitions. [2022-01-28 14:36:11,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:11,953 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:11,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:11,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2022-01-28 14:36:11,953 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:11,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:11,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1148567895, now seen corresponding path program 146 times [2022-01-28 14:36:11,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:11,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546792827] [2022-01-28 14:36:11,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:11,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:12,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:12,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:12,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546792827] [2022-01-28 14:36:12,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546792827] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:12,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:12,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:12,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086276625] [2022-01-28 14:36:12,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:12,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:12,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:12,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:12,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:12,041 INFO L87 Difference]: Start difference. First operand 1500 states and 5977 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:12,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:12,128 INFO L93 Difference]: Finished difference Result 3141 states and 11611 transitions. [2022-01-28 14:36:12,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:12,128 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:12,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:12,136 INFO L225 Difference]: With dead ends: 3141 [2022-01-28 14:36:12,136 INFO L226 Difference]: Without dead ends: 2887 [2022-01-28 14:36:12,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:12,137 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 107 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:12,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 156 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:12,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2022-01-28 14:36:12,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 1468. [2022-01-28 14:36:12,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1467 states have (on average 3.9870483980913427) internal successors, (5849), 1467 states have internal predecessors, (5849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:12,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 5849 transitions. [2022-01-28 14:36:12,181 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 5849 transitions. Word has length 25 [2022-01-28 14:36:12,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:12,181 INFO L470 AbstractCegarLoop]: Abstraction has 1468 states and 5849 transitions. [2022-01-28 14:36:12,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:12,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 5849 transitions. [2022-01-28 14:36:12,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:12,185 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:12,185 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:12,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2022-01-28 14:36:12,185 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:12,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:12,185 INFO L85 PathProgramCache]: Analyzing trace with hash -2099486733, now seen corresponding path program 147 times [2022-01-28 14:36:12,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:12,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164521579] [2022-01-28 14:36:12,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:12,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:12,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:12,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:12,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164521579] [2022-01-28 14:36:12,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164521579] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:12,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:12,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:12,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864133810] [2022-01-28 14:36:12,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:12,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:12,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:12,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:12,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:12,313 INFO L87 Difference]: Start difference. First operand 1468 states and 5849 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:12,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:12,392 INFO L93 Difference]: Finished difference Result 3029 states and 11210 transitions. [2022-01-28 14:36:12,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:12,392 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:12,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:12,399 INFO L225 Difference]: With dead ends: 3029 [2022-01-28 14:36:12,399 INFO L226 Difference]: Without dead ends: 2870 [2022-01-28 14:36:12,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:12,400 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 113 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:12,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 146 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:12,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2870 states. [2022-01-28 14:36:12,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2870 to 1484. [2022-01-28 14:36:12,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1484 states, 1483 states have (on average 3.9763991908294) internal successors, (5897), 1483 states have internal predecessors, (5897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:12,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1484 states to 1484 states and 5897 transitions. [2022-01-28 14:36:12,433 INFO L78 Accepts]: Start accepts. Automaton has 1484 states and 5897 transitions. Word has length 25 [2022-01-28 14:36:12,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:12,434 INFO L470 AbstractCegarLoop]: Abstraction has 1484 states and 5897 transitions. [2022-01-28 14:36:12,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:12,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1484 states and 5897 transitions. [2022-01-28 14:36:12,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:12,437 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:12,437 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:12,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2022-01-28 14:36:12,437 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:12,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:12,438 INFO L85 PathProgramCache]: Analyzing trace with hash 605545813, now seen corresponding path program 148 times [2022-01-28 14:36:12,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:12,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956294434] [2022-01-28 14:36:12,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:12,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:12,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:12,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:12,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:12,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956294434] [2022-01-28 14:36:12,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956294434] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:12,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:12,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:12,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280676470] [2022-01-28 14:36:12,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:12,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:12,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:12,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:12,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:12,546 INFO L87 Difference]: Start difference. First operand 1484 states and 5897 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:12,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:12,633 INFO L93 Difference]: Finished difference Result 3059 states and 11303 transitions. [2022-01-28 14:36:12,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:12,633 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:12,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:12,640 INFO L225 Difference]: With dead ends: 3059 [2022-01-28 14:36:12,640 INFO L226 Difference]: Without dead ends: 2854 [2022-01-28 14:36:12,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:12,641 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 100 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:12,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 152 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:12,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2854 states. [2022-01-28 14:36:12,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2854 to 1468. [2022-01-28 14:36:12,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1467 states have (on average 3.98159509202454) internal successors, (5841), 1467 states have internal predecessors, (5841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:12,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 5841 transitions. [2022-01-28 14:36:12,673 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 5841 transitions. Word has length 25 [2022-01-28 14:36:12,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:12,673 INFO L470 AbstractCegarLoop]: Abstraction has 1468 states and 5841 transitions. [2022-01-28 14:36:12,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:12,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 5841 transitions. [2022-01-28 14:36:12,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:12,675 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:12,675 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:12,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2022-01-28 14:36:12,675 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:12,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:12,676 INFO L85 PathProgramCache]: Analyzing trace with hash -32617673, now seen corresponding path program 149 times [2022-01-28 14:36:12,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:12,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917644282] [2022-01-28 14:36:12,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:12,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:12,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:12,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:12,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:12,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917644282] [2022-01-28 14:36:12,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917644282] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:12,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:12,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:12,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943168844] [2022-01-28 14:36:12,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:12,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:12,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:12,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:12,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:12,759 INFO L87 Difference]: Start difference. First operand 1468 states and 5841 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:12,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:12,856 INFO L93 Difference]: Finished difference Result 3169 states and 11708 transitions. [2022-01-28 14:36:12,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:12,856 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:12,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:12,864 INFO L225 Difference]: With dead ends: 3169 [2022-01-28 14:36:12,864 INFO L226 Difference]: Without dead ends: 2980 [2022-01-28 14:36:12,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:12,865 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 94 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:12,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 176 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:12,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2980 states. [2022-01-28 14:36:12,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2980 to 1531. [2022-01-28 14:36:12,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1531 states, 1530 states have (on average 3.9529411764705884) internal successors, (6048), 1530 states have internal predecessors, (6048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:12,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 6048 transitions. [2022-01-28 14:36:12,902 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 6048 transitions. Word has length 25 [2022-01-28 14:36:12,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:12,902 INFO L470 AbstractCegarLoop]: Abstraction has 1531 states and 6048 transitions. [2022-01-28 14:36:12,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:12,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 6048 transitions. [2022-01-28 14:36:12,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:12,904 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:12,904 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:12,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2022-01-28 14:36:12,905 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:12,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:12,905 INFO L85 PathProgramCache]: Analyzing trace with hash 265435285, now seen corresponding path program 150 times [2022-01-28 14:36:12,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:12,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60756785] [2022-01-28 14:36:12,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:12,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:12,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:13,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:13,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:13,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60756785] [2022-01-28 14:36:13,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60756785] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:13,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:13,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:13,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160408989] [2022-01-28 14:36:13,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:13,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:13,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:13,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:13,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:13,041 INFO L87 Difference]: Start difference. First operand 1531 states and 6048 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:13,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:13,161 INFO L93 Difference]: Finished difference Result 3202 states and 11791 transitions. [2022-01-28 14:36:13,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:13,161 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:13,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:13,168 INFO L225 Difference]: With dead ends: 3202 [2022-01-28 14:36:13,168 INFO L226 Difference]: Without dead ends: 2893 [2022-01-28 14:36:13,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:13,169 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 96 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:13,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 184 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:13,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2022-01-28 14:36:13,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 1444. [2022-01-28 14:36:13,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 3.986832986832987) internal successors, (5753), 1443 states have internal predecessors, (5753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:13,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 5753 transitions. [2022-01-28 14:36:13,201 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 5753 transitions. Word has length 25 [2022-01-28 14:36:13,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:13,201 INFO L470 AbstractCegarLoop]: Abstraction has 1444 states and 5753 transitions. [2022-01-28 14:36:13,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:13,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 5753 transitions. [2022-01-28 14:36:13,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:13,203 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:13,203 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:13,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2022-01-28 14:36:13,203 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:13,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:13,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1108663691, now seen corresponding path program 151 times [2022-01-28 14:36:13,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:13,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789145480] [2022-01-28 14:36:13,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:13,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:13,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:13,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:13,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:13,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789145480] [2022-01-28 14:36:13,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789145480] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:13,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:13,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:13,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377819459] [2022-01-28 14:36:13,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:13,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:13,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:13,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:13,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:13,292 INFO L87 Difference]: Start difference. First operand 1444 states and 5753 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:13,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:13,369 INFO L93 Difference]: Finished difference Result 3001 states and 11117 transitions. [2022-01-28 14:36:13,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:13,369 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:13,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:13,376 INFO L225 Difference]: With dead ends: 3001 [2022-01-28 14:36:13,376 INFO L226 Difference]: Without dead ends: 2842 [2022-01-28 14:36:13,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:13,377 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 116 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:13,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 141 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:13,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2022-01-28 14:36:13,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1492. [2022-01-28 14:36:13,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1492 states, 1491 states have (on average 3.9818913480885314) internal successors, (5937), 1491 states have internal predecessors, (5937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:13,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 5937 transitions. [2022-01-28 14:36:13,410 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 5937 transitions. Word has length 25 [2022-01-28 14:36:13,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:13,410 INFO L470 AbstractCegarLoop]: Abstraction has 1492 states and 5937 transitions. [2022-01-28 14:36:13,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:13,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 5937 transitions. [2022-01-28 14:36:13,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:13,413 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:13,413 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:13,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2022-01-28 14:36:13,413 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:13,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:13,413 INFO L85 PathProgramCache]: Analyzing trace with hash -2116961675, now seen corresponding path program 152 times [2022-01-28 14:36:13,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:13,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606619701] [2022-01-28 14:36:13,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:13,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:13,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:13,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:13,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:13,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606619701] [2022-01-28 14:36:13,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606619701] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:13,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:13,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:13,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460368276] [2022-01-28 14:36:13,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:13,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:13,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:13,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:13,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:13,502 INFO L87 Difference]: Start difference. First operand 1492 states and 5937 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:13,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:13,587 INFO L93 Difference]: Finished difference Result 3064 states and 11324 transitions. [2022-01-28 14:36:13,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:13,587 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:13,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:13,594 INFO L225 Difference]: With dead ends: 3064 [2022-01-28 14:36:13,594 INFO L226 Difference]: Without dead ends: 2810 [2022-01-28 14:36:13,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:13,595 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 110 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:13,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 147 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:13,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2810 states. [2022-01-28 14:36:13,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2810 to 1460. [2022-01-28 14:36:13,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1459 states have (on average 3.9814941740918437) internal successors, (5809), 1459 states have internal predecessors, (5809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:13,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 5809 transitions. [2022-01-28 14:36:13,629 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 5809 transitions. Word has length 25 [2022-01-28 14:36:13,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:13,629 INFO L470 AbstractCegarLoop]: Abstraction has 1460 states and 5809 transitions. [2022-01-28 14:36:13,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:13,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 5809 transitions. [2022-01-28 14:36:13,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:13,632 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:13,632 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:13,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2022-01-28 14:36:13,632 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:13,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:13,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1969882519, now seen corresponding path program 153 times [2022-01-28 14:36:13,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:13,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464186892] [2022-01-28 14:36:13,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:13,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:13,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:13,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:13,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:13,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464186892] [2022-01-28 14:36:13,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464186892] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:13,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:13,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:13,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333011497] [2022-01-28 14:36:13,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:13,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:13,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:13,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:13,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:13,789 INFO L87 Difference]: Start difference. First operand 1460 states and 5809 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:13,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:13,888 INFO L93 Difference]: Finished difference Result 2906 states and 10766 transitions. [2022-01-28 14:36:13,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:13,888 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:13,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:13,895 INFO L225 Difference]: With dead ends: 2906 [2022-01-28 14:36:13,895 INFO L226 Difference]: Without dead ends: 2747 [2022-01-28 14:36:13,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:13,895 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 113 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:13,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 148 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:13,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2747 states. [2022-01-28 14:36:13,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2747 to 1476. [2022-01-28 14:36:13,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1475 states have (on average 3.9708474576271184) internal successors, (5857), 1475 states have internal predecessors, (5857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:13,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 5857 transitions. [2022-01-28 14:36:13,925 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 5857 transitions. Word has length 25 [2022-01-28 14:36:13,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:13,925 INFO L470 AbstractCegarLoop]: Abstraction has 1476 states and 5857 transitions. [2022-01-28 14:36:13,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:13,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 5857 transitions. [2022-01-28 14:36:13,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:13,927 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:13,927 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:13,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2022-01-28 14:36:13,928 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:13,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:13,928 INFO L85 PathProgramCache]: Analyzing trace with hash 27610519, now seen corresponding path program 154 times [2022-01-28 14:36:13,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:13,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603144678] [2022-01-28 14:36:13,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:13,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:14,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:14,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:14,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603144678] [2022-01-28 14:36:14,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603144678] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:14,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:14,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:14,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827451278] [2022-01-28 14:36:14,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:14,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:14,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:14,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:14,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:14,048 INFO L87 Difference]: Start difference. First operand 1476 states and 5857 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:14,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:14,137 INFO L93 Difference]: Finished difference Result 2794 states and 10429 transitions. [2022-01-28 14:36:14,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:14,137 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:14,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:14,144 INFO L225 Difference]: With dead ends: 2794 [2022-01-28 14:36:14,144 INFO L226 Difference]: Without dead ends: 2603 [2022-01-28 14:36:14,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:14,145 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 113 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:14,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 129 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:14,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2603 states. [2022-01-28 14:36:14,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2603 to 1460. [2022-01-28 14:36:14,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1459 states have (on average 3.976010966415353) internal successors, (5801), 1459 states have internal predecessors, (5801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:14,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 5801 transitions. [2022-01-28 14:36:14,187 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 5801 transitions. Word has length 25 [2022-01-28 14:36:14,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:14,187 INFO L470 AbstractCegarLoop]: Abstraction has 1460 states and 5801 transitions. [2022-01-28 14:36:14,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:14,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 5801 transitions. [2022-01-28 14:36:14,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:14,190 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:14,190 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:14,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2022-01-28 14:36:14,190 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:14,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:14,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1715856791, now seen corresponding path program 155 times [2022-01-28 14:36:14,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:14,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203556031] [2022-01-28 14:36:14,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:14,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:14,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:14,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:14,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:14,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203556031] [2022-01-28 14:36:14,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203556031] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:14,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:14,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:14,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825313424] [2022-01-28 14:36:14,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:14,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:14,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:14,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:14,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:14,346 INFO L87 Difference]: Start difference. First operand 1460 states and 5801 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:14,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:14,458 INFO L93 Difference]: Finished difference Result 3041 states and 11257 transitions. [2022-01-28 14:36:14,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:14,458 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:14,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:14,465 INFO L225 Difference]: With dead ends: 3041 [2022-01-28 14:36:14,465 INFO L226 Difference]: Without dead ends: 2866 [2022-01-28 14:36:14,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:14,466 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 99 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:14,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 158 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:14,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2866 states. [2022-01-28 14:36:14,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2866 to 1500. [2022-01-28 14:36:14,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1500 states, 1499 states have (on average 3.963308872581721) internal successors, (5941), 1499 states have internal predecessors, (5941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:14,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 5941 transitions. [2022-01-28 14:36:14,504 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 5941 transitions. Word has length 25 [2022-01-28 14:36:14,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:14,504 INFO L470 AbstractCegarLoop]: Abstraction has 1500 states and 5941 transitions. [2022-01-28 14:36:14,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:14,504 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 5941 transitions. [2022-01-28 14:36:14,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:14,507 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:14,507 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:14,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2022-01-28 14:36:14,507 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:14,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:14,508 INFO L85 PathProgramCache]: Analyzing trace with hash 60332405, now seen corresponding path program 156 times [2022-01-28 14:36:14,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:14,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771433160] [2022-01-28 14:36:14,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:14,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:14,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:14,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:14,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:14,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771433160] [2022-01-28 14:36:14,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771433160] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:14,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:14,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:14,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400517283] [2022-01-28 14:36:14,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:14,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:14,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:14,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:14,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:14,609 INFO L87 Difference]: Start difference. First operand 1500 states and 5941 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:14,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:14,685 INFO L93 Difference]: Finished difference Result 2993 states and 11057 transitions. [2022-01-28 14:36:14,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:14,685 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:14,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:14,692 INFO L225 Difference]: With dead ends: 2993 [2022-01-28 14:36:14,692 INFO L226 Difference]: Without dead ends: 2715 [2022-01-28 14:36:14,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:14,692 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 102 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:14,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 143 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:14,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2715 states. [2022-01-28 14:36:14,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2715 to 1444. [2022-01-28 14:36:14,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 3.9812889812889813) internal successors, (5745), 1443 states have internal predecessors, (5745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:14,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 5745 transitions. [2022-01-28 14:36:14,724 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 5745 transitions. Word has length 25 [2022-01-28 14:36:14,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:14,724 INFO L470 AbstractCegarLoop]: Abstraction has 1444 states and 5745 transitions. [2022-01-28 14:36:14,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:14,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 5745 transitions. [2022-01-28 14:36:14,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:14,726 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:14,726 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:14,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2022-01-28 14:36:14,727 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:14,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:14,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1918566737, now seen corresponding path program 157 times [2022-01-28 14:36:14,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:14,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435459309] [2022-01-28 14:36:14,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:14,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:14,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:14,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:14,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:14,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435459309] [2022-01-28 14:36:14,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435459309] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:14,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:14,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:14,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602457083] [2022-01-28 14:36:14,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:14,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:14,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:14,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:14,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:14,811 INFO L87 Difference]: Start difference. First operand 1444 states and 5745 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:14,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:14,898 INFO L93 Difference]: Finished difference Result 2895 states and 10717 transitions. [2022-01-28 14:36:14,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:14,898 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:14,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:14,904 INFO L225 Difference]: With dead ends: 2895 [2022-01-28 14:36:14,905 INFO L226 Difference]: Without dead ends: 2736 [2022-01-28 14:36:14,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:14,905 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 99 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:14,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 181 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:14,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2736 states. [2022-01-28 14:36:14,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2736 to 1468. [2022-01-28 14:36:14,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1467 states have (on average 3.9734151329243352) internal successors, (5829), 1467 states have internal predecessors, (5829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:14,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 5829 transitions. [2022-01-28 14:36:14,937 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 5829 transitions. Word has length 25 [2022-01-28 14:36:14,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:14,937 INFO L470 AbstractCegarLoop]: Abstraction has 1468 states and 5829 transitions. [2022-01-28 14:36:14,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:14,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 5829 transitions. [2022-01-28 14:36:14,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:14,939 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:14,939 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:14,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2022-01-28 14:36:14,940 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:14,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:14,940 INFO L85 PathProgramCache]: Analyzing trace with hash 328631987, now seen corresponding path program 158 times [2022-01-28 14:36:14,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:14,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051443177] [2022-01-28 14:36:14,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:14,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:14,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:15,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:15,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:15,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051443177] [2022-01-28 14:36:15,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051443177] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:15,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:15,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:15,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967004530] [2022-01-28 14:36:15,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:15,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:15,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:15,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:15,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:15,067 INFO L87 Difference]: Start difference. First operand 1468 states and 5829 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:15,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:15,187 INFO L93 Difference]: Finished difference Result 2925 states and 10810 transitions. [2022-01-28 14:36:15,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:15,187 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:15,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:15,194 INFO L225 Difference]: With dead ends: 2925 [2022-01-28 14:36:15,194 INFO L226 Difference]: Without dead ends: 2720 [2022-01-28 14:36:15,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:15,194 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 101 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:15,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 161 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:15,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2720 states. [2022-01-28 14:36:15,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2720 to 1452. [2022-01-28 14:36:15,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1451 states have (on average 3.9786354238456236) internal successors, (5773), 1451 states have internal predecessors, (5773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:15,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 5773 transitions. [2022-01-28 14:36:15,223 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 5773 transitions. Word has length 25 [2022-01-28 14:36:15,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:15,223 INFO L470 AbstractCegarLoop]: Abstraction has 1452 states and 5773 transitions. [2022-01-28 14:36:15,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:15,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 5773 transitions. [2022-01-28 14:36:15,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:15,225 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:15,225 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:15,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2022-01-28 14:36:15,225 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:15,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:15,226 INFO L85 PathProgramCache]: Analyzing trace with hash 423888179, now seen corresponding path program 159 times [2022-01-28 14:36:15,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:15,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785413941] [2022-01-28 14:36:15,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:15,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:15,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:15,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:15,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:15,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785413941] [2022-01-28 14:36:15,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785413941] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:15,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:15,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:15,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850614728] [2022-01-28 14:36:15,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:15,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:15,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:15,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:15,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:15,336 INFO L87 Difference]: Start difference. First operand 1452 states and 5773 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:15,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:15,429 INFO L93 Difference]: Finished difference Result 2849 states and 10552 transitions. [2022-01-28 14:36:15,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:15,429 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:15,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:15,435 INFO L225 Difference]: With dead ends: 2849 [2022-01-28 14:36:15,436 INFO L226 Difference]: Without dead ends: 2690 [2022-01-28 14:36:15,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:15,436 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 114 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:15,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 154 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:15,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2690 states. [2022-01-28 14:36:15,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2690 to 1468. [2022-01-28 14:36:15,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1467 states have (on average 3.9679618268575325) internal successors, (5821), 1467 states have internal predecessors, (5821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:15,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 5821 transitions. [2022-01-28 14:36:15,462 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 5821 transitions. Word has length 25 [2022-01-28 14:36:15,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:15,463 INFO L470 AbstractCegarLoop]: Abstraction has 1468 states and 5821 transitions. [2022-01-28 14:36:15,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:15,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 5821 transitions. [2022-01-28 14:36:15,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:15,465 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:15,465 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:15,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2022-01-28 14:36:15,465 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:15,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:15,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1518383821, now seen corresponding path program 160 times [2022-01-28 14:36:15,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:15,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585695244] [2022-01-28 14:36:15,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:15,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:15,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:15,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:15,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:15,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585695244] [2022-01-28 14:36:15,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585695244] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:15,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:15,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:15,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194922541] [2022-01-28 14:36:15,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:15,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:15,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:15,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:15,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:15,558 INFO L87 Difference]: Start difference. First operand 1468 states and 5821 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:15,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:15,662 INFO L93 Difference]: Finished difference Result 2737 states and 10215 transitions. [2022-01-28 14:36:15,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:15,662 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:15,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:15,668 INFO L225 Difference]: With dead ends: 2737 [2022-01-28 14:36:15,668 INFO L226 Difference]: Without dead ends: 2546 [2022-01-28 14:36:15,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:15,669 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 86 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:15,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 183 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:15,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2022-01-28 14:36:15,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 1452. [2022-01-28 14:36:15,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1451 states have (on average 3.9731219848380426) internal successors, (5765), 1451 states have internal predecessors, (5765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:15,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 5765 transitions. [2022-01-28 14:36:15,697 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 5765 transitions. Word has length 25 [2022-01-28 14:36:15,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:15,697 INFO L470 AbstractCegarLoop]: Abstraction has 1452 states and 5765 transitions. [2022-01-28 14:36:15,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:15,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 5765 transitions. [2022-01-28 14:36:15,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:15,699 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:15,699 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:15,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2022-01-28 14:36:15,700 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:15,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:15,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1841050133, now seen corresponding path program 161 times [2022-01-28 14:36:15,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:15,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097967468] [2022-01-28 14:36:15,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:15,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:15,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:15,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:15,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:15,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097967468] [2022-01-28 14:36:15,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097967468] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:15,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:15,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:15,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937291558] [2022-01-28 14:36:15,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:15,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:15,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:15,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:15,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:15,807 INFO L87 Difference]: Start difference. First operand 1452 states and 5765 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:15,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:15,900 INFO L93 Difference]: Finished difference Result 2887 states and 10689 transitions. [2022-01-28 14:36:15,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:15,900 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:15,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:15,907 INFO L225 Difference]: With dead ends: 2887 [2022-01-28 14:36:15,907 INFO L226 Difference]: Without dead ends: 2698 [2022-01-28 14:36:15,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:15,907 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 109 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:15,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 153 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:15,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2698 states. [2022-01-28 14:36:15,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2698 to 1476. [2022-01-28 14:36:15,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1475 states have (on average 3.96) internal successors, (5841), 1475 states have internal predecessors, (5841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:15,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 5841 transitions. [2022-01-28 14:36:15,939 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 5841 transitions. Word has length 25 [2022-01-28 14:36:15,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:15,939 INFO L470 AbstractCegarLoop]: Abstraction has 1476 states and 5841 transitions. [2022-01-28 14:36:15,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:15,939 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 5841 transitions. [2022-01-28 14:36:15,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:15,941 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:15,941 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:15,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2022-01-28 14:36:15,941 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:15,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:15,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1100098035, now seen corresponding path program 162 times [2022-01-28 14:36:15,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:15,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636051498] [2022-01-28 14:36:15,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:15,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:15,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:16,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:16,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:16,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636051498] [2022-01-28 14:36:16,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636051498] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:16,033 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:16,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:16,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82842961] [2022-01-28 14:36:16,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:16,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:16,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:16,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:16,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:16,033 INFO L87 Difference]: Start difference. First operand 1476 states and 5841 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:16,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:16,155 INFO L93 Difference]: Finished difference Result 2745 states and 10235 transitions. [2022-01-28 14:36:16,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:16,156 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:16,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:16,162 INFO L225 Difference]: With dead ends: 2745 [2022-01-28 14:36:16,162 INFO L226 Difference]: Without dead ends: 2538 [2022-01-28 14:36:16,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:16,162 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 95 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:16,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 146 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:16,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2538 states. [2022-01-28 14:36:16,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2538 to 1444. [2022-01-28 14:36:16,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 3.9785169785169785) internal successors, (5741), 1443 states have internal predecessors, (5741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:16,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 5741 transitions. [2022-01-28 14:36:16,192 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 5741 transitions. Word has length 25 [2022-01-28 14:36:16,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:16,192 INFO L470 AbstractCegarLoop]: Abstraction has 1444 states and 5741 transitions. [2022-01-28 14:36:16,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:16,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 5741 transitions. [2022-01-28 14:36:16,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:16,194 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:16,194 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:16,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2022-01-28 14:36:16,194 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:16,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:16,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1548703881, now seen corresponding path program 163 times [2022-01-28 14:36:16,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:16,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610974886] [2022-01-28 14:36:16,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:16,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:16,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:16,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:16,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:16,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610974886] [2022-01-28 14:36:16,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610974886] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:16,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:16,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:16,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348740935] [2022-01-28 14:36:16,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:16,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:16,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:16,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:16,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:16,329 INFO L87 Difference]: Start difference. First operand 1444 states and 5741 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:16,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:16,448 INFO L93 Difference]: Finished difference Result 3119 states and 11567 transitions. [2022-01-28 14:36:16,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:16,448 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:16,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:16,454 INFO L225 Difference]: With dead ends: 3119 [2022-01-28 14:36:16,454 INFO L226 Difference]: Without dead ends: 2930 [2022-01-28 14:36:16,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:16,454 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 114 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:16,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 153 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:16,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2022-01-28 14:36:16,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1496. [2022-01-28 14:36:16,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1496 states, 1495 states have (on average 3.97123745819398) internal successors, (5937), 1495 states have internal predecessors, (5937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:16,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 5937 transitions. [2022-01-28 14:36:16,481 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 5937 transitions. Word has length 25 [2022-01-28 14:36:16,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:16,481 INFO L470 AbstractCegarLoop]: Abstraction has 1496 states and 5937 transitions. [2022-01-28 14:36:16,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:16,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 5937 transitions. [2022-01-28 14:36:16,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:16,484 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:16,484 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:16,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2022-01-28 14:36:16,484 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:16,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:16,484 INFO L85 PathProgramCache]: Analyzing trace with hash 2005311317, now seen corresponding path program 164 times [2022-01-28 14:36:16,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:16,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156670822] [2022-01-28 14:36:16,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:16,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:16,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:16,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:16,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:16,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156670822] [2022-01-28 14:36:16,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156670822] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:16,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:16,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:16,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030654920] [2022-01-28 14:36:16,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:16,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:16,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:16,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:16,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:16,565 INFO L87 Difference]: Start difference. First operand 1496 states and 5937 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:16,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:16,673 INFO L93 Difference]: Finished difference Result 3105 states and 11498 transitions. [2022-01-28 14:36:16,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:16,673 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:16,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:16,680 INFO L225 Difference]: With dead ends: 3105 [2022-01-28 14:36:16,680 INFO L226 Difference]: Without dead ends: 2906 [2022-01-28 14:36:16,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:16,681 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 104 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:16,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 156 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:16,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2022-01-28 14:36:16,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 1472. [2022-01-28 14:36:16,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1471 states have (on average 3.976206662134602) internal successors, (5849), 1471 states have internal predecessors, (5849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:16,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5849 transitions. [2022-01-28 14:36:16,712 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5849 transitions. Word has length 25 [2022-01-28 14:36:16,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:16,712 INFO L470 AbstractCegarLoop]: Abstraction has 1472 states and 5849 transitions. [2022-01-28 14:36:16,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:16,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5849 transitions. [2022-01-28 14:36:16,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:16,715 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:16,715 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:16,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2022-01-28 14:36:16,715 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:16,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:16,715 INFO L85 PathProgramCache]: Analyzing trace with hash 925227989, now seen corresponding path program 165 times [2022-01-28 14:36:16,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:16,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888319081] [2022-01-28 14:36:16,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:16,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:16,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:16,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:16,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888319081] [2022-01-28 14:36:16,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888319081] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:16,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:16,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:16,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406172676] [2022-01-28 14:36:16,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:16,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:16,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:16,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:16,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:16,889 INFO L87 Difference]: Start difference. First operand 1472 states and 5849 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:17,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:17,058 INFO L93 Difference]: Finished difference Result 3142 states and 11614 transitions. [2022-01-28 14:36:17,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:17,058 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:17,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:17,065 INFO L225 Difference]: With dead ends: 3142 [2022-01-28 14:36:17,065 INFO L226 Difference]: Without dead ends: 2953 [2022-01-28 14:36:17,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:17,065 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 111 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:17,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 142 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:17,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2022-01-28 14:36:17,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 1535. [2022-01-28 14:36:17,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1535 states, 1534 states have (on average 3.9478487614080833) internal successors, (6056), 1534 states have internal predecessors, (6056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:17,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 6056 transitions. [2022-01-28 14:36:17,098 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 6056 transitions. Word has length 25 [2022-01-28 14:36:17,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:17,098 INFO L470 AbstractCegarLoop]: Abstraction has 1535 states and 6056 transitions. [2022-01-28 14:36:17,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:17,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 6056 transitions. [2022-01-28 14:36:17,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:17,101 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:17,101 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:17,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2022-01-28 14:36:17,101 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:17,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:17,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1349786411, now seen corresponding path program 166 times [2022-01-28 14:36:17,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:17,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049691411] [2022-01-28 14:36:17,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:17,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:17,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:17,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:17,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049691411] [2022-01-28 14:36:17,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049691411] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:17,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:17,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:17,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978296820] [2022-01-28 14:36:17,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:17,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:17,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:17,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:17,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:17,235 INFO L87 Difference]: Start difference. First operand 1535 states and 6056 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:17,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:17,363 INFO L93 Difference]: Finished difference Result 3175 states and 11697 transitions. [2022-01-28 14:36:17,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:17,363 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:17,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:17,370 INFO L225 Difference]: With dead ends: 3175 [2022-01-28 14:36:17,370 INFO L226 Difference]: Without dead ends: 2890 [2022-01-28 14:36:17,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:17,370 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 99 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:17,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 179 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:17,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2022-01-28 14:36:17,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 1472. [2022-01-28 14:36:17,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1471 states have (on average 3.957171991842284) internal successors, (5821), 1471 states have internal predecessors, (5821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:17,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5821 transitions. [2022-01-28 14:36:17,397 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5821 transitions. Word has length 25 [2022-01-28 14:36:17,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:17,397 INFO L470 AbstractCegarLoop]: Abstraction has 1472 states and 5821 transitions. [2022-01-28 14:36:17,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:17,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5821 transitions. [2022-01-28 14:36:17,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:17,413 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:17,414 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:17,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2022-01-28 14:36:17,414 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:17,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:17,414 INFO L85 PathProgramCache]: Analyzing trace with hash 671395123, now seen corresponding path program 167 times [2022-01-28 14:36:17,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:17,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554837190] [2022-01-28 14:36:17,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:17,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:17,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:17,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:17,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554837190] [2022-01-28 14:36:17,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554837190] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:17,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:17,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:17,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520810327] [2022-01-28 14:36:17,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:17,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:17,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:17,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:17,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:17,537 INFO L87 Difference]: Start difference. First operand 1472 states and 5821 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:17,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:17,632 INFO L93 Difference]: Finished difference Result 3091 states and 11422 transitions. [2022-01-28 14:36:17,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:17,632 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:17,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:17,638 INFO L225 Difference]: With dead ends: 3091 [2022-01-28 14:36:17,639 INFO L226 Difference]: Without dead ends: 2916 [2022-01-28 14:36:17,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:17,639 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 103 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:17,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 153 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:17,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2022-01-28 14:36:17,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 1512. [2022-01-28 14:36:17,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1511 states have (on average 3.9450694904037062) internal successors, (5961), 1511 states have internal predecessors, (5961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:17,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 5961 transitions. [2022-01-28 14:36:17,667 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 5961 transitions. Word has length 25 [2022-01-28 14:36:17,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:17,667 INFO L470 AbstractCegarLoop]: Abstraction has 1512 states and 5961 transitions. [2022-01-28 14:36:17,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:17,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 5961 transitions. [2022-01-28 14:36:17,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:17,669 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:17,669 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:17,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2022-01-28 14:36:17,669 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:17,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:17,670 INFO L85 PathProgramCache]: Analyzing trace with hash 889746709, now seen corresponding path program 168 times [2022-01-28 14:36:17,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:17,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225417106] [2022-01-28 14:36:17,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:17,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:17,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:17,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:17,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:17,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225417106] [2022-01-28 14:36:17,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225417106] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:17,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:17,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:17,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999612489] [2022-01-28 14:36:17,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:17,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:17,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:17,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:17,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:17,760 INFO L87 Difference]: Start difference. First operand 1512 states and 5961 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:17,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:17,847 INFO L93 Difference]: Finished difference Result 3043 states and 11222 transitions. [2022-01-28 14:36:17,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:17,847 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:17,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:17,853 INFO L225 Difference]: With dead ends: 3043 [2022-01-28 14:36:17,853 INFO L226 Difference]: Without dead ends: 2741 [2022-01-28 14:36:17,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:17,854 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 100 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:17,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 148 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:17,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2741 states. [2022-01-28 14:36:17,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2741 to 1432. [2022-01-28 14:36:17,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1431 states have (on average 3.9853249475890986) internal successors, (5703), 1431 states have internal predecessors, (5703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:17,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 5703 transitions. [2022-01-28 14:36:17,898 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 5703 transitions. Word has length 25 [2022-01-28 14:36:17,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:17,898 INFO L470 AbstractCegarLoop]: Abstraction has 1432 states and 5703 transitions. [2022-01-28 14:36:17,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:17,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 5703 transitions. [2022-01-28 14:36:17,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:17,901 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:17,901 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:17,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2022-01-28 14:36:17,901 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:17,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:17,902 INFO L85 PathProgramCache]: Analyzing trace with hash 334087797, now seen corresponding path program 169 times [2022-01-28 14:36:17,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:17,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484017362] [2022-01-28 14:36:17,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:17,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:17,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:17,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:17,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:17,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484017362] [2022-01-28 14:36:17,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484017362] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:17,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:18,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:18,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917717460] [2022-01-28 14:36:18,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:18,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:18,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:18,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:18,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:18,000 INFO L87 Difference]: Start difference. First operand 1432 states and 5703 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:18,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:18,107 INFO L93 Difference]: Finished difference Result 3020 states and 11214 transitions. [2022-01-28 14:36:18,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:18,107 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:18,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:18,114 INFO L225 Difference]: With dead ends: 3020 [2022-01-28 14:36:18,114 INFO L226 Difference]: Without dead ends: 2861 [2022-01-28 14:36:18,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:18,135 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 100 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:18,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 163 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:18,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2861 states. [2022-01-28 14:36:18,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2861 to 1488. [2022-01-28 14:36:18,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1487 states have (on average 3.9858776059179557) internal successors, (5927), 1487 states have internal predecessors, (5927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:18,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 5927 transitions. [2022-01-28 14:36:18,182 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 5927 transitions. Word has length 25 [2022-01-28 14:36:18,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:18,183 INFO L470 AbstractCegarLoop]: Abstraction has 1488 states and 5927 transitions. [2022-01-28 14:36:18,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:18,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 5927 transitions. [2022-01-28 14:36:18,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:18,185 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:18,185 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:18,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2022-01-28 14:36:18,186 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:18,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:18,186 INFO L85 PathProgramCache]: Analyzing trace with hash -674210187, now seen corresponding path program 170 times [2022-01-28 14:36:18,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:18,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310635700] [2022-01-28 14:36:18,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:18,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:18,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:18,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:18,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310635700] [2022-01-28 14:36:18,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310635700] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:18,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:18,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:18,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592309100] [2022-01-28 14:36:18,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:18,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:18,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:18,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:18,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:18,301 INFO L87 Difference]: Start difference. First operand 1488 states and 5927 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:18,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:18,399 INFO L93 Difference]: Finished difference Result 3083 states and 11421 transitions. [2022-01-28 14:36:18,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:18,399 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:18,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:18,407 INFO L225 Difference]: With dead ends: 3083 [2022-01-28 14:36:18,407 INFO L226 Difference]: Without dead ends: 2829 [2022-01-28 14:36:18,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:18,407 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 112 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:18,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 155 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:18,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2829 states. [2022-01-28 14:36:18,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2829 to 1456. [2022-01-28 14:36:18,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1455 states have (on average 3.9855670103092784) internal successors, (5799), 1455 states have internal predecessors, (5799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:18,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 5799 transitions. [2022-01-28 14:36:18,437 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 5799 transitions. Word has length 25 [2022-01-28 14:36:18,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:18,437 INFO L470 AbstractCegarLoop]: Abstraction has 1456 states and 5799 transitions. [2022-01-28 14:36:18,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:18,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 5799 transitions. [2022-01-28 14:36:18,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:18,439 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:18,440 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:18,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2022-01-28 14:36:18,440 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:18,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:18,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1323121303, now seen corresponding path program 171 times [2022-01-28 14:36:18,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:18,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823530725] [2022-01-28 14:36:18,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:18,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:18,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:18,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:18,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:18,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823530725] [2022-01-28 14:36:18,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823530725] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:18,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:18,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:18,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968417979] [2022-01-28 14:36:18,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:18,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:18,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:18,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:18,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:18,523 INFO L87 Difference]: Start difference. First operand 1456 states and 5799 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:18,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:18,618 INFO L93 Difference]: Finished difference Result 2969 states and 11015 transitions. [2022-01-28 14:36:18,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:18,619 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:18,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:18,625 INFO L225 Difference]: With dead ends: 2969 [2022-01-28 14:36:18,625 INFO L226 Difference]: Without dead ends: 2810 [2022-01-28 14:36:18,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:18,625 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 103 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:18,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 169 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:18,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2810 states. [2022-01-28 14:36:18,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2810 to 1472. [2022-01-28 14:36:18,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1471 states have (on average 3.9748470428280083) internal successors, (5847), 1471 states have internal predecessors, (5847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:18,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5847 transitions. [2022-01-28 14:36:18,652 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5847 transitions. Word has length 25 [2022-01-28 14:36:18,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:18,652 INFO L470 AbstractCegarLoop]: Abstraction has 1472 states and 5847 transitions. [2022-01-28 14:36:18,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:18,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5847 transitions. [2022-01-28 14:36:18,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:18,654 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:18,654 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:18,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2022-01-28 14:36:18,654 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:18,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:18,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1963548009, now seen corresponding path program 172 times [2022-01-28 14:36:18,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:18,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822225253] [2022-01-28 14:36:18,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:18,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:18,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:18,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:18,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822225253] [2022-01-28 14:36:18,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822225253] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:18,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:18,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:18,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903032185] [2022-01-28 14:36:18,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:18,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:18,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:18,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:18,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:18,732 INFO L87 Difference]: Start difference. First operand 1472 states and 5847 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:18,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:18,814 INFO L93 Difference]: Finished difference Result 2997 states and 11103 transitions. [2022-01-28 14:36:18,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:18,814 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:18,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:18,820 INFO L225 Difference]: With dead ends: 2997 [2022-01-28 14:36:18,821 INFO L226 Difference]: Without dead ends: 2794 [2022-01-28 14:36:18,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:18,821 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 99 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:18,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 152 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:18,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2794 states. [2022-01-28 14:36:18,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2794 to 1456. [2022-01-28 14:36:18,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1455 states have (on average 3.980068728522337) internal successors, (5791), 1455 states have internal predecessors, (5791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:18,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 5791 transitions. [2022-01-28 14:36:18,850 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 5791 transitions. Word has length 25 [2022-01-28 14:36:18,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:18,850 INFO L470 AbstractCegarLoop]: Abstraction has 1456 states and 5791 transitions. [2022-01-28 14:36:18,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:18,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 5791 transitions. [2022-01-28 14:36:18,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:18,852 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:18,852 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:18,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2022-01-28 14:36:18,853 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:18,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:18,853 INFO L85 PathProgramCache]: Analyzing trace with hash -275301737, now seen corresponding path program 173 times [2022-01-28 14:36:18,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:18,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998613555] [2022-01-28 14:36:18,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:18,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:18,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:18,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:18,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:18,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998613555] [2022-01-28 14:36:18,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998613555] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:18,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:18,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:18,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131693191] [2022-01-28 14:36:18,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:18,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:18,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:18,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:18,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:18,954 INFO L87 Difference]: Start difference. First operand 1456 states and 5791 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:19,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:19,050 INFO L93 Difference]: Finished difference Result 3090 states and 11457 transitions. [2022-01-28 14:36:19,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:19,050 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:19,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:19,056 INFO L225 Difference]: With dead ends: 3090 [2022-01-28 14:36:19,056 INFO L226 Difference]: Without dead ends: 2903 [2022-01-28 14:36:19,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:19,060 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 98 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:19,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 160 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:19,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2903 states. [2022-01-28 14:36:19,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2903 to 1502. [2022-01-28 14:36:19,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1502 states, 1501 states have (on average 3.9626915389740174) internal successors, (5948), 1501 states have internal predecessors, (5948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:19,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 5948 transitions. [2022-01-28 14:36:19,095 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 5948 transitions. Word has length 25 [2022-01-28 14:36:19,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:19,095 INFO L470 AbstractCegarLoop]: Abstraction has 1502 states and 5948 transitions. [2022-01-28 14:36:19,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:19,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 5948 transitions. [2022-01-28 14:36:19,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:19,097 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:19,098 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:19,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2022-01-28 14:36:19,098 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:19,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:19,098 INFO L85 PathProgramCache]: Analyzing trace with hash -628441227, now seen corresponding path program 174 times [2022-01-28 14:36:19,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:19,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043939337] [2022-01-28 14:36:19,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:19,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:19,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:19,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:19,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:19,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043939337] [2022-01-28 14:36:19,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043939337] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:19,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:19,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:19,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926591903] [2022-01-28 14:36:19,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:19,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:19,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:19,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:19,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:19,216 INFO L87 Difference]: Start difference. First operand 1502 states and 5948 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:19,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:19,296 INFO L93 Difference]: Finished difference Result 3125 states and 11546 transitions. [2022-01-28 14:36:19,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:19,296 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:19,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:19,302 INFO L225 Difference]: With dead ends: 3125 [2022-01-28 14:36:19,302 INFO L226 Difference]: Without dead ends: 2841 [2022-01-28 14:36:19,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:19,303 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 116 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:19,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 138 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:19,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2841 states. [2022-01-28 14:36:19,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2841 to 1440. [2022-01-28 14:36:19,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1439 states have (on average 3.985406532314107) internal successors, (5735), 1439 states have internal predecessors, (5735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:19,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 5735 transitions. [2022-01-28 14:36:19,329 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 5735 transitions. Word has length 25 [2022-01-28 14:36:19,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:19,329 INFO L470 AbstractCegarLoop]: Abstraction has 1440 states and 5735 transitions. [2022-01-28 14:36:19,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:19,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 5735 transitions. [2022-01-28 14:36:19,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:19,332 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:19,332 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:19,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2022-01-28 14:36:19,332 INFO L402 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:19,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:19,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1735205335, now seen corresponding path program 175 times [2022-01-28 14:36:19,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:19,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468411383] [2022-01-28 14:36:19,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:19,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:19,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:19,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:19,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:19,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468411383] [2022-01-28 14:36:19,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468411383] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:19,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:19,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:19,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354174183] [2022-01-28 14:36:19,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:19,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:19,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:19,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:19,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:19,434 INFO L87 Difference]: Start difference. First operand 1440 states and 5735 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:19,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:19,508 INFO L93 Difference]: Finished difference Result 2970 states and 11015 transitions. [2022-01-28 14:36:19,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:19,508 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:19,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:19,514 INFO L225 Difference]: With dead ends: 2970 [2022-01-28 14:36:19,515 INFO L226 Difference]: Without dead ends: 2811 [2022-01-28 14:36:19,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:19,515 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 115 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:19,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 144 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:19,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2811 states. [2022-01-28 14:36:19,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2811 to 1488. [2022-01-28 14:36:19,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1487 states have (on average 3.980497646267653) internal successors, (5919), 1487 states have internal predecessors, (5919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:19,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 5919 transitions. [2022-01-28 14:36:19,546 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 5919 transitions. Word has length 25 [2022-01-28 14:36:19,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:19,546 INFO L470 AbstractCegarLoop]: Abstraction has 1488 states and 5919 transitions. [2022-01-28 14:36:19,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:19,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 5919 transitions. [2022-01-28 14:36:19,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:19,548 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:19,548 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:19,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2022-01-28 14:36:19,548 INFO L402 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:19,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:19,549 INFO L85 PathProgramCache]: Analyzing trace with hash 726907351, now seen corresponding path program 176 times [2022-01-28 14:36:19,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:19,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032693673] [2022-01-28 14:36:19,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:19,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:19,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:19,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:19,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:19,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032693673] [2022-01-28 14:36:19,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032693673] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:19,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:19,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:19,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742742026] [2022-01-28 14:36:19,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:19,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:19,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:19,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:19,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:19,633 INFO L87 Difference]: Start difference. First operand 1488 states and 5919 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:19,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:19,710 INFO L93 Difference]: Finished difference Result 3033 states and 11222 transitions. [2022-01-28 14:36:19,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:19,710 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:19,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:19,717 INFO L225 Difference]: With dead ends: 3033 [2022-01-28 14:36:19,717 INFO L226 Difference]: Without dead ends: 2779 [2022-01-28 14:36:19,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:19,717 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 104 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:19,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 150 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:19,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2779 states. [2022-01-28 14:36:19,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2779 to 1456. [2022-01-28 14:36:19,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1455 states have (on average 3.980068728522337) internal successors, (5791), 1455 states have internal predecessors, (5791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:19,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 5791 transitions. [2022-01-28 14:36:19,747 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 5791 transitions. Word has length 25 [2022-01-28 14:36:19,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:19,747 INFO L470 AbstractCegarLoop]: Abstraction has 1456 states and 5791 transitions. [2022-01-28 14:36:19,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:19,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 5791 transitions. [2022-01-28 14:36:19,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:19,749 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:19,749 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:19,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2022-01-28 14:36:19,749 INFO L402 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:19,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:19,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1519203945, now seen corresponding path program 177 times [2022-01-28 14:36:19,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:19,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084927972] [2022-01-28 14:36:19,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:19,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:19,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:19,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:19,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:19,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084927972] [2022-01-28 14:36:19,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084927972] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:19,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:19,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:19,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119607170] [2022-01-28 14:36:19,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:19,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:19,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:19,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:19,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:19,851 INFO L87 Difference]: Start difference. First operand 1456 states and 5791 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:19,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:19,930 INFO L93 Difference]: Finished difference Result 2875 states and 10664 transitions. [2022-01-28 14:36:19,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:19,930 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:19,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:19,954 INFO L225 Difference]: With dead ends: 2875 [2022-01-28 14:36:19,955 INFO L226 Difference]: Without dead ends: 2716 [2022-01-28 14:36:19,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:19,961 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 107 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:19,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 162 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:19,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2716 states. [2022-01-28 14:36:19,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2716 to 1472. [2022-01-28 14:36:19,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1471 states have (on average 3.9694085656016314) internal successors, (5839), 1471 states have internal predecessors, (5839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:19,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5839 transitions. [2022-01-28 14:36:19,992 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5839 transitions. Word has length 25 [2022-01-28 14:36:19,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:19,992 INFO L470 AbstractCegarLoop]: Abstraction has 1472 states and 5839 transitions. [2022-01-28 14:36:19,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:19,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5839 transitions. [2022-01-28 14:36:19,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:19,994 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:19,994 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:19,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2022-01-28 14:36:19,994 INFO L402 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:19,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:19,995 INFO L85 PathProgramCache]: Analyzing trace with hash 833491351, now seen corresponding path program 178 times [2022-01-28 14:36:19,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:19,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646444223] [2022-01-28 14:36:19,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:19,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:19,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:20,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:20,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:20,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646444223] [2022-01-28 14:36:20,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646444223] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:20,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:20,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:20,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253335159] [2022-01-28 14:36:20,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:20,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:20,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:20,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:20,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:20,109 INFO L87 Difference]: Start difference. First operand 1472 states and 5839 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:20,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:20,228 INFO L93 Difference]: Finished difference Result 2763 states and 10327 transitions. [2022-01-28 14:36:20,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:20,229 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:20,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:20,236 INFO L225 Difference]: With dead ends: 2763 [2022-01-28 14:36:20,236 INFO L226 Difference]: Without dead ends: 2572 [2022-01-28 14:36:20,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:20,236 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 93 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:20,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 144 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:20,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2572 states. [2022-01-28 14:36:20,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2572 to 1456. [2022-01-28 14:36:20,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1455 states have (on average 3.9745704467353953) internal successors, (5783), 1455 states have internal predecessors, (5783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:20,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 5783 transitions. [2022-01-28 14:36:20,269 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 5783 transitions. Word has length 25 [2022-01-28 14:36:20,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:20,269 INFO L470 AbstractCegarLoop]: Abstraction has 1456 states and 5783 transitions. [2022-01-28 14:36:20,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:20,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 5783 transitions. [2022-01-28 14:36:20,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:20,271 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:20,271 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:20,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2022-01-28 14:36:20,272 INFO L402 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:20,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:20,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1773229673, now seen corresponding path program 179 times [2022-01-28 14:36:20,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:20,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404773313] [2022-01-28 14:36:20,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:20,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:20,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:20,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:20,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:20,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404773313] [2022-01-28 14:36:20,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404773313] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:20,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:20,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:20,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452789802] [2022-01-28 14:36:20,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:20,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:20,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:20,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:20,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:20,396 INFO L87 Difference]: Start difference. First operand 1456 states and 5783 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:20,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:20,519 INFO L93 Difference]: Finished difference Result 3010 states and 11155 transitions. [2022-01-28 14:36:20,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:20,519 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:20,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:20,526 INFO L225 Difference]: With dead ends: 3010 [2022-01-28 14:36:20,526 INFO L226 Difference]: Without dead ends: 2835 [2022-01-28 14:36:20,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:20,527 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 112 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:20,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 144 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:20,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2835 states. [2022-01-28 14:36:20,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 1496. [2022-01-28 14:36:20,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1496 states, 1495 states have (on average 3.9618729096989966) internal successors, (5923), 1495 states have internal predecessors, (5923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:20,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 5923 transitions. [2022-01-28 14:36:20,555 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 5923 transitions. Word has length 25 [2022-01-28 14:36:20,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:20,555 INFO L470 AbstractCegarLoop]: Abstraction has 1496 states and 5923 transitions. [2022-01-28 14:36:20,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:20,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 5923 transitions. [2022-01-28 14:36:20,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:20,557 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:20,557 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:20,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2022-01-28 14:36:20,557 INFO L402 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:20,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:20,558 INFO L85 PathProgramCache]: Analyzing trace with hash 866213237, now seen corresponding path program 180 times [2022-01-28 14:36:20,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:20,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591641060] [2022-01-28 14:36:20,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:20,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:20,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:20,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:20,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:20,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591641060] [2022-01-28 14:36:20,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591641060] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:20,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:20,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:20,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382474727] [2022-01-28 14:36:20,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:20,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:20,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:20,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:20,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:20,678 INFO L87 Difference]: Start difference. First operand 1496 states and 5923 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:20,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:20,782 INFO L93 Difference]: Finished difference Result 2962 states and 10955 transitions. [2022-01-28 14:36:20,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:20,782 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:20,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:20,790 INFO L225 Difference]: With dead ends: 2962 [2022-01-28 14:36:20,790 INFO L226 Difference]: Without dead ends: 2684 [2022-01-28 14:36:20,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:20,790 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 97 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:20,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 158 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:20,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2684 states. [2022-01-28 14:36:20,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2684 to 1440. [2022-01-28 14:36:20,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1439 states have (on average 3.9798471160528144) internal successors, (5727), 1439 states have internal predecessors, (5727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:20,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 5727 transitions. [2022-01-28 14:36:20,820 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 5727 transitions. Word has length 25 [2022-01-28 14:36:20,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:20,820 INFO L470 AbstractCegarLoop]: Abstraction has 1440 states and 5727 transitions. [2022-01-28 14:36:20,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:20,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 5727 transitions. [2022-01-28 14:36:20,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:20,822 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:20,822 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:20,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2022-01-28 14:36:20,823 INFO L402 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:20,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:20,823 INFO L85 PathProgramCache]: Analyzing trace with hash 573562169, now seen corresponding path program 181 times [2022-01-28 14:36:20,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:20,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179819808] [2022-01-28 14:36:20,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:20,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:20,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:20,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:20,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:20,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179819808] [2022-01-28 14:36:20,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179819808] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:20,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:20,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:20,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756512124] [2022-01-28 14:36:20,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:20,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:20,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:20,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:20,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:20,901 INFO L87 Difference]: Start difference. First operand 1440 states and 5727 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:20,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:20,974 INFO L93 Difference]: Finished difference Result 2860 states and 10605 transitions. [2022-01-28 14:36:20,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:20,974 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:20,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:20,980 INFO L225 Difference]: With dead ends: 2860 [2022-01-28 14:36:20,980 INFO L226 Difference]: Without dead ends: 2701 [2022-01-28 14:36:20,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:20,981 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 122 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:20,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 140 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:36:20,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2022-01-28 14:36:21,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 1464. [2022-01-28 14:36:21,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1463 states have (on average 3.971975393028025) internal successors, (5811), 1463 states have internal predecessors, (5811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:21,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 5811 transitions. [2022-01-28 14:36:21,010 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 5811 transitions. Word has length 25 [2022-01-28 14:36:21,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:21,010 INFO L470 AbstractCegarLoop]: Abstraction has 1464 states and 5811 transitions. [2022-01-28 14:36:21,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:21,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 5811 transitions. [2022-01-28 14:36:21,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:21,012 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:21,012 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:21,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2022-01-28 14:36:21,013 INFO L402 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:21,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:21,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1581860153, now seen corresponding path program 182 times [2022-01-28 14:36:21,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:21,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451340706] [2022-01-28 14:36:21,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:21,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:21,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:21,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:21,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:21,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451340706] [2022-01-28 14:36:21,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451340706] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:21,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:21,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:21,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902027010] [2022-01-28 14:36:21,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:21,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:21,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:21,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:21,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:21,134 INFO L87 Difference]: Start difference. First operand 1464 states and 5811 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:21,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:21,269 INFO L93 Difference]: Finished difference Result 2888 states and 10693 transitions. [2022-01-28 14:36:21,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:21,270 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:21,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:21,277 INFO L225 Difference]: With dead ends: 2888 [2022-01-28 14:36:21,277 INFO L226 Difference]: Without dead ends: 2685 [2022-01-28 14:36:21,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:21,277 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 93 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:21,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 184 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:21,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2685 states. [2022-01-28 14:36:21,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2685 to 1448. [2022-01-28 14:36:21,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1447 states have (on average 3.977194194885971) internal successors, (5755), 1447 states have internal predecessors, (5755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:21,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5755 transitions. [2022-01-28 14:36:21,310 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5755 transitions. Word has length 25 [2022-01-28 14:36:21,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:21,310 INFO L470 AbstractCegarLoop]: Abstraction has 1448 states and 5755 transitions. [2022-01-28 14:36:21,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:21,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5755 transitions. [2022-01-28 14:36:21,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:21,313 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:21,313 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:21,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2022-01-28 14:36:21,313 INFO L402 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:21,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:21,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1542517481, now seen corresponding path program 183 times [2022-01-28 14:36:21,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:21,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239917980] [2022-01-28 14:36:21,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:21,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:21,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:21,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:21,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:21,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239917980] [2022-01-28 14:36:21,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239917980] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:21,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:21,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:21,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160752906] [2022-01-28 14:36:21,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:21,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:21,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:21,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:21,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:21,407 INFO L87 Difference]: Start difference. First operand 1448 states and 5755 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:21,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:21,482 INFO L93 Difference]: Finished difference Result 2816 states and 10445 transitions. [2022-01-28 14:36:21,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:21,482 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:21,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:21,489 INFO L225 Difference]: With dead ends: 2816 [2022-01-28 14:36:21,489 INFO L226 Difference]: Without dead ends: 2657 [2022-01-28 14:36:21,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:21,489 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 126 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:21,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 137 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:21,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2657 states. [2022-01-28 14:36:21,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2657 to 1464. [2022-01-28 14:36:21,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1463 states have (on average 3.9665071770334928) internal successors, (5803), 1463 states have internal predecessors, (5803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:21,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 5803 transitions. [2022-01-28 14:36:21,536 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 5803 transitions. Word has length 25 [2022-01-28 14:36:21,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:21,537 INFO L470 AbstractCegarLoop]: Abstraction has 1464 states and 5803 transitions. [2022-01-28 14:36:21,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:21,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 5803 transitions. [2022-01-28 14:36:21,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:21,539 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:21,539 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:21,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2022-01-28 14:36:21,539 INFO L402 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:21,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:21,540 INFO L85 PathProgramCache]: Analyzing trace with hash 2106918201, now seen corresponding path program 184 times [2022-01-28 14:36:21,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:21,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177100329] [2022-01-28 14:36:21,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:21,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:21,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:21,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:21,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:21,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177100329] [2022-01-28 14:36:21,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177100329] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:21,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:21,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:21,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483271672] [2022-01-28 14:36:21,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:21,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:21,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:21,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:21,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:21,619 INFO L87 Difference]: Start difference. First operand 1464 states and 5803 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:21,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:21,697 INFO L93 Difference]: Finished difference Result 2704 states and 10108 transitions. [2022-01-28 14:36:21,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:21,697 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:21,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:21,703 INFO L225 Difference]: With dead ends: 2704 [2022-01-28 14:36:21,703 INFO L226 Difference]: Without dead ends: 2513 [2022-01-28 14:36:21,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:21,703 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 102 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:21,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 145 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:36:21,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2513 states. [2022-01-28 14:36:21,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2513 to 1448. [2022-01-28 14:36:21,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1447 states have (on average 3.9716655148583278) internal successors, (5747), 1447 states have internal predecessors, (5747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:21,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5747 transitions. [2022-01-28 14:36:21,733 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5747 transitions. Word has length 25 [2022-01-28 14:36:21,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:21,734 INFO L470 AbstractCegarLoop]: Abstraction has 1448 states and 5747 transitions. [2022-01-28 14:36:21,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:21,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5747 transitions. [2022-01-28 14:36:21,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:21,736 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:21,736 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:21,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2022-01-28 14:36:21,736 INFO L402 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:21,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:21,737 INFO L85 PathProgramCache]: Analyzing trace with hash -925725383, now seen corresponding path program 185 times [2022-01-28 14:36:21,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:21,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609628885] [2022-01-28 14:36:21,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:21,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:21,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:21,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:21,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:21,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609628885] [2022-01-28 14:36:21,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609628885] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:21,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:21,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:21,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251861489] [2022-01-28 14:36:21,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:21,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:21,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:21,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:21,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:21,816 INFO L87 Difference]: Start difference. First operand 1448 states and 5747 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:21,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:21,902 INFO L93 Difference]: Finished difference Result 2852 states and 10577 transitions. [2022-01-28 14:36:21,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:21,902 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:21,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:21,909 INFO L225 Difference]: With dead ends: 2852 [2022-01-28 14:36:21,909 INFO L226 Difference]: Without dead ends: 2665 [2022-01-28 14:36:21,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:21,909 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 97 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:21,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 148 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:21,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2665 states. [2022-01-28 14:36:21,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2665 to 1472. [2022-01-28 14:36:21,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1471 states have (on average 3.9585316111488784) internal successors, (5823), 1471 states have internal predecessors, (5823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:21,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5823 transitions. [2022-01-28 14:36:21,947 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5823 transitions. Word has length 25 [2022-01-28 14:36:21,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:21,948 INFO L470 AbstractCegarLoop]: Abstraction has 1472 states and 5823 transitions. [2022-01-28 14:36:21,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:21,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5823 transitions. [2022-01-28 14:36:21,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:21,950 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:21,950 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:21,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2022-01-28 14:36:21,951 INFO L402 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:21,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:21,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1977097367, now seen corresponding path program 186 times [2022-01-28 14:36:21,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:21,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100463220] [2022-01-28 14:36:21,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:21,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:21,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:22,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:22,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:22,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100463220] [2022-01-28 14:36:22,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100463220] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:22,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:22,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:22,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783948880] [2022-01-28 14:36:22,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:22,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:22,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:22,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:22,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:22,051 INFO L87 Difference]: Start difference. First operand 1472 states and 5823 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:22,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:22,178 INFO L93 Difference]: Finished difference Result 2712 states and 10128 transitions. [2022-01-28 14:36:22,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:22,178 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:22,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:22,184 INFO L225 Difference]: With dead ends: 2712 [2022-01-28 14:36:22,185 INFO L226 Difference]: Without dead ends: 2505 [2022-01-28 14:36:22,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:22,185 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 83 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:22,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 182 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:22,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2505 states. [2022-01-28 14:36:22,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2505 to 1440. [2022-01-28 14:36:22,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1439 states have (on average 3.977067407922168) internal successors, (5723), 1439 states have internal predecessors, (5723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:22,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 5723 transitions. [2022-01-28 14:36:22,215 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 5723 transitions. Word has length 25 [2022-01-28 14:36:22,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:22,215 INFO L470 AbstractCegarLoop]: Abstraction has 1440 states and 5723 transitions. [2022-01-28 14:36:22,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:22,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 5723 transitions. [2022-01-28 14:36:22,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:22,218 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:22,218 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:22,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2022-01-28 14:36:22,218 INFO L402 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:22,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:22,218 INFO L85 PathProgramCache]: Analyzing trace with hash -2018695879, now seen corresponding path program 187 times [2022-01-28 14:36:22,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:22,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21555595] [2022-01-28 14:36:22,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:22,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:22,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:22,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:22,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:22,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21555595] [2022-01-28 14:36:22,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21555595] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:22,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:22,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:22,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808576332] [2022-01-28 14:36:22,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:22,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:22,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:22,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:22,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:22,343 INFO L87 Difference]: Start difference. First operand 1440 states and 5723 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:22,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:22,458 INFO L93 Difference]: Finished difference Result 3057 states and 11371 transitions. [2022-01-28 14:36:22,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:22,459 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:22,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:22,466 INFO L225 Difference]: With dead ends: 3057 [2022-01-28 14:36:22,466 INFO L226 Difference]: Without dead ends: 2870 [2022-01-28 14:36:22,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:22,466 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 106 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:22,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 143 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:22,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2870 states. [2022-01-28 14:36:22,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2870 to 1484. [2022-01-28 14:36:22,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1484 states, 1483 states have (on average 3.9723533378287255) internal successors, (5891), 1483 states have internal predecessors, (5891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:22,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1484 states to 1484 states and 5891 transitions. [2022-01-28 14:36:22,497 INFO L78 Accepts]: Start accepts. Automaton has 1484 states and 5891 transitions. Word has length 25 [2022-01-28 14:36:22,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:22,498 INFO L470 AbstractCegarLoop]: Abstraction has 1484 states and 5891 transitions. [2022-01-28 14:36:22,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:22,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1484 states and 5891 transitions. [2022-01-28 14:36:22,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:22,500 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:22,500 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:22,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2022-01-28 14:36:22,500 INFO L402 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:22,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:22,500 INFO L85 PathProgramCache]: Analyzing trace with hash 884126871, now seen corresponding path program 188 times [2022-01-28 14:36:22,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:22,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269435193] [2022-01-28 14:36:22,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:22,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:22,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:22,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:22,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:22,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269435193] [2022-01-28 14:36:22,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269435193] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:22,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:22,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:22,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842546172] [2022-01-28 14:36:22,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:22,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:22,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:22,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:22,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:22,586 INFO L87 Difference]: Start difference. First operand 1484 states and 5891 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:22,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:22,675 INFO L93 Difference]: Finished difference Result 3045 states and 11307 transitions. [2022-01-28 14:36:22,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:22,675 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:22,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:22,682 INFO L225 Difference]: With dead ends: 3045 [2022-01-28 14:36:22,682 INFO L226 Difference]: Without dead ends: 2846 [2022-01-28 14:36:22,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:22,682 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 92 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:22,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 173 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:22,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2022-01-28 14:36:22,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 1460. [2022-01-28 14:36:22,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1459 states have (on average 3.977381768334476) internal successors, (5803), 1459 states have internal predecessors, (5803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:22,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 5803 transitions. [2022-01-28 14:36:22,714 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 5803 transitions. Word has length 25 [2022-01-28 14:36:22,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:22,714 INFO L470 AbstractCegarLoop]: Abstraction has 1460 states and 5803 transitions. [2022-01-28 14:36:22,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:22,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 5803 transitions. [2022-01-28 14:36:22,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:22,716 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:22,716 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:22,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2022-01-28 14:36:22,716 INFO L402 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:22,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:22,717 INFO L85 PathProgramCache]: Analyzing trace with hash 455235991, now seen corresponding path program 189 times [2022-01-28 14:36:22,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:22,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658149645] [2022-01-28 14:36:22,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:22,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:22,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:22,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:22,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:22,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658149645] [2022-01-28 14:36:22,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658149645] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:22,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:22,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:22,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477296090] [2022-01-28 14:36:22,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:22,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:22,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:22,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:22,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:22,804 INFO L87 Difference]: Start difference. First operand 1460 states and 5803 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:22,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:22,912 INFO L93 Difference]: Finished difference Result 3080 states and 11418 transitions. [2022-01-28 14:36:22,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:22,913 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:22,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:22,920 INFO L225 Difference]: With dead ends: 3080 [2022-01-28 14:36:22,920 INFO L226 Difference]: Without dead ends: 2893 [2022-01-28 14:36:22,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:22,920 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 98 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:22,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 156 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:22,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2022-01-28 14:36:22,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 1506. [2022-01-28 14:36:22,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 3.9601328903654487) internal successors, (5960), 1505 states have internal predecessors, (5960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:22,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 5960 transitions. [2022-01-28 14:36:22,969 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 5960 transitions. Word has length 25 [2022-01-28 14:36:22,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:22,969 INFO L470 AbstractCegarLoop]: Abstraction has 1506 states and 5960 transitions. [2022-01-28 14:36:22,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:22,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 5960 transitions. [2022-01-28 14:36:22,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:22,971 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:22,971 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:22,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2022-01-28 14:36:22,971 INFO L402 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:22,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:22,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1823996439, now seen corresponding path program 190 times [2022-01-28 14:36:22,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:22,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424465883] [2022-01-28 14:36:22,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:22,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:23,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:23,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:23,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424465883] [2022-01-28 14:36:23,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424465883] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:23,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:23,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:23,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842408778] [2022-01-28 14:36:23,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:23,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:23,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:23,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:23,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:23,048 INFO L87 Difference]: Start difference. First operand 1506 states and 5960 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:23,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:23,137 INFO L93 Difference]: Finished difference Result 3115 states and 11507 transitions. [2022-01-28 14:36:23,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:23,137 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:23,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:23,144 INFO L225 Difference]: With dead ends: 3115 [2022-01-28 14:36:23,144 INFO L226 Difference]: Without dead ends: 2847 [2022-01-28 14:36:23,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:23,145 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 95 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:23,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 179 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:23,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2847 states. [2022-01-28 14:36:23,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2847 to 1460. [2022-01-28 14:36:23,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1459 states have (on average 3.9636737491432488) internal successors, (5783), 1459 states have internal predecessors, (5783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:23,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 5783 transitions. [2022-01-28 14:36:23,179 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 5783 transitions. Word has length 25 [2022-01-28 14:36:23,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:23,179 INFO L470 AbstractCegarLoop]: Abstraction has 1460 states and 5783 transitions. [2022-01-28 14:36:23,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:23,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 5783 transitions. [2022-01-28 14:36:23,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:23,181 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:23,181 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:23,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2022-01-28 14:36:23,182 INFO L402 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:23,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:23,182 INFO L85 PathProgramCache]: Analyzing trace with hash 819493365, now seen corresponding path program 191 times [2022-01-28 14:36:23,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:23,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24579795] [2022-01-28 14:36:23,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:23,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:23,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:23,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:23,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24579795] [2022-01-28 14:36:23,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24579795] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:23,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:23,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:23,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098814784] [2022-01-28 14:36:23,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:23,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:23,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:23,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:23,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:23,311 INFO L87 Difference]: Start difference. First operand 1460 states and 5783 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:23,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:23,394 INFO L93 Difference]: Finished difference Result 3050 states and 11295 transitions. [2022-01-28 14:36:23,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:23,395 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:23,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:23,403 INFO L225 Difference]: With dead ends: 3050 [2022-01-28 14:36:23,404 INFO L226 Difference]: Without dead ends: 2875 [2022-01-28 14:36:23,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:23,404 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 115 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:23,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 136 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:23,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2875 states. [2022-01-28 14:36:23,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2875 to 1500. [2022-01-28 14:36:23,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1500 states, 1499 states have (on average 3.95130086724483) internal successors, (5923), 1499 states have internal predecessors, (5923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:23,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 5923 transitions. [2022-01-28 14:36:23,434 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 5923 transitions. Word has length 25 [2022-01-28 14:36:23,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:23,434 INFO L470 AbstractCegarLoop]: Abstraction has 1500 states and 5923 transitions. [2022-01-28 14:36:23,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:23,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 5923 transitions. [2022-01-28 14:36:23,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:23,437 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:23,437 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:23,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2022-01-28 14:36:23,437 INFO L402 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:23,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:23,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1037844951, now seen corresponding path program 192 times [2022-01-28 14:36:23,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:23,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646644903] [2022-01-28 14:36:23,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:23,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:23,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:23,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:23,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:23,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646644903] [2022-01-28 14:36:23,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646644903] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:23,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:23,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:23,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081295051] [2022-01-28 14:36:23,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:23,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:23,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:23,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:23,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:23,517 INFO L87 Difference]: Start difference. First operand 1500 states and 5923 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:23,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:23,589 INFO L93 Difference]: Finished difference Result 3002 states and 11095 transitions. [2022-01-28 14:36:23,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:23,590 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:23,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:23,596 INFO L225 Difference]: With dead ends: 3002 [2022-01-28 14:36:23,596 INFO L226 Difference]: Without dead ends: 2712 [2022-01-28 14:36:23,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:23,597 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 108 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:23,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 133 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:36:23,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2712 states. [2022-01-28 14:36:23,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2712 to 1432. [2022-01-28 14:36:23,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1431 states have (on average 3.9825296995108315) internal successors, (5699), 1431 states have internal predecessors, (5699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:23,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 5699 transitions. [2022-01-28 14:36:23,627 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 5699 transitions. Word has length 25 [2022-01-28 14:36:23,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:23,627 INFO L470 AbstractCegarLoop]: Abstraction has 1432 states and 5699 transitions. [2022-01-28 14:36:23,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:23,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 5699 transitions. [2022-01-28 14:36:23,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:23,630 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:23,630 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:23,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2022-01-28 14:36:23,630 INFO L402 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:23,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:23,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1717640593, now seen corresponding path program 193 times [2022-01-28 14:36:23,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:23,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058433905] [2022-01-28 14:36:23,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:23,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:23,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:23,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:23,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:23,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058433905] [2022-01-28 14:36:23,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058433905] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:23,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:23,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:23,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122396985] [2022-01-28 14:36:23,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:23,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:23,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:23,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:23,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:23,709 INFO L87 Difference]: Start difference. First operand 1432 states and 5699 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:23,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:23,784 INFO L93 Difference]: Finished difference Result 2797 states and 10356 transitions. [2022-01-28 14:36:23,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:23,785 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:23,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:23,791 INFO L225 Difference]: With dead ends: 2797 [2022-01-28 14:36:23,791 INFO L226 Difference]: Without dead ends: 2638 [2022-01-28 14:36:23,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:23,791 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 100 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:23,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 163 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:23,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2638 states. [2022-01-28 14:36:23,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2638 to 1460. [2022-01-28 14:36:23,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1459 states have (on average 3.977381768334476) internal successors, (5803), 1459 states have internal predecessors, (5803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:23,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 5803 transitions. [2022-01-28 14:36:23,820 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 5803 transitions. Word has length 25 [2022-01-28 14:36:23,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:23,820 INFO L470 AbstractCegarLoop]: Abstraction has 1460 states and 5803 transitions. [2022-01-28 14:36:23,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:23,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 5803 transitions. [2022-01-28 14:36:23,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:23,822 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:23,822 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:23,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2022-01-28 14:36:23,822 INFO L402 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:23,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:23,822 INFO L85 PathProgramCache]: Analyzing trace with hash 127705843, now seen corresponding path program 194 times [2022-01-28 14:36:23,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:23,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863353036] [2022-01-28 14:36:23,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:23,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:23,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:23,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:23,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:23,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863353036] [2022-01-28 14:36:23,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863353036] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:23,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:23,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:23,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732126762] [2022-01-28 14:36:23,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:23,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:23,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:23,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:23,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:23,905 INFO L87 Difference]: Start difference. First operand 1460 states and 5803 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:23,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:23,991 INFO L93 Difference]: Finished difference Result 2827 states and 10449 transitions. [2022-01-28 14:36:23,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:23,992 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:23,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:23,998 INFO L225 Difference]: With dead ends: 2827 [2022-01-28 14:36:23,998 INFO L226 Difference]: Without dead ends: 2622 [2022-01-28 14:36:23,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:23,998 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 98 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:23,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 153 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:24,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2622 states. [2022-01-28 14:36:24,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2622 to 1444. [2022-01-28 14:36:24,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 3.9826749826749825) internal successors, (5747), 1443 states have internal predecessors, (5747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:24,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 5747 transitions. [2022-01-28 14:36:24,029 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 5747 transitions. Word has length 25 [2022-01-28 14:36:24,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:24,029 INFO L470 AbstractCegarLoop]: Abstraction has 1444 states and 5747 transitions. [2022-01-28 14:36:24,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:24,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 5747 transitions. [2022-01-28 14:36:24,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:24,032 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:24,032 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:24,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2022-01-28 14:36:24,032 INFO L402 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:24,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:24,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1496264077, now seen corresponding path program 195 times [2022-01-28 14:36:24,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:24,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228137265] [2022-01-28 14:36:24,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:24,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:24,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:24,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:24,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:24,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228137265] [2022-01-28 14:36:24,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228137265] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:24,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:24,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:24,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159929548] [2022-01-28 14:36:24,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:24,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:24,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:24,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:24,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:24,170 INFO L87 Difference]: Start difference. First operand 1444 states and 5747 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:24,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:24,284 INFO L93 Difference]: Finished difference Result 2795 states and 10343 transitions. [2022-01-28 14:36:24,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:24,284 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:24,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:24,292 INFO L225 Difference]: With dead ends: 2795 [2022-01-28 14:36:24,292 INFO L226 Difference]: Without dead ends: 2636 [2022-01-28 14:36:24,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:24,292 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 106 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:24,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 153 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:24,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2636 states. [2022-01-28 14:36:24,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2636 to 1460. [2022-01-28 14:36:24,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1459 states have (on average 3.971898560657985) internal successors, (5795), 1459 states have internal predecessors, (5795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:24,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 5795 transitions. [2022-01-28 14:36:24,332 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 5795 transitions. Word has length 25 [2022-01-28 14:36:24,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:24,332 INFO L470 AbstractCegarLoop]: Abstraction has 1460 states and 5795 transitions. [2022-01-28 14:36:24,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:24,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 5795 transitions. [2022-01-28 14:36:24,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:24,335 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:24,335 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:24,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2022-01-28 14:36:24,335 INFO L402 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:24,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:24,336 INFO L85 PathProgramCache]: Analyzing trace with hash -487966093, now seen corresponding path program 196 times [2022-01-28 14:36:24,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:24,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731451704] [2022-01-28 14:36:24,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:24,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:24,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:24,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:24,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:24,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731451704] [2022-01-28 14:36:24,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731451704] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:24,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:24,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:24,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526867501] [2022-01-28 14:36:24,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:24,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:24,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:24,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:24,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:24,435 INFO L87 Difference]: Start difference. First operand 1460 states and 5795 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:24,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:24,559 INFO L93 Difference]: Finished difference Result 2823 states and 10431 transitions. [2022-01-28 14:36:24,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:24,560 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:24,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:24,566 INFO L225 Difference]: With dead ends: 2823 [2022-01-28 14:36:24,566 INFO L226 Difference]: Without dead ends: 2620 [2022-01-28 14:36:24,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:24,566 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 96 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:24,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 171 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:24,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2620 states. [2022-01-28 14:36:24,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2620 to 1444. [2022-01-28 14:36:24,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 3.9771309771309773) internal successors, (5739), 1443 states have internal predecessors, (5739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:24,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 5739 transitions. [2022-01-28 14:36:24,600 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 5739 transitions. Word has length 25 [2022-01-28 14:36:24,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:24,600 INFO L470 AbstractCegarLoop]: Abstraction has 1444 states and 5739 transitions. [2022-01-28 14:36:24,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:24,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 5739 transitions. [2022-01-28 14:36:24,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:24,602 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:24,603 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:24,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2022-01-28 14:36:24,603 INFO L402 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:24,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:24,603 INFO L85 PathProgramCache]: Analyzing trace with hash -79102123, now seen corresponding path program 197 times [2022-01-28 14:36:24,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:24,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622207677] [2022-01-28 14:36:24,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:24,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:24,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:24,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:24,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:24,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622207677] [2022-01-28 14:36:24,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622207677] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:24,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:24,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:24,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140738643] [2022-01-28 14:36:24,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:24,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:24,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:24,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:24,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:24,688 INFO L87 Difference]: Start difference. First operand 1444 states and 5739 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:24,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:24,783 INFO L93 Difference]: Finished difference Result 2869 states and 10612 transitions. [2022-01-28 14:36:24,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:24,783 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:24,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:24,789 INFO L225 Difference]: With dead ends: 2869 [2022-01-28 14:36:24,790 INFO L226 Difference]: Without dead ends: 2680 [2022-01-28 14:36:24,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:24,790 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 102 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:24,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 151 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:24,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2680 states. [2022-01-28 14:36:24,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2680 to 1474. [2022-01-28 14:36:24,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1473 states have (on average 3.9592668024439917) internal successors, (5832), 1473 states have internal predecessors, (5832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:24,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 5832 transitions. [2022-01-28 14:36:24,820 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 5832 transitions. Word has length 25 [2022-01-28 14:36:24,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:24,820 INFO L470 AbstractCegarLoop]: Abstraction has 1474 states and 5832 transitions. [2022-01-28 14:36:24,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:24,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 5832 transitions. [2022-01-28 14:36:24,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:24,823 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:24,823 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:24,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2022-01-28 14:36:24,823 INFO L402 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:24,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:24,823 INFO L85 PathProgramCache]: Analyzing trace with hash -2122439117, now seen corresponding path program 198 times [2022-01-28 14:36:24,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:24,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351048676] [2022-01-28 14:36:24,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:24,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:24,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:24,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:24,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:24,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351048676] [2022-01-28 14:36:24,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351048676] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:24,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:24,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:24,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592586066] [2022-01-28 14:36:24,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:24,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:24,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:24,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:24,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:24,903 INFO L87 Difference]: Start difference. First operand 1474 states and 5832 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:25,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:25,027 INFO L93 Difference]: Finished difference Result 2867 states and 10577 transitions. [2022-01-28 14:36:25,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:25,028 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:25,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:25,035 INFO L225 Difference]: With dead ends: 2867 [2022-01-28 14:36:25,035 INFO L226 Difference]: Without dead ends: 2642 [2022-01-28 14:36:25,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:25,036 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 100 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:25,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 158 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:25,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2642 states. [2022-01-28 14:36:25,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2642 to 1436. [2022-01-28 14:36:25,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1435 states have (on average 3.9825783972125435) internal successors, (5715), 1435 states have internal predecessors, (5715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:25,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 5715 transitions. [2022-01-28 14:36:25,070 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 5715 transitions. Word has length 25 [2022-01-28 14:36:25,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:25,070 INFO L470 AbstractCegarLoop]: Abstraction has 1436 states and 5715 transitions. [2022-01-28 14:36:25,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:25,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 5715 transitions. [2022-01-28 14:36:25,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:25,073 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:25,073 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:25,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2022-01-28 14:36:25,073 INFO L402 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:25,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:25,073 INFO L85 PathProgramCache]: Analyzing trace with hash 543680883, now seen corresponding path program 199 times [2022-01-28 14:36:25,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:25,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530511866] [2022-01-28 14:36:25,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:25,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:25,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:25,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:25,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:25,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530511866] [2022-01-28 14:36:25,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530511866] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:25,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:25,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:25,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124665608] [2022-01-28 14:36:25,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:25,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:25,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:25,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:25,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:25,199 INFO L87 Difference]: Start difference. First operand 1436 states and 5715 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:25,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:25,285 INFO L93 Difference]: Finished difference Result 2763 states and 10225 transitions. [2022-01-28 14:36:25,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:25,286 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:25,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:25,292 INFO L225 Difference]: With dead ends: 2763 [2022-01-28 14:36:25,293 INFO L226 Difference]: Without dead ends: 2604 [2022-01-28 14:36:25,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:25,293 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 102 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:25,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 160 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:25,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2604 states. [2022-01-28 14:36:25,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2604 to 1460. [2022-01-28 14:36:25,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1459 states have (on average 3.9746401644962304) internal successors, (5799), 1459 states have internal predecessors, (5799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:25,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 5799 transitions. [2022-01-28 14:36:25,324 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 5799 transitions. Word has length 25 [2022-01-28 14:36:25,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:25,324 INFO L470 AbstractCegarLoop]: Abstraction has 1460 states and 5799 transitions. [2022-01-28 14:36:25,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:25,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 5799 transitions. [2022-01-28 14:36:25,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:25,327 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:25,327 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:25,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2022-01-28 14:36:25,327 INFO L402 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:25,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:25,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1046253867, now seen corresponding path program 200 times [2022-01-28 14:36:25,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:25,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967611573] [2022-01-28 14:36:25,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:25,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:25,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:25,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:25,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:25,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967611573] [2022-01-28 14:36:25,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967611573] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:25,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:25,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:25,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570470593] [2022-01-28 14:36:25,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:25,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:25,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:25,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:25,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:25,409 INFO L87 Difference]: Start difference. First operand 1460 states and 5799 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:25,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:25,483 INFO L93 Difference]: Finished difference Result 2793 states and 10318 transitions. [2022-01-28 14:36:25,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:25,484 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:25,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:25,492 INFO L225 Difference]: With dead ends: 2793 [2022-01-28 14:36:25,492 INFO L226 Difference]: Without dead ends: 2588 [2022-01-28 14:36:25,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:25,492 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 136 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:25,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 128 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:36:25,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2588 states. [2022-01-28 14:36:25,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2588 to 1444. [2022-01-28 14:36:25,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 3.9799029799029797) internal successors, (5743), 1443 states have internal predecessors, (5743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:25,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 5743 transitions. [2022-01-28 14:36:25,524 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 5743 transitions. Word has length 25 [2022-01-28 14:36:25,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:25,524 INFO L470 AbstractCegarLoop]: Abstraction has 1444 states and 5743 transitions. [2022-01-28 14:36:25,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:25,524 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 5743 transitions. [2022-01-28 14:36:25,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:25,526 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:25,527 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:25,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2022-01-28 14:36:25,527 INFO L402 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:25,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:25,527 INFO L85 PathProgramCache]: Analyzing trace with hash 593248627, now seen corresponding path program 201 times [2022-01-28 14:36:25,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:25,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996689987] [2022-01-28 14:36:25,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:25,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:25,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:25,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:25,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:25,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996689987] [2022-01-28 14:36:25,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996689987] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:25,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:25,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:25,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715683689] [2022-01-28 14:36:25,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:25,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:25,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:25,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:25,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:25,616 INFO L87 Difference]: Start difference. First operand 1444 states and 5743 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:25,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:25,696 INFO L93 Difference]: Finished difference Result 2717 states and 10060 transitions. [2022-01-28 14:36:25,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:25,697 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:25,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:25,703 INFO L225 Difference]: With dead ends: 2717 [2022-01-28 14:36:25,703 INFO L226 Difference]: Without dead ends: 2558 [2022-01-28 14:36:25,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:25,703 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 105 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:25,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 159 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:25,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2558 states. [2022-01-28 14:36:25,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2558 to 1460. [2022-01-28 14:36:25,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1459 states have (on average 3.9691569568197393) internal successors, (5791), 1459 states have internal predecessors, (5791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:25,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 5791 transitions. [2022-01-28 14:36:25,734 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 5791 transitions. Word has length 25 [2022-01-28 14:36:25,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:25,734 INFO L470 AbstractCegarLoop]: Abstraction has 1460 states and 5791 transitions. [2022-01-28 14:36:25,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:25,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 5791 transitions. [2022-01-28 14:36:25,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:25,737 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:25,737 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:25,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2022-01-28 14:36:25,737 INFO L402 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:25,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:25,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1349023373, now seen corresponding path program 202 times [2022-01-28 14:36:25,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:25,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499937474] [2022-01-28 14:36:25,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:25,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:25,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:25,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:25,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499937474] [2022-01-28 14:36:25,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499937474] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:25,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:25,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:25,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841142672] [2022-01-28 14:36:25,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:25,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:25,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:25,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:25,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:25,820 INFO L87 Difference]: Start difference. First operand 1460 states and 5791 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:25,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:25,919 INFO L93 Difference]: Finished difference Result 2605 states and 9723 transitions. [2022-01-28 14:36:25,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:25,919 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:25,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:25,925 INFO L225 Difference]: With dead ends: 2605 [2022-01-28 14:36:25,925 INFO L226 Difference]: Without dead ends: 2414 [2022-01-28 14:36:25,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:25,925 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 85 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:25,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 178 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:25,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2414 states. [2022-01-28 14:36:25,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2414 to 1444. [2022-01-28 14:36:25,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 3.9743589743589745) internal successors, (5735), 1443 states have internal predecessors, (5735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:25,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 5735 transitions. [2022-01-28 14:36:25,953 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 5735 transitions. Word has length 25 [2022-01-28 14:36:25,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:25,953 INFO L470 AbstractCegarLoop]: Abstraction has 1444 states and 5735 transitions. [2022-01-28 14:36:25,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:25,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 5735 transitions. [2022-01-28 14:36:25,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:25,956 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:25,956 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:25,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2022-01-28 14:36:25,956 INFO L402 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:25,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:25,956 INFO L85 PathProgramCache]: Analyzing trace with hash 2010410581, now seen corresponding path program 203 times [2022-01-28 14:36:25,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:25,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786380052] [2022-01-28 14:36:25,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:25,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:25,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:26,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:26,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:26,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786380052] [2022-01-28 14:36:26,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786380052] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:26,033 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:26,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:26,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838826954] [2022-01-28 14:36:26,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:26,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:26,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:26,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:26,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:26,034 INFO L87 Difference]: Start difference. First operand 1444 states and 5735 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:26,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:26,122 INFO L93 Difference]: Finished difference Result 2755 states and 10197 transitions. [2022-01-28 14:36:26,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:26,122 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:26,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:26,129 INFO L225 Difference]: With dead ends: 2755 [2022-01-28 14:36:26,129 INFO L226 Difference]: Without dead ends: 2566 [2022-01-28 14:36:26,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:26,129 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 99 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:26,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 159 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:26,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2566 states. [2022-01-28 14:36:26,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2566 to 1468. [2022-01-28 14:36:26,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1467 states have (on average 3.9611451942740286) internal successors, (5811), 1467 states have internal predecessors, (5811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:26,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 5811 transitions. [2022-01-28 14:36:26,158 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 5811 transitions. Word has length 25 [2022-01-28 14:36:26,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:26,158 INFO L470 AbstractCegarLoop]: Abstraction has 1468 states and 5811 transitions. [2022-01-28 14:36:26,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:26,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 5811 transitions. [2022-01-28 14:36:26,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:26,161 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:26,161 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:26,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2022-01-28 14:36:26,161 INFO L402 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:26,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:26,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1269458483, now seen corresponding path program 204 times [2022-01-28 14:36:26,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:26,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104740055] [2022-01-28 14:36:26,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:26,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:26,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:26,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:26,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:26,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104740055] [2022-01-28 14:36:26,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104740055] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:26,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:26,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:26,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100001959] [2022-01-28 14:36:26,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:26,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:26,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:26,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:26,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:26,248 INFO L87 Difference]: Start difference. First operand 1468 states and 5811 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:26,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:26,330 INFO L93 Difference]: Finished difference Result 2613 states and 9743 transitions. [2022-01-28 14:36:26,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:26,330 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:26,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:26,336 INFO L225 Difference]: With dead ends: 2613 [2022-01-28 14:36:26,336 INFO L226 Difference]: Without dead ends: 2406 [2022-01-28 14:36:26,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:26,336 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 94 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:26,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 154 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:26,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2406 states. [2022-01-28 14:36:26,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2406 to 1436. [2022-01-28 14:36:26,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1435 states have (on average 3.9797909407665504) internal successors, (5711), 1435 states have internal predecessors, (5711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:26,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 5711 transitions. [2022-01-28 14:36:26,364 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 5711 transitions. Word has length 25 [2022-01-28 14:36:26,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:26,365 INFO L470 AbstractCegarLoop]: Abstraction has 1436 states and 5711 transitions. [2022-01-28 14:36:26,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:26,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 5711 transitions. [2022-01-28 14:36:26,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:26,367 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:26,367 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:26,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2022-01-28 14:36:26,367 INFO L402 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:26,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:26,367 INFO L85 PathProgramCache]: Analyzing trace with hash 931685845, now seen corresponding path program 205 times [2022-01-28 14:36:26,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:26,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625928669] [2022-01-28 14:36:26,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:26,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:26,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:26,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:26,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625928669] [2022-01-28 14:36:26,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625928669] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:26,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:26,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:26,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514466990] [2022-01-28 14:36:26,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:26,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:26,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:26,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:26,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:26,477 INFO L87 Difference]: Start difference. First operand 1436 states and 5711 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:26,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:26,578 INFO L93 Difference]: Finished difference Result 2759 states and 10211 transitions. [2022-01-28 14:36:26,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:26,579 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:26,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:26,584 INFO L225 Difference]: With dead ends: 2759 [2022-01-28 14:36:26,585 INFO L226 Difference]: Without dead ends: 2600 [2022-01-28 14:36:26,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:26,585 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 110 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:26,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 153 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:26,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2600 states. [2022-01-28 14:36:26,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2600 to 1460. [2022-01-28 14:36:26,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1459 states have (on average 3.971898560657985) internal successors, (5795), 1459 states have internal predecessors, (5795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:26,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 5795 transitions. [2022-01-28 14:36:26,610 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 5795 transitions. Word has length 25 [2022-01-28 14:36:26,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:26,611 INFO L470 AbstractCegarLoop]: Abstraction has 1460 states and 5795 transitions. [2022-01-28 14:36:26,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:26,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 5795 transitions. [2022-01-28 14:36:26,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:26,613 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:26,613 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:26,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2022-01-28 14:36:26,613 INFO L402 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:26,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:26,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1939983829, now seen corresponding path program 206 times [2022-01-28 14:36:26,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:26,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828586710] [2022-01-28 14:36:26,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:26,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:26,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:26,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:26,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828586710] [2022-01-28 14:36:26,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828586710] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:26,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:26,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:26,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715565509] [2022-01-28 14:36:26,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:26,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:26,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:26,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:26,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:26,725 INFO L87 Difference]: Start difference. First operand 1460 states and 5795 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:26,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:26,842 INFO L93 Difference]: Finished difference Result 2787 states and 10299 transitions. [2022-01-28 14:36:26,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:26,843 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:26,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:26,850 INFO L225 Difference]: With dead ends: 2787 [2022-01-28 14:36:26,850 INFO L226 Difference]: Without dead ends: 2584 [2022-01-28 14:36:26,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:26,850 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 115 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:26,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 143 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:26,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2584 states. [2022-01-28 14:36:26,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2584 to 1444. [2022-01-28 14:36:26,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 3.9771309771309773) internal successors, (5739), 1443 states have internal predecessors, (5739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:26,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 5739 transitions. [2022-01-28 14:36:26,875 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 5739 transitions. Word has length 25 [2022-01-28 14:36:26,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:26,875 INFO L470 AbstractCegarLoop]: Abstraction has 1444 states and 5739 transitions. [2022-01-28 14:36:26,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:26,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 5739 transitions. [2022-01-28 14:36:26,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:26,878 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:26,878 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:26,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2022-01-28 14:36:26,878 INFO L402 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:26,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:26,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1184393805, now seen corresponding path program 207 times [2022-01-28 14:36:26,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:26,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885769633] [2022-01-28 14:36:26,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:26,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:27,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:27,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:27,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885769633] [2022-01-28 14:36:27,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885769633] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:27,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:27,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:27,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761382741] [2022-01-28 14:36:27,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:27,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:27,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:27,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:27,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:27,036 INFO L87 Difference]: Start difference. First operand 1444 states and 5739 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:27,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:27,146 INFO L93 Difference]: Finished difference Result 2715 states and 10051 transitions. [2022-01-28 14:36:27,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:27,147 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:27,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:27,153 INFO L225 Difference]: With dead ends: 2715 [2022-01-28 14:36:27,153 INFO L226 Difference]: Without dead ends: 2556 [2022-01-28 14:36:27,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:27,153 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 104 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:27,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 157 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:27,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2556 states. [2022-01-28 14:36:27,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2556 to 1460. [2022-01-28 14:36:27,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1459 states have (on average 3.9664153529814943) internal successors, (5787), 1459 states have internal predecessors, (5787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:27,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 5787 transitions. [2022-01-28 14:36:27,179 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 5787 transitions. Word has length 25 [2022-01-28 14:36:27,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:27,179 INFO L470 AbstractCegarLoop]: Abstraction has 1460 states and 5787 transitions. [2022-01-28 14:36:27,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:27,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 5787 transitions. [2022-01-28 14:36:27,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:27,181 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:27,181 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:27,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2022-01-28 14:36:27,181 INFO L402 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:27,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:27,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1829925419, now seen corresponding path program 208 times [2022-01-28 14:36:27,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:27,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417942672] [2022-01-28 14:36:27,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:27,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:27,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:27,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:27,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:27,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417942672] [2022-01-28 14:36:27,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417942672] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:27,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:27,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:27,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403474296] [2022-01-28 14:36:27,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:27,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:27,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:27,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:27,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:27,323 INFO L87 Difference]: Start difference. First operand 1460 states and 5787 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:27,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:27,452 INFO L93 Difference]: Finished difference Result 2603 states and 9714 transitions. [2022-01-28 14:36:27,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:27,453 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:27,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:27,460 INFO L225 Difference]: With dead ends: 2603 [2022-01-28 14:36:27,460 INFO L226 Difference]: Without dead ends: 2412 [2022-01-28 14:36:27,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:27,461 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 91 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:27,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 160 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:27,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2022-01-28 14:36:27,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 1444. [2022-01-28 14:36:27,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 3.9715869715869716) internal successors, (5731), 1443 states have internal predecessors, (5731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:27,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 5731 transitions. [2022-01-28 14:36:27,507 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 5731 transitions. Word has length 25 [2022-01-28 14:36:27,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:27,507 INFO L470 AbstractCegarLoop]: Abstraction has 1444 states and 5731 transitions. [2022-01-28 14:36:27,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:27,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 5731 transitions. [2022-01-28 14:36:27,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:27,510 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:27,510 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:27,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2022-01-28 14:36:27,510 INFO L402 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:27,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:27,511 INFO L85 PathProgramCache]: Analyzing trace with hash -567601707, now seen corresponding path program 209 times [2022-01-28 14:36:27,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:27,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267631213] [2022-01-28 14:36:27,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:27,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:27,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:27,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:27,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:27,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267631213] [2022-01-28 14:36:27,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267631213] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:27,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:27,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:27,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450713819] [2022-01-28 14:36:27,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:27,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:27,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:27,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:27,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:27,588 INFO L87 Difference]: Start difference. First operand 1444 states and 5731 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:27,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:27,669 INFO L93 Difference]: Finished difference Result 2751 states and 10183 transitions. [2022-01-28 14:36:27,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:27,670 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:27,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:27,676 INFO L225 Difference]: With dead ends: 2751 [2022-01-28 14:36:27,676 INFO L226 Difference]: Without dead ends: 2564 [2022-01-28 14:36:27,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:27,676 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 101 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:27,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 158 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:27,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2564 states. [2022-01-28 14:36:27,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2564 to 1468. [2022-01-28 14:36:27,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1467 states have (on average 3.958418541240627) internal successors, (5807), 1467 states have internal predecessors, (5807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:27,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 5807 transitions. [2022-01-28 14:36:27,708 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 5807 transitions. Word has length 25 [2022-01-28 14:36:27,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:27,708 INFO L470 AbstractCegarLoop]: Abstraction has 1468 states and 5807 transitions. [2022-01-28 14:36:27,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:27,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 5807 transitions. [2022-01-28 14:36:27,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:27,710 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:27,710 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:27,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2022-01-28 14:36:27,710 INFO L402 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:27,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:27,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1959746253, now seen corresponding path program 210 times [2022-01-28 14:36:27,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:27,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592135224] [2022-01-28 14:36:27,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:27,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:27,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:27,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:27,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:27,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592135224] [2022-01-28 14:36:27,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592135224] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:27,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:27,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:27,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025885408] [2022-01-28 14:36:27,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:27,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:27,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:27,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:27,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:27,789 INFO L87 Difference]: Start difference. First operand 1468 states and 5807 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:27,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:27,880 INFO L93 Difference]: Finished difference Result 2611 states and 9734 transitions. [2022-01-28 14:36:27,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:27,880 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:27,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:27,886 INFO L225 Difference]: With dead ends: 2611 [2022-01-28 14:36:27,886 INFO L226 Difference]: Without dead ends: 2404 [2022-01-28 14:36:27,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:27,886 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 86 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:27,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 156 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:27,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2404 states. [2022-01-28 14:36:27,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2404 to 1436. [2022-01-28 14:36:27,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1435 states have (on average 3.9770034843205573) internal successors, (5707), 1435 states have internal predecessors, (5707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:27,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 5707 transitions. [2022-01-28 14:36:27,915 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 5707 transitions. Word has length 25 [2022-01-28 14:36:27,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:27,915 INFO L470 AbstractCegarLoop]: Abstraction has 1436 states and 5707 transitions. [2022-01-28 14:36:27,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:27,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 5707 transitions. [2022-01-28 14:36:27,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:27,917 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:27,917 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:27,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2022-01-28 14:36:27,918 INFO L402 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:27,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:27,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1655790135, now seen corresponding path program 211 times [2022-01-28 14:36:27,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:27,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51945681] [2022-01-28 14:36:27,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:27,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:27,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:27,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:27,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:27,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51945681] [2022-01-28 14:36:27,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51945681] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:27,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:27,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:27,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062901057] [2022-01-28 14:36:27,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:27,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:27,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:27,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:27,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:27,996 INFO L87 Difference]: Start difference. First operand 1436 states and 5707 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:28,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:28,079 INFO L93 Difference]: Finished difference Result 2875 states and 10649 transitions. [2022-01-28 14:36:28,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:28,079 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:28,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:28,086 INFO L225 Difference]: With dead ends: 2875 [2022-01-28 14:36:28,086 INFO L226 Difference]: Without dead ends: 2686 [2022-01-28 14:36:28,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:28,087 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 110 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:28,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 141 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:36:28,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2022-01-28 14:36:28,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 1478. [2022-01-28 14:36:28,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1477 states have (on average 3.964793500338524) internal successors, (5856), 1477 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:28,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 5856 transitions. [2022-01-28 14:36:28,120 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 5856 transitions. Word has length 25 [2022-01-28 14:36:28,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:28,120 INFO L470 AbstractCegarLoop]: Abstraction has 1478 states and 5856 transitions. [2022-01-28 14:36:28,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:28,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 5856 transitions. [2022-01-28 14:36:28,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:28,122 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:28,122 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:28,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2022-01-28 14:36:28,123 INFO L402 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:28,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:28,123 INFO L85 PathProgramCache]: Analyzing trace with hash -387546859, now seen corresponding path program 212 times [2022-01-28 14:36:28,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:28,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13377540] [2022-01-28 14:36:28,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:28,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:28,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:28,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:28,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:28,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13377540] [2022-01-28 14:36:28,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13377540] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:28,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:28,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:28,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585974798] [2022-01-28 14:36:28,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:28,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:28,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:28,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:28,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:28,209 INFO L87 Difference]: Start difference. First operand 1478 states and 5856 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:28,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:28,294 INFO L93 Difference]: Finished difference Result 2873 states and 10614 transitions. [2022-01-28 14:36:28,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:28,294 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:28,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:28,300 INFO L225 Difference]: With dead ends: 2873 [2022-01-28 14:36:28,301 INFO L226 Difference]: Without dead ends: 2656 [2022-01-28 14:36:28,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:28,301 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 95 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:28,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 161 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:28,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2656 states. [2022-01-28 14:36:28,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2656 to 1448. [2022-01-28 14:36:28,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1447 states have (on average 3.9744298548721493) internal successors, (5751), 1447 states have internal predecessors, (5751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:28,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5751 transitions. [2022-01-28 14:36:28,334 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5751 transitions. Word has length 25 [2022-01-28 14:36:28,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:28,334 INFO L470 AbstractCegarLoop]: Abstraction has 1448 states and 5751 transitions. [2022-01-28 14:36:28,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:28,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5751 transitions. [2022-01-28 14:36:28,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:28,336 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:28,336 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:28,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2022-01-28 14:36:28,337 INFO L402 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:28,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:28,337 INFO L85 PathProgramCache]: Analyzing trace with hash -460289515, now seen corresponding path program 213 times [2022-01-28 14:36:28,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:28,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129627630] [2022-01-28 14:36:28,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:28,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:28,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:28,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:28,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:28,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129627630] [2022-01-28 14:36:28,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129627630] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:28,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:28,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:28,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206408401] [2022-01-28 14:36:28,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:28,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:28,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:28,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:28,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:28,415 INFO L87 Difference]: Start difference. First operand 1448 states and 5751 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:28,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:28,498 INFO L93 Difference]: Finished difference Result 2795 states and 10353 transitions. [2022-01-28 14:36:28,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:28,498 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:28,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:28,506 INFO L225 Difference]: With dead ends: 2795 [2022-01-28 14:36:28,507 INFO L226 Difference]: Without dead ends: 2606 [2022-01-28 14:36:28,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:28,507 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 101 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:28,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 149 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:36:28,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2606 states. [2022-01-28 14:36:28,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2606 to 1472. [2022-01-28 14:36:28,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1471 states have (on average 3.9612508497620667) internal successors, (5827), 1471 states have internal predecessors, (5827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:28,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5827 transitions. [2022-01-28 14:36:28,541 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5827 transitions. Word has length 25 [2022-01-28 14:36:28,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:28,541 INFO L470 AbstractCegarLoop]: Abstraction has 1472 states and 5827 transitions. [2022-01-28 14:36:28,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:28,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5827 transitions. [2022-01-28 14:36:28,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:28,544 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:28,544 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:28,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2022-01-28 14:36:28,544 INFO L402 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:28,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:28,544 INFO L85 PathProgramCache]: Analyzing trace with hash 95498773, now seen corresponding path program 214 times [2022-01-28 14:36:28,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:28,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255685909] [2022-01-28 14:36:28,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:28,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:28,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:28,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:28,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:28,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255685909] [2022-01-28 14:36:28,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255685909] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:28,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:28,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:28,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556490068] [2022-01-28 14:36:28,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:28,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:28,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:28,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:28,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:28,644 INFO L87 Difference]: Start difference. First operand 1472 states and 5827 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:28,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:28,732 INFO L93 Difference]: Finished difference Result 2653 states and 9899 transitions. [2022-01-28 14:36:28,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:28,733 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:28,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:28,739 INFO L225 Difference]: With dead ends: 2653 [2022-01-28 14:36:28,739 INFO L226 Difference]: Without dead ends: 2454 [2022-01-28 14:36:28,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:28,739 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 95 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:28,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 147 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:28,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2454 states. [2022-01-28 14:36:28,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2454 to 1448. [2022-01-28 14:36:28,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1447 states have (on average 3.9661368348306842) internal successors, (5739), 1447 states have internal predecessors, (5739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:28,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5739 transitions. [2022-01-28 14:36:28,769 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5739 transitions. Word has length 25 [2022-01-28 14:36:28,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:28,769 INFO L470 AbstractCegarLoop]: Abstraction has 1448 states and 5739 transitions. [2022-01-28 14:36:28,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:28,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5739 transitions. [2022-01-28 14:36:28,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:28,771 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:28,771 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:28,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2022-01-28 14:36:28,772 INFO L402 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:28,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:28,772 INFO L85 PathProgramCache]: Analyzing trace with hash 522058099, now seen corresponding path program 215 times [2022-01-28 14:36:28,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:28,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141804042] [2022-01-28 14:36:28,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:28,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:28,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:28,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:28,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:28,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141804042] [2022-01-28 14:36:28,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141804042] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:28,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:28,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:28,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962163577] [2022-01-28 14:36:28,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:28,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:28,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:28,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:28,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:28,857 INFO L87 Difference]: Start difference. First operand 1448 states and 5739 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:28,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:28,931 INFO L93 Difference]: Finished difference Result 2793 states and 10336 transitions. [2022-01-28 14:36:28,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:28,931 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:28,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:28,937 INFO L225 Difference]: With dead ends: 2793 [2022-01-28 14:36:28,937 INFO L226 Difference]: Without dead ends: 2606 [2022-01-28 14:36:28,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:28,938 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 111 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:28,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 135 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:36:28,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2606 states. [2022-01-28 14:36:28,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2606 to 1472. [2022-01-28 14:36:28,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1471 states have (on average 3.9530931339225015) internal successors, (5815), 1471 states have internal predecessors, (5815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:28,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5815 transitions. [2022-01-28 14:36:28,969 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5815 transitions. Word has length 25 [2022-01-28 14:36:28,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:28,969 INFO L470 AbstractCegarLoop]: Abstraction has 1472 states and 5815 transitions. [2022-01-28 14:36:28,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:28,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5815 transitions. [2022-01-28 14:36:28,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:28,972 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:28,972 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:28,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2022-01-28 14:36:28,972 INFO L402 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:28,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:28,972 INFO L85 PathProgramCache]: Analyzing trace with hash 315250133, now seen corresponding path program 216 times [2022-01-28 14:36:28,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:28,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748933335] [2022-01-28 14:36:28,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:28,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:28,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:29,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:29,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:29,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748933335] [2022-01-28 14:36:29,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748933335] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:29,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:29,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:29,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490473396] [2022-01-28 14:36:29,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:29,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:29,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:29,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:29,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:29,046 INFO L87 Difference]: Start difference. First operand 1472 states and 5815 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:29,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:29,154 INFO L93 Difference]: Finished difference Result 2653 states and 9887 transitions. [2022-01-28 14:36:29,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:29,154 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:29,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:29,160 INFO L225 Difference]: With dead ends: 2653 [2022-01-28 14:36:29,160 INFO L226 Difference]: Without dead ends: 2438 [2022-01-28 14:36:29,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:29,161 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 80 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:29,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 197 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:29,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2438 states. [2022-01-28 14:36:29,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2438 to 1432. [2022-01-28 14:36:29,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1431 states have (on average 3.981132075471698) internal successors, (5697), 1431 states have internal predecessors, (5697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:29,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 5697 transitions. [2022-01-28 14:36:29,199 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 5697 transitions. Word has length 25 [2022-01-28 14:36:29,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:29,199 INFO L470 AbstractCegarLoop]: Abstraction has 1432 states and 5697 transitions. [2022-01-28 14:36:29,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:29,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 5697 transitions. [2022-01-28 14:36:29,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:29,202 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:29,202 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:29,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2022-01-28 14:36:29,202 INFO L402 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:29,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:29,203 INFO L85 PathProgramCache]: Analyzing trace with hash -312606951, now seen corresponding path program 217 times [2022-01-28 14:36:29,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:29,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619040582] [2022-01-28 14:36:29,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:29,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:29,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:29,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:29,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619040582] [2022-01-28 14:36:29,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619040582] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:29,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:29,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:29,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736117950] [2022-01-28 14:36:29,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:29,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:29,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:29,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:29,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:29,333 INFO L87 Difference]: Start difference. First operand 1432 states and 5697 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:29,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:29,438 INFO L93 Difference]: Finished difference Result 3154 states and 11754 transitions. [2022-01-28 14:36:29,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:29,438 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:29,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:29,446 INFO L225 Difference]: With dead ends: 3154 [2022-01-28 14:36:29,446 INFO L226 Difference]: Without dead ends: 2965 [2022-01-28 14:36:29,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:29,446 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 102 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:29,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 178 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:29,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2965 states. [2022-01-28 14:36:29,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2965 to 1492. [2022-01-28 14:36:29,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1492 states, 1491 states have (on average 3.9738430583501008) internal successors, (5925), 1491 states have internal predecessors, (5925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:29,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 5925 transitions. [2022-01-28 14:36:29,484 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 5925 transitions. Word has length 25 [2022-01-28 14:36:29,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:29,484 INFO L470 AbstractCegarLoop]: Abstraction has 1492 states and 5925 transitions. [2022-01-28 14:36:29,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:29,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 5925 transitions. [2022-01-28 14:36:29,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:29,487 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:29,487 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:29,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2022-01-28 14:36:29,487 INFO L402 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:29,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:29,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1939023351, now seen corresponding path program 218 times [2022-01-28 14:36:29,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:29,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125518338] [2022-01-28 14:36:29,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:29,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:29,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:29,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:29,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125518338] [2022-01-28 14:36:29,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125518338] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:29,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:29,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:29,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520326486] [2022-01-28 14:36:29,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:29,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:29,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:29,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:29,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:29,568 INFO L87 Difference]: Start difference. First operand 1492 states and 5925 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:29,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:29,660 INFO L93 Difference]: Finished difference Result 3152 states and 11719 transitions. [2022-01-28 14:36:29,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:29,660 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:29,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:29,668 INFO L225 Difference]: With dead ends: 3152 [2022-01-28 14:36:29,668 INFO L226 Difference]: Without dead ends: 2935 [2022-01-28 14:36:29,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:29,668 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 108 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:29,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 159 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:29,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2935 states. [2022-01-28 14:36:29,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2935 to 1462. [2022-01-28 14:36:29,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1462 states, 1461 states have (on average 3.9835728952772076) internal successors, (5820), 1461 states have internal predecessors, (5820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:29,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 5820 transitions. [2022-01-28 14:36:29,701 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 5820 transitions. Word has length 25 [2022-01-28 14:36:29,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:29,701 INFO L470 AbstractCegarLoop]: Abstraction has 1462 states and 5820 transitions. [2022-01-28 14:36:29,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:29,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 5820 transitions. [2022-01-28 14:36:29,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:29,704 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:29,704 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:29,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2022-01-28 14:36:29,704 INFO L402 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:29,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:29,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1866280695, now seen corresponding path program 219 times [2022-01-28 14:36:29,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:29,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007184924] [2022-01-28 14:36:29,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:29,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:29,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:29,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:29,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:29,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007184924] [2022-01-28 14:36:29,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007184924] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:29,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:29,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:29,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094302809] [2022-01-28 14:36:29,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:29,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:29,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:29,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:29,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:29,786 INFO L87 Difference]: Start difference. First operand 1462 states and 5820 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:29,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:29,872 INFO L93 Difference]: Finished difference Result 3136 states and 11679 transitions. [2022-01-28 14:36:29,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:29,872 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:29,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:29,880 INFO L225 Difference]: With dead ends: 3136 [2022-01-28 14:36:29,880 INFO L226 Difference]: Without dead ends: 2947 [2022-01-28 14:36:29,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:29,880 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 113 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:29,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 143 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:29,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2947 states. [2022-01-28 14:36:29,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2947 to 1486. [2022-01-28 14:36:29,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1485 states have (on average 3.9703703703703703) internal successors, (5896), 1485 states have internal predecessors, (5896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:29,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5896 transitions. [2022-01-28 14:36:29,914 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5896 transitions. Word has length 25 [2022-01-28 14:36:29,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:29,914 INFO L470 AbstractCegarLoop]: Abstraction has 1486 states and 5896 transitions. [2022-01-28 14:36:29,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:29,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5896 transitions. [2022-01-28 14:36:29,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:29,916 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:29,917 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:29,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2022-01-28 14:36:29,917 INFO L402 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:29,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:29,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1872898313, now seen corresponding path program 220 times [2022-01-28 14:36:29,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:29,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127549270] [2022-01-28 14:36:29,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:29,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:29,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:29,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:29,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:29,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127549270] [2022-01-28 14:36:29,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127549270] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:29,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:29,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:29,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481343177] [2022-01-28 14:36:29,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:29,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:29,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:29,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:29,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:29,996 INFO L87 Difference]: Start difference. First operand 1486 states and 5896 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:30,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:30,089 INFO L93 Difference]: Finished difference Result 3122 states and 11610 transitions. [2022-01-28 14:36:30,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:30,089 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:30,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:30,096 INFO L225 Difference]: With dead ends: 3122 [2022-01-28 14:36:30,096 INFO L226 Difference]: Without dead ends: 2923 [2022-01-28 14:36:30,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:30,097 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 100 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:30,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 146 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:30,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2022-01-28 14:36:30,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 1462. [2022-01-28 14:36:30,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1462 states, 1461 states have (on average 3.975359342915811) internal successors, (5808), 1461 states have internal predecessors, (5808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:30,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 5808 transitions. [2022-01-28 14:36:30,129 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 5808 transitions. Word has length 25 [2022-01-28 14:36:30,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:30,129 INFO L470 AbstractCegarLoop]: Abstraction has 1462 states and 5808 transitions. [2022-01-28 14:36:30,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:30,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 5808 transitions. [2022-01-28 14:36:30,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:30,132 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:30,132 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:30,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2022-01-28 14:36:30,132 INFO L402 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:30,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:30,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1446338987, now seen corresponding path program 221 times [2022-01-28 14:36:30,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:30,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730705347] [2022-01-28 14:36:30,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:30,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:30,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:30,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:30,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:30,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730705347] [2022-01-28 14:36:30,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730705347] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:30,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:30,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:30,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235899849] [2022-01-28 14:36:30,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:30,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:30,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:30,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:30,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:30,246 INFO L87 Difference]: Start difference. First operand 1462 states and 5808 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:30,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:30,376 INFO L93 Difference]: Finished difference Result 3132 states and 11657 transitions. [2022-01-28 14:36:30,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:30,376 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:30,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:30,384 INFO L225 Difference]: With dead ends: 3132 [2022-01-28 14:36:30,384 INFO L226 Difference]: Without dead ends: 2945 [2022-01-28 14:36:30,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:30,384 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 102 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:30,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 144 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:30,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2022-01-28 14:36:30,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 1486. [2022-01-28 14:36:30,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1485 states have (on average 3.962289562289562) internal successors, (5884), 1485 states have internal predecessors, (5884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:30,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 5884 transitions. [2022-01-28 14:36:30,418 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 5884 transitions. Word has length 25 [2022-01-28 14:36:30,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:30,418 INFO L470 AbstractCegarLoop]: Abstraction has 1486 states and 5884 transitions. [2022-01-28 14:36:30,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:30,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 5884 transitions. [2022-01-28 14:36:30,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:30,421 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:30,421 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:30,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2022-01-28 14:36:30,421 INFO L402 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:30,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:30,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1653146953, now seen corresponding path program 222 times [2022-01-28 14:36:30,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:30,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637477123] [2022-01-28 14:36:30,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:30,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:30,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:30,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:30,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637477123] [2022-01-28 14:36:30,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637477123] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:30,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:30,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:30,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725589439] [2022-01-28 14:36:30,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:30,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:30,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:30,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:30,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:30,518 INFO L87 Difference]: Start difference. First operand 1486 states and 5884 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:30,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:30,606 INFO L93 Difference]: Finished difference Result 3120 states and 11593 transitions. [2022-01-28 14:36:30,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:30,606 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:30,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:30,613 INFO L225 Difference]: With dead ends: 3120 [2022-01-28 14:36:30,613 INFO L226 Difference]: Without dead ends: 2909 [2022-01-28 14:36:30,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:30,614 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 107 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:30,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 133 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:30,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2909 states. [2022-01-28 14:36:30,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2909 to 1450. [2022-01-28 14:36:30,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1450 states, 1449 states have (on average 3.9820565907522427) internal successors, (5770), 1449 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:30,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 5770 transitions. [2022-01-28 14:36:30,647 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 5770 transitions. Word has length 25 [2022-01-28 14:36:30,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:30,647 INFO L470 AbstractCegarLoop]: Abstraction has 1450 states and 5770 transitions. [2022-01-28 14:36:30,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:30,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 5770 transitions. [2022-01-28 14:36:30,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:30,650 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:30,650 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:30,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2022-01-28 14:36:30,650 INFO L402 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:30,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:30,650 INFO L85 PathProgramCache]: Analyzing trace with hash 2019005431, now seen corresponding path program 223 times [2022-01-28 14:36:30,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:30,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497236430] [2022-01-28 14:36:30,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:30,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:30,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:30,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:30,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:30,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497236430] [2022-01-28 14:36:30,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497236430] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:30,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:30,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:30,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188857460] [2022-01-28 14:36:30,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:30,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:30,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:30,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:30,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:30,736 INFO L87 Difference]: Start difference. First operand 1450 states and 5770 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:30,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:30,846 INFO L93 Difference]: Finished difference Result 3250 states and 12076 transitions. [2022-01-28 14:36:30,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:30,847 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:30,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:30,854 INFO L225 Difference]: With dead ends: 3250 [2022-01-28 14:36:30,854 INFO L226 Difference]: Without dead ends: 3061 [2022-01-28 14:36:30,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:30,855 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 96 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:30,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 155 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:30,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3061 states. [2022-01-28 14:36:30,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3061 to 1519. [2022-01-28 14:36:30,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1519 states, 1518 states have (on average 3.963109354413702) internal successors, (6016), 1518 states have internal predecessors, (6016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:30,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 6016 transitions. [2022-01-28 14:36:30,889 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 6016 transitions. Word has length 25 [2022-01-28 14:36:30,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:30,890 INFO L470 AbstractCegarLoop]: Abstraction has 1519 states and 6016 transitions. [2022-01-28 14:36:30,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:30,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 6016 transitions. [2022-01-28 14:36:30,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:30,892 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:30,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:30,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2022-01-28 14:36:30,892 INFO L402 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:30,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:30,893 INFO L85 PathProgramCache]: Analyzing trace with hash -24331563, now seen corresponding path program 224 times [2022-01-28 14:36:30,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:30,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21767568] [2022-01-28 14:36:30,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:30,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:30,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:31,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:31,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:31,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21767568] [2022-01-28 14:36:31,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21767568] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:31,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:31,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:31,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687128468] [2022-01-28 14:36:31,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:31,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:31,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:31,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:31,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:31,041 INFO L87 Difference]: Start difference. First operand 1519 states and 6016 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:31,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:31,176 INFO L93 Difference]: Finished difference Result 3248 states and 12041 transitions. [2022-01-28 14:36:31,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:31,176 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:31,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:31,184 INFO L225 Difference]: With dead ends: 3248 [2022-01-28 14:36:31,184 INFO L226 Difference]: Without dead ends: 3031 [2022-01-28 14:36:31,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:31,184 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 124 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:31,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 141 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:31,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3031 states. [2022-01-28 14:36:31,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3031 to 1489. [2022-01-28 14:36:31,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1489 states, 1488 states have (on average 3.9704301075268815) internal successors, (5908), 1488 states have internal predecessors, (5908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:31,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 5908 transitions. [2022-01-28 14:36:31,220 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 5908 transitions. Word has length 25 [2022-01-28 14:36:31,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:31,220 INFO L470 AbstractCegarLoop]: Abstraction has 1489 states and 5908 transitions. [2022-01-28 14:36:31,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:31,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 5908 transitions. [2022-01-28 14:36:31,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:31,223 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:31,224 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:31,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2022-01-28 14:36:31,224 INFO L402 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:31,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:31,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1157163913, now seen corresponding path program 225 times [2022-01-28 14:36:31,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:31,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957170496] [2022-01-28 14:36:31,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:31,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:31,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:31,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:31,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:31,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957170496] [2022-01-28 14:36:31,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957170496] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:31,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:31,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:31,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322089616] [2022-01-28 14:36:31,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:31,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:31,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:31,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:31,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:31,314 INFO L87 Difference]: Start difference. First operand 1489 states and 5908 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:31,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:31,407 INFO L93 Difference]: Finished difference Result 3318 states and 12295 transitions. [2022-01-28 14:36:31,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:31,407 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:31,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:31,416 INFO L225 Difference]: With dead ends: 3318 [2022-01-28 14:36:31,416 INFO L226 Difference]: Without dead ends: 3129 [2022-01-28 14:36:31,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:31,416 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 115 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:31,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 140 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:31,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3129 states. [2022-01-28 14:36:31,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3129 to 1552. [2022-01-28 14:36:31,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1552 states, 1551 states have (on average 3.9426176660219214) internal successors, (6115), 1551 states have internal predecessors, (6115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:31,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1552 states to 1552 states and 6115 transitions. [2022-01-28 14:36:31,455 INFO L78 Accepts]: Start accepts. Automaton has 1552 states and 6115 transitions. Word has length 25 [2022-01-28 14:36:31,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:31,456 INFO L470 AbstractCegarLoop]: Abstraction has 1552 states and 6115 transitions. [2022-01-28 14:36:31,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:31,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1552 states and 6115 transitions. [2022-01-28 14:36:31,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:31,459 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:31,459 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:31,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2022-01-28 14:36:31,459 INFO L402 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:31,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:31,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1712952201, now seen corresponding path program 226 times [2022-01-28 14:36:31,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:31,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519864003] [2022-01-28 14:36:31,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:31,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:31,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:31,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:31,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:31,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519864003] [2022-01-28 14:36:31,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519864003] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:31,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:31,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:31,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994711474] [2022-01-28 14:36:31,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:31,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:31,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:31,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:31,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:31,543 INFO L87 Difference]: Start difference. First operand 1552 states and 6115 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:31,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:31,664 INFO L93 Difference]: Finished difference Result 3351 states and 12378 transitions. [2022-01-28 14:36:31,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:31,664 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:31,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:31,674 INFO L225 Difference]: With dead ends: 3351 [2022-01-28 14:36:31,674 INFO L226 Difference]: Without dead ends: 3066 [2022-01-28 14:36:31,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:31,674 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 109 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:31,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 146 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:31,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3066 states. [2022-01-28 14:36:31,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3066 to 1489. [2022-01-28 14:36:31,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1489 states, 1488 states have (on average 3.9495967741935485) internal successors, (5877), 1488 states have internal predecessors, (5877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:31,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 5877 transitions. [2022-01-28 14:36:31,721 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 5877 transitions. Word has length 25 [2022-01-28 14:36:31,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:31,721 INFO L470 AbstractCegarLoop]: Abstraction has 1489 states and 5877 transitions. [2022-01-28 14:36:31,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:31,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 5877 transitions. [2022-01-28 14:36:31,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:31,725 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:31,725 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:31,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2022-01-28 14:36:31,725 INFO L402 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:31,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:31,726 INFO L85 PathProgramCache]: Analyzing trace with hash -174816299, now seen corresponding path program 227 times [2022-01-28 14:36:31,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:31,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906669017] [2022-01-28 14:36:31,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:31,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:31,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:31,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:31,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:31,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906669017] [2022-01-28 14:36:31,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906669017] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:31,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:31,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:31,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131398847] [2022-01-28 14:36:31,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:31,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:31,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:31,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:31,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:31,908 INFO L87 Difference]: Start difference. First operand 1489 states and 5877 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:32,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:32,024 INFO L93 Difference]: Finished difference Result 3297 states and 12203 transitions. [2022-01-28 14:36:32,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:32,024 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:32,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:32,031 INFO L225 Difference]: With dead ends: 3297 [2022-01-28 14:36:32,032 INFO L226 Difference]: Without dead ends: 3110 [2022-01-28 14:36:32,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:32,032 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 117 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:32,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 134 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:32,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3110 states. [2022-01-28 14:36:32,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3110 to 1535. [2022-01-28 14:36:32,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1535 states, 1534 states have (on average 3.9335071707953064) internal successors, (6034), 1534 states have internal predecessors, (6034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:32,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 6034 transitions. [2022-01-28 14:36:32,063 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 6034 transitions. Word has length 25 [2022-01-28 14:36:32,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:32,063 INFO L470 AbstractCegarLoop]: Abstraction has 1535 states and 6034 transitions. [2022-01-28 14:36:32,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:32,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 6034 transitions. [2022-01-28 14:36:32,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:32,065 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:32,065 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:32,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2022-01-28 14:36:32,065 INFO L402 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:32,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:32,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1762761399, now seen corresponding path program 228 times [2022-01-28 14:36:32,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:32,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744475248] [2022-01-28 14:36:32,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:32,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:32,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:32,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:32,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:32,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744475248] [2022-01-28 14:36:32,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744475248] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:32,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:32,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:32,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897516653] [2022-01-28 14:36:32,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:32,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:32,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:32,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:32,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:32,181 INFO L87 Difference]: Start difference. First operand 1535 states and 6034 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:32,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:32,274 INFO L93 Difference]: Finished difference Result 3332 states and 12292 transitions. [2022-01-28 14:36:32,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:32,274 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:32,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:32,282 INFO L225 Difference]: With dead ends: 3332 [2022-01-28 14:36:32,282 INFO L226 Difference]: Without dead ends: 3025 [2022-01-28 14:36:32,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:32,282 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 113 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:32,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 139 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:32,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3025 states. [2022-01-28 14:36:32,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3025 to 1450. [2022-01-28 14:36:32,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1450 states, 1449 states have (on average 3.9696342305037957) internal successors, (5752), 1449 states have internal predecessors, (5752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:32,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 5752 transitions. [2022-01-28 14:36:32,313 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 5752 transitions. Word has length 25 [2022-01-28 14:36:32,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:32,313 INFO L470 AbstractCegarLoop]: Abstraction has 1450 states and 5752 transitions. [2022-01-28 14:36:32,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:32,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 5752 transitions. [2022-01-28 14:36:32,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:32,316 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:32,316 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:32,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2022-01-28 14:36:32,316 INFO L402 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:32,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:32,316 INFO L85 PathProgramCache]: Analyzing trace with hash -116976427, now seen corresponding path program 229 times [2022-01-28 14:36:32,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:32,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795702766] [2022-01-28 14:36:32,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:32,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:32,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:32,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:32,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:32,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795702766] [2022-01-28 14:36:32,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795702766] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:32,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:32,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:32,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233041227] [2022-01-28 14:36:32,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:32,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:32,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:32,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:32,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:32,409 INFO L87 Difference]: Start difference. First operand 1450 states and 5752 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:32,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:32,504 INFO L93 Difference]: Finished difference Result 3197 states and 11876 transitions. [2022-01-28 14:36:32,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:32,504 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:32,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:32,511 INFO L225 Difference]: With dead ends: 3197 [2022-01-28 14:36:32,511 INFO L226 Difference]: Without dead ends: 3008 [2022-01-28 14:36:32,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:32,511 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 113 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:32,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 140 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:32,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2022-01-28 14:36:32,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 1502. [2022-01-28 14:36:32,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1502 states, 1501 states have (on average 3.9626915389740174) internal successors, (5948), 1501 states have internal predecessors, (5948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:32,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 5948 transitions. [2022-01-28 14:36:32,544 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 5948 transitions. Word has length 25 [2022-01-28 14:36:32,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:32,544 INFO L470 AbstractCegarLoop]: Abstraction has 1502 states and 5948 transitions. [2022-01-28 14:36:32,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:32,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 5948 transitions. [2022-01-28 14:36:32,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:32,547 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:32,547 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:32,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2022-01-28 14:36:32,547 INFO L402 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:32,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:32,547 INFO L85 PathProgramCache]: Analyzing trace with hash 438811861, now seen corresponding path program 230 times [2022-01-28 14:36:32,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:32,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132851469] [2022-01-28 14:36:32,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:32,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:32,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:32,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:32,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:32,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132851469] [2022-01-28 14:36:32,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132851469] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:32,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:32,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:32,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636443957] [2022-01-28 14:36:32,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:32,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:32,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:32,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:32,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:32,659 INFO L87 Difference]: Start difference. First operand 1502 states and 5948 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:32,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:32,783 INFO L93 Difference]: Finished difference Result 3183 states and 11807 transitions. [2022-01-28 14:36:32,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:32,784 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:32,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:32,790 INFO L225 Difference]: With dead ends: 3183 [2022-01-28 14:36:32,790 INFO L226 Difference]: Without dead ends: 2984 [2022-01-28 14:36:32,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:32,791 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 102 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:32,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 162 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:32,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2984 states. [2022-01-28 14:36:32,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2984 to 1478. [2022-01-28 14:36:32,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1477 states have (on average 3.967501692620176) internal successors, (5860), 1477 states have internal predecessors, (5860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:32,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 5860 transitions. [2022-01-28 14:36:32,836 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 5860 transitions. Word has length 25 [2022-01-28 14:36:32,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:32,837 INFO L470 AbstractCegarLoop]: Abstraction has 1478 states and 5860 transitions. [2022-01-28 14:36:32,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:32,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 5860 transitions. [2022-01-28 14:36:32,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:32,840 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:32,840 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:32,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2022-01-28 14:36:32,840 INFO L402 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:32,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:32,840 INFO L85 PathProgramCache]: Analyzing trace with hash -734499785, now seen corresponding path program 231 times [2022-01-28 14:36:32,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:32,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897950945] [2022-01-28 14:36:32,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:32,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:32,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:32,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:32,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897950945] [2022-01-28 14:36:32,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897950945] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:32,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:32,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:32,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119976283] [2022-01-28 14:36:32,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:32,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:32,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:32,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:32,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:32,965 INFO L87 Difference]: Start difference. First operand 1478 states and 5860 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:33,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:33,065 INFO L93 Difference]: Finished difference Result 3220 states and 11923 transitions. [2022-01-28 14:36:33,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:33,065 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:33,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:33,072 INFO L225 Difference]: With dead ends: 3220 [2022-01-28 14:36:33,072 INFO L226 Difference]: Without dead ends: 3031 [2022-01-28 14:36:33,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:33,073 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 107 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:33,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 168 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:33,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3031 states. [2022-01-28 14:36:33,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3031 to 1541. [2022-01-28 14:36:33,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1541 states, 1540 states have (on average 3.93961038961039) internal successors, (6067), 1540 states have internal predecessors, (6067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:33,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 6067 transitions. [2022-01-28 14:36:33,104 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 6067 transitions. Word has length 25 [2022-01-28 14:36:33,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:33,104 INFO L470 AbstractCegarLoop]: Abstraction has 1541 states and 6067 transitions. [2022-01-28 14:36:33,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:33,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 6067 transitions. [2022-01-28 14:36:33,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:33,107 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:33,107 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:33,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2022-01-28 14:36:33,107 INFO L402 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:33,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:33,108 INFO L85 PathProgramCache]: Analyzing trace with hash 549002453, now seen corresponding path program 232 times [2022-01-28 14:36:33,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:33,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456558859] [2022-01-28 14:36:33,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:33,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:33,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:33,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:33,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456558859] [2022-01-28 14:36:33,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456558859] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:33,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:33,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:33,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746967040] [2022-01-28 14:36:33,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:33,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:33,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:33,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:33,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:33,237 INFO L87 Difference]: Start difference. First operand 1541 states and 6067 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:33,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:33,347 INFO L93 Difference]: Finished difference Result 3253 states and 12006 transitions. [2022-01-28 14:36:33,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:33,348 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:33,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:33,355 INFO L225 Difference]: With dead ends: 3253 [2022-01-28 14:36:33,355 INFO L226 Difference]: Without dead ends: 2968 [2022-01-28 14:36:33,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:33,355 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 116 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:33,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 139 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:33,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2022-01-28 14:36:33,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 1478. [2022-01-28 14:36:33,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1477 states have (on average 3.948544346648612) internal successors, (5832), 1477 states have internal predecessors, (5832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:33,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 5832 transitions. [2022-01-28 14:36:33,385 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 5832 transitions. Word has length 25 [2022-01-28 14:36:33,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:33,385 INFO L470 AbstractCegarLoop]: Abstraction has 1478 states and 5832 transitions. [2022-01-28 14:36:33,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:33,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 5832 transitions. [2022-01-28 14:36:33,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:33,387 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:33,387 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:33,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2022-01-28 14:36:33,387 INFO L402 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:33,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:33,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1097788203, now seen corresponding path program 233 times [2022-01-28 14:36:33,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:33,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089328852] [2022-01-28 14:36:33,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:33,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:33,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:33,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:33,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:33,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089328852] [2022-01-28 14:36:33,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089328852] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:33,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:33,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:33,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67477105] [2022-01-28 14:36:33,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:33,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:33,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:33,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:33,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:33,493 INFO L87 Difference]: Start difference. First operand 1478 states and 5832 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:33,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:33,592 INFO L93 Difference]: Finished difference Result 3169 states and 11731 transitions. [2022-01-28 14:36:33,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:33,592 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:33,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:33,599 INFO L225 Difference]: With dead ends: 3169 [2022-01-28 14:36:33,599 INFO L226 Difference]: Without dead ends: 2994 [2022-01-28 14:36:33,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:33,600 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 106 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:33,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 157 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:33,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2022-01-28 14:36:33,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 1518. [2022-01-28 14:36:33,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1518 states, 1517 states have (on average 3.936717205009888) internal successors, (5972), 1517 states have internal predecessors, (5972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:33,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 5972 transitions. [2022-01-28 14:36:33,630 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 5972 transitions. Word has length 25 [2022-01-28 14:36:33,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:33,630 INFO L470 AbstractCegarLoop]: Abstraction has 1518 states and 5972 transitions. [2022-01-28 14:36:33,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:33,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 5972 transitions. [2022-01-28 14:36:33,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:33,632 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:33,632 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:33,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2022-01-28 14:36:33,632 INFO L402 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:33,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:33,633 INFO L85 PathProgramCache]: Analyzing trace with hash -879436617, now seen corresponding path program 234 times [2022-01-28 14:36:33,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:33,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129530730] [2022-01-28 14:36:33,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:33,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:33,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:33,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:33,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:33,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129530730] [2022-01-28 14:36:33,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129530730] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:33,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:33,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:33,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599142929] [2022-01-28 14:36:33,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:33,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:33,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:33,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:33,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:33,714 INFO L87 Difference]: Start difference. First operand 1518 states and 5972 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:33,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:33,808 INFO L93 Difference]: Finished difference Result 3121 states and 11531 transitions. [2022-01-28 14:36:33,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:33,808 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:33,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:33,813 INFO L225 Difference]: With dead ends: 3121 [2022-01-28 14:36:33,814 INFO L226 Difference]: Without dead ends: 2831 [2022-01-28 14:36:33,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:33,814 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 103 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:33,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 170 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:33,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2831 states. [2022-01-28 14:36:33,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2831 to 1450. [2022-01-28 14:36:33,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1450 states, 1449 states have (on average 3.9599723947550034) internal successors, (5738), 1449 states have internal predecessors, (5738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:33,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 5738 transitions. [2022-01-28 14:36:33,840 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 5738 transitions. Word has length 25 [2022-01-28 14:36:33,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:33,840 INFO L470 AbstractCegarLoop]: Abstraction has 1450 states and 5738 transitions. [2022-01-28 14:36:33,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:33,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 5738 transitions. [2022-01-28 14:36:33,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:33,842 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:33,842 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:33,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2022-01-28 14:36:33,842 INFO L402 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:33,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:33,842 INFO L85 PathProgramCache]: Analyzing trace with hash 855420083, now seen corresponding path program 235 times [2022-01-28 14:36:33,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:33,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504101709] [2022-01-28 14:36:33,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:33,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:33,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:33,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:33,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:33,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504101709] [2022-01-28 14:36:33,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504101709] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:33,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:33,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:33,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209596086] [2022-01-28 14:36:33,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:33,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:33,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:33,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:33,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:33,919 INFO L87 Difference]: Start difference. First operand 1450 states and 5738 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:33,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:34,000 INFO L93 Difference]: Finished difference Result 3166 states and 11768 transitions. [2022-01-28 14:36:34,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:34,000 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:34,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:34,007 INFO L225 Difference]: With dead ends: 3166 [2022-01-28 14:36:34,007 INFO L226 Difference]: Without dead ends: 2979 [2022-01-28 14:36:34,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:34,007 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 110 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:34,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 144 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:34,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2022-01-28 14:36:34,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 1494. [2022-01-28 14:36:34,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1493 states have (on average 3.955793703951775) internal successors, (5906), 1493 states have internal predecessors, (5906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:34,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 5906 transitions. [2022-01-28 14:36:34,038 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 5906 transitions. Word has length 25 [2022-01-28 14:36:34,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:34,038 INFO L470 AbstractCegarLoop]: Abstraction has 1494 states and 5906 transitions. [2022-01-28 14:36:34,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:34,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 5906 transitions. [2022-01-28 14:36:34,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:34,040 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:34,040 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:34,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2022-01-28 14:36:34,040 INFO L402 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:34,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:34,041 INFO L85 PathProgramCache]: Analyzing trace with hash 648612117, now seen corresponding path program 236 times [2022-01-28 14:36:34,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:34,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442150066] [2022-01-28 14:36:34,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:34,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:34,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:34,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:34,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:34,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442150066] [2022-01-28 14:36:34,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442150066] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:34,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:34,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:34,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414285405] [2022-01-28 14:36:34,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:34,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:34,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:34,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:34,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:34,122 INFO L87 Difference]: Start difference. First operand 1494 states and 5906 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:34,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:34,205 INFO L93 Difference]: Finished difference Result 3154 states and 11704 transitions. [2022-01-28 14:36:34,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:34,206 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:34,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:34,213 INFO L225 Difference]: With dead ends: 3154 [2022-01-28 14:36:34,213 INFO L226 Difference]: Without dead ends: 2955 [2022-01-28 14:36:34,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:34,213 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 105 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:34,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 153 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:34,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2955 states. [2022-01-28 14:36:34,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2955 to 1470. [2022-01-28 14:36:34,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1469 states have (on average 3.960517358747447) internal successors, (5818), 1469 states have internal predecessors, (5818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:34,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 5818 transitions. [2022-01-28 14:36:34,244 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 5818 transitions. Word has length 25 [2022-01-28 14:36:34,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:34,244 INFO L470 AbstractCegarLoop]: Abstraction has 1470 states and 5818 transitions. [2022-01-28 14:36:34,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:34,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 5818 transitions. [2022-01-28 14:36:34,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:34,246 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:34,246 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:34,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2022-01-28 14:36:34,246 INFO L402 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:34,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:34,247 INFO L85 PathProgramCache]: Analyzing trace with hash 237896725, now seen corresponding path program 237 times [2022-01-28 14:36:34,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:34,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862885134] [2022-01-28 14:36:34,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:34,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:34,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:34,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:34,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862885134] [2022-01-28 14:36:34,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862885134] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:34,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:34,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:34,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796585041] [2022-01-28 14:36:34,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:34,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:34,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:34,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:34,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:34,324 INFO L87 Difference]: Start difference. First operand 1470 states and 5818 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:34,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:34,411 INFO L93 Difference]: Finished difference Result 3189 states and 11815 transitions. [2022-01-28 14:36:34,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:34,411 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:34,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:34,418 INFO L225 Difference]: With dead ends: 3189 [2022-01-28 14:36:34,418 INFO L226 Difference]: Without dead ends: 3002 [2022-01-28 14:36:34,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:34,418 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 115 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:34,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 152 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:34,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3002 states. [2022-01-28 14:36:34,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3002 to 1516. [2022-01-28 14:36:34,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1516 states, 1515 states have (on average 3.943894389438944) internal successors, (5975), 1515 states have internal predecessors, (5975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:34,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 5975 transitions. [2022-01-28 14:36:34,447 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 5975 transitions. Word has length 25 [2022-01-28 14:36:34,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:34,448 INFO L470 AbstractCegarLoop]: Abstraction has 1516 states and 5975 transitions. [2022-01-28 14:36:34,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:34,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 5975 transitions. [2022-01-28 14:36:34,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:34,450 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:34,450 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:34,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2022-01-28 14:36:34,450 INFO L402 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:34,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:34,450 INFO L85 PathProgramCache]: Analyzing trace with hash -280202347, now seen corresponding path program 238 times [2022-01-28 14:36:34,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:34,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353886762] [2022-01-28 14:36:34,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:34,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:34,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:34,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:34,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:34,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353886762] [2022-01-28 14:36:34,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353886762] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:34,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:34,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:34,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060446404] [2022-01-28 14:36:34,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:34,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:34,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:34,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:34,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:34,537 INFO L87 Difference]: Start difference. First operand 1516 states and 5975 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:34,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:34,625 INFO L93 Difference]: Finished difference Result 3224 states and 11904 transitions. [2022-01-28 14:36:34,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:34,625 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:34,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:34,632 INFO L225 Difference]: With dead ends: 3224 [2022-01-28 14:36:34,633 INFO L226 Difference]: Without dead ends: 2956 [2022-01-28 14:36:34,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:34,633 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 94 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:34,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 174 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:34,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2022-01-28 14:36:34,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1470. [2022-01-28 14:36:34,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1469 states have (on average 3.9469026548672566) internal successors, (5798), 1469 states have internal predecessors, (5798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:34,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 5798 transitions. [2022-01-28 14:36:34,667 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 5798 transitions. Word has length 25 [2022-01-28 14:36:34,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:34,667 INFO L470 AbstractCegarLoop]: Abstraction has 1470 states and 5798 transitions. [2022-01-28 14:36:34,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:34,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 5798 transitions. [2022-01-28 14:36:34,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:34,670 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:34,670 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:34,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2022-01-28 14:36:34,670 INFO L402 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:34,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:34,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1355026569, now seen corresponding path program 239 times [2022-01-28 14:36:34,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:34,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615151154] [2022-01-28 14:36:34,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:34,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:34,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:34,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:34,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:34,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615151154] [2022-01-28 14:36:34,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615151154] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:34,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:34,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:34,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747467405] [2022-01-28 14:36:34,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:34,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:34,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:34,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:34,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:34,756 INFO L87 Difference]: Start difference. First operand 1470 states and 5798 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:34,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:34,836 INFO L93 Difference]: Finished difference Result 3159 states and 11692 transitions. [2022-01-28 14:36:34,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:34,836 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:34,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:34,843 INFO L225 Difference]: With dead ends: 3159 [2022-01-28 14:36:34,843 INFO L226 Difference]: Without dead ends: 2984 [2022-01-28 14:36:34,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:34,843 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 112 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:34,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 135 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:36:34,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2984 states. [2022-01-28 14:36:34,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2984 to 1510. [2022-01-28 14:36:34,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1510 states, 1509 states have (on average 3.9350563286944995) internal successors, (5938), 1509 states have internal predecessors, (5938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:34,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1510 states to 1510 states and 5938 transitions. [2022-01-28 14:36:34,874 INFO L78 Accepts]: Start accepts. Automaton has 1510 states and 5938 transitions. Word has length 25 [2022-01-28 14:36:34,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:34,874 INFO L470 AbstractCegarLoop]: Abstraction has 1510 states and 5938 transitions. [2022-01-28 14:36:34,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:34,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1510 states and 5938 transitions. [2022-01-28 14:36:34,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:34,876 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:34,876 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:34,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2022-01-28 14:36:34,877 INFO L402 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:34,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:34,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1118905301, now seen corresponding path program 240 times [2022-01-28 14:36:34,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:34,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151197911] [2022-01-28 14:36:34,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:34,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:34,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:34,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:34,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:34,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151197911] [2022-01-28 14:36:34,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151197911] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:34,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:34,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:34,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936310244] [2022-01-28 14:36:34,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:34,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:34,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:34,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:34,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:34,969 INFO L87 Difference]: Start difference. First operand 1510 states and 5938 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:35,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:35,075 INFO L93 Difference]: Finished difference Result 3111 states and 11492 transitions. [2022-01-28 14:36:35,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:35,076 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:35,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:35,082 INFO L225 Difference]: With dead ends: 3111 [2022-01-28 14:36:35,083 INFO L226 Difference]: Without dead ends: 2803 [2022-01-28 14:36:35,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:35,083 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 94 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:35,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 171 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:35,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2803 states. [2022-01-28 14:36:35,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2803 to 1424. [2022-01-28 14:36:35,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1424 states, 1423 states have (on average 3.9880534082923402) internal successors, (5675), 1423 states have internal predecessors, (5675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:35,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 5675 transitions. [2022-01-28 14:36:35,113 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 5675 transitions. Word has length 25 [2022-01-28 14:36:35,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:35,113 INFO L470 AbstractCegarLoop]: Abstraction has 1424 states and 5675 transitions. [2022-01-28 14:36:35,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:35,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 5675 transitions. [2022-01-28 14:36:35,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:35,116 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:35,116 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:35,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2022-01-28 14:36:35,116 INFO L402 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:35,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:35,116 INFO L85 PathProgramCache]: Analyzing trace with hash 209646935, now seen corresponding path program 241 times [2022-01-28 14:36:35,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:35,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411486478] [2022-01-28 14:36:35,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:35,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:35,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:35,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:35,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411486478] [2022-01-28 14:36:35,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411486478] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:35,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:35,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:35,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733942114] [2022-01-28 14:36:35,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:35,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:35,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:35,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:35,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:35,216 INFO L87 Difference]: Start difference. First operand 1424 states and 5675 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:35,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:35,314 INFO L93 Difference]: Finished difference Result 3076 states and 11383 transitions. [2022-01-28 14:36:35,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:35,315 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:35,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:35,321 INFO L225 Difference]: With dead ends: 3076 [2022-01-28 14:36:35,321 INFO L226 Difference]: Without dead ends: 2917 [2022-01-28 14:36:35,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:35,321 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 127 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:35,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 144 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:35,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2022-01-28 14:36:35,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 1480. [2022-01-28 14:36:35,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1480 states, 1479 states have (on average 3.980392156862745) internal successors, (5887), 1479 states have internal predecessors, (5887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:35,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1480 states to 1480 states and 5887 transitions. [2022-01-28 14:36:35,351 INFO L78 Accepts]: Start accepts. Automaton has 1480 states and 5887 transitions. Word has length 25 [2022-01-28 14:36:35,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:35,351 INFO L470 AbstractCegarLoop]: Abstraction has 1480 states and 5887 transitions. [2022-01-28 14:36:35,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:35,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1480 states and 5887 transitions. [2022-01-28 14:36:35,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:35,353 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:35,354 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:35,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2022-01-28 14:36:35,354 INFO L402 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:35,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:35,354 INFO L85 PathProgramCache]: Analyzing trace with hash -798651049, now seen corresponding path program 242 times [2022-01-28 14:36:35,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:35,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000302074] [2022-01-28 14:36:35,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:35,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:35,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:35,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:35,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:35,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000302074] [2022-01-28 14:36:35,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000302074] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:35,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:35,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:35,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554586068] [2022-01-28 14:36:35,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:35,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:35,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:35,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:35,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:35,461 INFO L87 Difference]: Start difference. First operand 1480 states and 5887 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:35,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:35,558 INFO L93 Difference]: Finished difference Result 3139 states and 11590 transitions. [2022-01-28 14:36:35,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:35,558 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:35,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:35,565 INFO L225 Difference]: With dead ends: 3139 [2022-01-28 14:36:35,565 INFO L226 Difference]: Without dead ends: 2885 [2022-01-28 14:36:35,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:35,565 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 106 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:35,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 152 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:35,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2885 states. [2022-01-28 14:36:35,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2885 to 1448. [2022-01-28 14:36:35,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1447 states have (on average 3.979958534899793) internal successors, (5759), 1447 states have internal predecessors, (5759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:35,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5759 transitions. [2022-01-28 14:36:35,593 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5759 transitions. Word has length 25 [2022-01-28 14:36:35,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:35,594 INFO L470 AbstractCegarLoop]: Abstraction has 1448 states and 5759 transitions. [2022-01-28 14:36:35,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:35,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5759 transitions. [2022-01-28 14:36:35,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:35,596 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:35,596 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:35,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2022-01-28 14:36:35,596 INFO L402 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:35,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:35,596 INFO L85 PathProgramCache]: Analyzing trace with hash 248261619, now seen corresponding path program 243 times [2022-01-28 14:36:35,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:35,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810802199] [2022-01-28 14:36:35,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:35,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:35,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:35,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:35,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:35,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810802199] [2022-01-28 14:36:35,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810802199] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:35,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:35,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:35,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782294971] [2022-01-28 14:36:35,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:35,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:35,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:35,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:35,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:35,701 INFO L87 Difference]: Start difference. First operand 1448 states and 5759 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:35,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:35,815 INFO L93 Difference]: Finished difference Result 3027 states and 11189 transitions. [2022-01-28 14:36:35,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:35,815 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:35,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:35,823 INFO L225 Difference]: With dead ends: 3027 [2022-01-28 14:36:35,823 INFO L226 Difference]: Without dead ends: 2868 [2022-01-28 14:36:35,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:35,823 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 106 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:35,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 154 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:35,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2868 states. [2022-01-28 14:36:35,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2868 to 1464. [2022-01-28 14:36:35,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1463 states have (on average 3.969241285030759) internal successors, (5807), 1463 states have internal predecessors, (5807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:35,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 5807 transitions. [2022-01-28 14:36:35,859 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 5807 transitions. Word has length 25 [2022-01-28 14:36:35,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:35,859 INFO L470 AbstractCegarLoop]: Abstraction has 1464 states and 5807 transitions. [2022-01-28 14:36:35,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:35,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 5807 transitions. [2022-01-28 14:36:35,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:35,862 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:35,862 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:35,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2022-01-28 14:36:35,862 INFO L402 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:35,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:35,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1341673131, now seen corresponding path program 244 times [2022-01-28 14:36:35,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:35,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719689325] [2022-01-28 14:36:35,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:35,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:35,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:35,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:35,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719689325] [2022-01-28 14:36:35,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719689325] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:35,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:35,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:35,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098073246] [2022-01-28 14:36:35,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:35,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:35,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:35,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:35,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:35,991 INFO L87 Difference]: Start difference. First operand 1464 states and 5807 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:36,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:36,109 INFO L93 Difference]: Finished difference Result 3057 states and 11282 transitions. [2022-01-28 14:36:36,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:36,109 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:36,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:36,116 INFO L225 Difference]: With dead ends: 3057 [2022-01-28 14:36:36,116 INFO L226 Difference]: Without dead ends: 2852 [2022-01-28 14:36:36,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:36,117 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 101 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:36,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 156 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:36,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2022-01-28 14:36:36,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 1448. [2022-01-28 14:36:36,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1447 states have (on average 3.9744298548721493) internal successors, (5751), 1447 states have internal predecessors, (5751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:36,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5751 transitions. [2022-01-28 14:36:36,148 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5751 transitions. Word has length 25 [2022-01-28 14:36:36,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:36,148 INFO L470 AbstractCegarLoop]: Abstraction has 1448 states and 5751 transitions. [2022-01-28 14:36:36,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:36,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5751 transitions. [2022-01-28 14:36:36,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:36,150 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:36,150 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:36,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2022-01-28 14:36:36,151 INFO L402 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:36,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:36,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1979836617, now seen corresponding path program 245 times [2022-01-28 14:36:36,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:36,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011027200] [2022-01-28 14:36:36,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:36,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:36,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:36,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:36,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:36,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011027200] [2022-01-28 14:36:36,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011027200] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:36,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:36,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:36,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792479571] [2022-01-28 14:36:36,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:36,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:36,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:36,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:36,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:36,290 INFO L87 Difference]: Start difference. First operand 1448 states and 5751 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:36,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:36,417 INFO L93 Difference]: Finished difference Result 3167 states and 11687 transitions. [2022-01-28 14:36:36,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:36,417 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:36,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:36,424 INFO L225 Difference]: With dead ends: 3167 [2022-01-28 14:36:36,424 INFO L226 Difference]: Without dead ends: 2978 [2022-01-28 14:36:36,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:36,424 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 102 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:36,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 169 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:36,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2978 states. [2022-01-28 14:36:36,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 1511. [2022-01-28 14:36:36,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1511 states, 1510 states have (on average 3.9456953642384107) internal successors, (5958), 1510 states have internal predecessors, (5958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:36,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 5958 transitions. [2022-01-28 14:36:36,454 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 5958 transitions. Word has length 25 [2022-01-28 14:36:36,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:36,455 INFO L470 AbstractCegarLoop]: Abstraction has 1511 states and 5958 transitions. [2022-01-28 14:36:36,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:36,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 5958 transitions. [2022-01-28 14:36:36,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:36,458 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:36,458 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:36,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2022-01-28 14:36:36,458 INFO L402 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:36,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:36,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1681783659, now seen corresponding path program 246 times [2022-01-28 14:36:36,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:36,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308449982] [2022-01-28 14:36:36,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:36,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:36,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:36,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:36,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:36,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308449982] [2022-01-28 14:36:36,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308449982] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:36,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:36,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:36,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53798273] [2022-01-28 14:36:36,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:36,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:36,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:36,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:36,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:36,548 INFO L87 Difference]: Start difference. First operand 1511 states and 5958 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:36,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:36,646 INFO L93 Difference]: Finished difference Result 3200 states and 11770 transitions. [2022-01-28 14:36:36,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:36,646 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:36,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:36,653 INFO L225 Difference]: With dead ends: 3200 [2022-01-28 14:36:36,653 INFO L226 Difference]: Without dead ends: 2891 [2022-01-28 14:36:36,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:36,653 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 107 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:36,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 175 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:36,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2891 states. [2022-01-28 14:36:36,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2891 to 1424. [2022-01-28 14:36:36,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1424 states, 1423 states have (on average 3.9796205200281096) internal successors, (5663), 1423 states have internal predecessors, (5663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:36,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 5663 transitions. [2022-01-28 14:36:36,682 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 5663 transitions. Word has length 25 [2022-01-28 14:36:36,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:36,682 INFO L470 AbstractCegarLoop]: Abstraction has 1424 states and 5663 transitions. [2022-01-28 14:36:36,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:36,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 5663 transitions. [2022-01-28 14:36:36,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:36,685 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:36,685 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:36,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2022-01-28 14:36:36,685 INFO L402 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:36,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:36,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1764370955, now seen corresponding path program 247 times [2022-01-28 14:36:36,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:36,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835172562] [2022-01-28 14:36:36,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:36,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:36,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:36,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:36,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:36,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835172562] [2022-01-28 14:36:36,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835172562] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:36,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:36,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:36,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953045138] [2022-01-28 14:36:36,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:36,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:36,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:36,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:36,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:36,793 INFO L87 Difference]: Start difference. First operand 1424 states and 5663 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:36,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:36,884 INFO L93 Difference]: Finished difference Result 3043 states and 11268 transitions. [2022-01-28 14:36:36,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:36,885 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:36,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:36,891 INFO L225 Difference]: With dead ends: 3043 [2022-01-28 14:36:36,892 INFO L226 Difference]: Without dead ends: 2884 [2022-01-28 14:36:36,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:36,892 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 122 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:36,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 139 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:36,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2022-01-28 14:36:36,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 1472. [2022-01-28 14:36:36,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1471 states have (on average 3.9748470428280083) internal successors, (5847), 1471 states have internal predecessors, (5847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:36,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 5847 transitions. [2022-01-28 14:36:36,922 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 5847 transitions. Word has length 25 [2022-01-28 14:36:36,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:36,923 INFO L470 AbstractCegarLoop]: Abstraction has 1472 states and 5847 transitions. [2022-01-28 14:36:36,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:36,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 5847 transitions. [2022-01-28 14:36:36,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:36,925 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:36,925 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:36,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2022-01-28 14:36:36,926 INFO L402 AbstractCegarLoop]: === Iteration 253 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:36,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:36,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1522298357, now seen corresponding path program 248 times [2022-01-28 14:36:36,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:36,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11850556] [2022-01-28 14:36:36,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:36,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:36,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:37,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:37,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:37,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11850556] [2022-01-28 14:36:37,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11850556] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:37,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:37,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:37,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037286427] [2022-01-28 14:36:37,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:37,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:37,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:37,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:37,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:37,036 INFO L87 Difference]: Start difference. First operand 1472 states and 5847 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:37,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:37,134 INFO L93 Difference]: Finished difference Result 3106 states and 11475 transitions. [2022-01-28 14:36:37,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:37,134 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:37,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:37,141 INFO L225 Difference]: With dead ends: 3106 [2022-01-28 14:36:37,141 INFO L226 Difference]: Without dead ends: 2852 [2022-01-28 14:36:37,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:37,142 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 110 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:37,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 156 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:37,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2022-01-28 14:36:37,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 1440. [2022-01-28 14:36:37,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1439 states have (on average 3.974287699791522) internal successors, (5719), 1439 states have internal predecessors, (5719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:37,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 5719 transitions. [2022-01-28 14:36:37,172 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 5719 transitions. Word has length 25 [2022-01-28 14:36:37,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:37,172 INFO L470 AbstractCegarLoop]: Abstraction has 1440 states and 5719 transitions. [2022-01-28 14:36:37,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:37,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 5719 transitions. [2022-01-28 14:36:37,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:37,174 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:37,174 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:37,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2022-01-28 14:36:37,175 INFO L402 AbstractCegarLoop]: === Iteration 254 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:37,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:37,176 INFO L85 PathProgramCache]: Analyzing trace with hash 269418903, now seen corresponding path program 249 times [2022-01-28 14:36:37,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:37,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003575832] [2022-01-28 14:36:37,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:37,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:37,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:37,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:37,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:37,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003575832] [2022-01-28 14:36:37,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003575832] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:37,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:37,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:37,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329851564] [2022-01-28 14:36:37,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:37,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:37,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:37,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:37,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:37,304 INFO L87 Difference]: Start difference. First operand 1440 states and 5719 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:37,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:37,412 INFO L93 Difference]: Finished difference Result 2988 states and 11057 transitions. [2022-01-28 14:36:37,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:37,412 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:37,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:37,419 INFO L225 Difference]: With dead ends: 2988 [2022-01-28 14:36:37,419 INFO L226 Difference]: Without dead ends: 2829 [2022-01-28 14:36:37,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:37,420 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 113 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:37,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 148 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:37,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2829 states. [2022-01-28 14:36:37,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2829 to 1456. [2022-01-28 14:36:37,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1455 states have (on average 3.963573883161512) internal successors, (5767), 1455 states have internal predecessors, (5767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:37,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 5767 transitions. [2022-01-28 14:36:37,453 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 5767 transitions. Word has length 25 [2022-01-28 14:36:37,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:37,453 INFO L470 AbstractCegarLoop]: Abstraction has 1456 states and 5767 transitions. [2022-01-28 14:36:37,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:37,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 5767 transitions. [2022-01-28 14:36:37,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:37,455 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:37,455 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:37,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2022-01-28 14:36:37,456 INFO L402 AbstractCegarLoop]: === Iteration 255 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:37,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:37,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1949915543, now seen corresponding path program 250 times [2022-01-28 14:36:37,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:37,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060950170] [2022-01-28 14:36:37,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:37,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:37,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:37,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:37,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:37,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060950170] [2022-01-28 14:36:37,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060950170] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:37,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:37,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:37,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603911275] [2022-01-28 14:36:37,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:37,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:37,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:37,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:37,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:37,584 INFO L87 Difference]: Start difference. First operand 1456 states and 5767 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:37,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:37,707 INFO L93 Difference]: Finished difference Result 3012 states and 11133 transitions. [2022-01-28 14:36:37,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:37,707 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:37,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:37,715 INFO L225 Difference]: With dead ends: 3012 [2022-01-28 14:36:37,715 INFO L226 Difference]: Without dead ends: 2813 [2022-01-28 14:36:37,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:37,715 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 99 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:37,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 153 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:37,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2813 states. [2022-01-28 14:36:37,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2813 to 1440. [2022-01-28 14:36:37,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1439 states have (on average 3.968728283530229) internal successors, (5711), 1439 states have internal predecessors, (5711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:37,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 5711 transitions. [2022-01-28 14:36:37,748 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 5711 transitions. Word has length 25 [2022-01-28 14:36:37,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:37,749 INFO L470 AbstractCegarLoop]: Abstraction has 1440 states and 5711 transitions. [2022-01-28 14:36:37,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:37,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 5711 transitions. [2022-01-28 14:36:37,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:37,751 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:37,751 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:37,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2022-01-28 14:36:37,751 INFO L402 AbstractCegarLoop]: === Iteration 256 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:37,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:37,752 INFO L85 PathProgramCache]: Analyzing trace with hash -656805481, now seen corresponding path program 251 times [2022-01-28 14:36:37,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:37,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780599157] [2022-01-28 14:36:37,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:37,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:37,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:37,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:37,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:37,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780599157] [2022-01-28 14:36:37,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780599157] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:37,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:37,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:37,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622160564] [2022-01-28 14:36:37,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:37,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:37,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:37,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:37,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:37,881 INFO L87 Difference]: Start difference. First operand 1440 states and 5711 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:38,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:38,007 INFO L93 Difference]: Finished difference Result 3103 states and 11480 transitions. [2022-01-28 14:36:38,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:38,008 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:38,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:38,015 INFO L225 Difference]: With dead ends: 3103 [2022-01-28 14:36:38,015 INFO L226 Difference]: Without dead ends: 2920 [2022-01-28 14:36:38,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:38,015 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 123 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:38,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 147 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:38,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2022-01-28 14:36:38,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 1484. [2022-01-28 14:36:38,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1484 states, 1483 states have (on average 3.9534726904922453) internal successors, (5863), 1483 states have internal predecessors, (5863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:38,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1484 states to 1484 states and 5863 transitions. [2022-01-28 14:36:38,048 INFO L78 Accepts]: Start accepts. Automaton has 1484 states and 5863 transitions. Word has length 25 [2022-01-28 14:36:38,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:38,048 INFO L470 AbstractCegarLoop]: Abstraction has 1484 states and 5863 transitions. [2022-01-28 14:36:38,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:38,048 INFO L276 IsEmpty]: Start isEmpty. Operand 1484 states and 5863 transitions. [2022-01-28 14:36:38,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:38,051 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:38,051 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:38,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2022-01-28 14:36:38,051 INFO L402 AbstractCegarLoop]: === Iteration 257 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:38,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:38,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1661137419, now seen corresponding path program 252 times [2022-01-28 14:36:38,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:38,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126365271] [2022-01-28 14:36:38,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:38,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:38,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:38,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:38,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:38,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126365271] [2022-01-28 14:36:38,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126365271] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:38,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:38,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:38,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337021372] [2022-01-28 14:36:38,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:38,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:38,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:38,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:38,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:38,193 INFO L87 Difference]: Start difference. First operand 1484 states and 5863 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:38,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:38,303 INFO L93 Difference]: Finished difference Result 3142 states and 11583 transitions. [2022-01-28 14:36:38,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:38,304 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:38,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:38,310 INFO L225 Difference]: With dead ends: 3142 [2022-01-28 14:36:38,310 INFO L226 Difference]: Without dead ends: 2860 [2022-01-28 14:36:38,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:38,311 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 102 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:38,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 151 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:38,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2860 states. [2022-01-28 14:36:38,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2860 to 1424. [2022-01-28 14:36:38,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1424 states, 1423 states have (on average 3.9739985945186227) internal successors, (5655), 1423 states have internal predecessors, (5655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:38,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 5655 transitions. [2022-01-28 14:36:38,338 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 5655 transitions. Word has length 25 [2022-01-28 14:36:38,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:38,338 INFO L470 AbstractCegarLoop]: Abstraction has 1424 states and 5655 transitions. [2022-01-28 14:36:38,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:38,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 5655 transitions. [2022-01-28 14:36:38,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:38,340 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:38,340 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:38,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2022-01-28 14:36:38,341 INFO L402 AbstractCegarLoop]: === Iteration 258 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:38,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:38,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1069767471, now seen corresponding path program 253 times [2022-01-28 14:36:38,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:38,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818849374] [2022-01-28 14:36:38,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:38,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:38,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:38,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:38,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:38,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818849374] [2022-01-28 14:36:38,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818849374] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:38,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:38,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:38,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404301072] [2022-01-28 14:36:38,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:38,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:38,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:38,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:38,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:38,425 INFO L87 Difference]: Start difference. First operand 1424 states and 5655 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:38,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:38,505 INFO L93 Difference]: Finished difference Result 2921 states and 10804 transitions. [2022-01-28 14:36:38,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:38,505 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:38,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:38,512 INFO L225 Difference]: With dead ends: 2921 [2022-01-28 14:36:38,512 INFO L226 Difference]: Without dead ends: 2762 [2022-01-28 14:36:38,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:38,512 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 114 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:38,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 148 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:38,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2762 states. [2022-01-28 14:36:38,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2762 to 1448. [2022-01-28 14:36:38,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1447 states have (on average 3.9661368348306842) internal successors, (5739), 1447 states have internal predecessors, (5739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:38,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5739 transitions. [2022-01-28 14:36:38,543 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5739 transitions. Word has length 25 [2022-01-28 14:36:38,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:38,543 INFO L470 AbstractCegarLoop]: Abstraction has 1448 states and 5739 transitions. [2022-01-28 14:36:38,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:38,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5739 transitions. [2022-01-28 14:36:38,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:38,546 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:38,546 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:38,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2022-01-28 14:36:38,546 INFO L402 AbstractCegarLoop]: === Iteration 259 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:38,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:38,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1635265075, now seen corresponding path program 254 times [2022-01-28 14:36:38,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:38,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624322872] [2022-01-28 14:36:38,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:38,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:38,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:38,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:38,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:38,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624322872] [2022-01-28 14:36:38,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624322872] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:38,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:38,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:38,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708183880] [2022-01-28 14:36:38,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:38,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:38,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:38,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:38,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:38,667 INFO L87 Difference]: Start difference. First operand 1448 states and 5739 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:38,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:38,790 INFO L93 Difference]: Finished difference Result 2951 states and 10897 transitions. [2022-01-28 14:36:38,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:38,790 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:38,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:38,797 INFO L225 Difference]: With dead ends: 2951 [2022-01-28 14:36:38,797 INFO L226 Difference]: Without dead ends: 2746 [2022-01-28 14:36:38,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:38,797 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 95 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:38,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 159 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:38,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2022-01-28 14:36:38,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 1432. [2022-01-28 14:36:38,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1431 states have (on average 3.971348707197764) internal successors, (5683), 1431 states have internal predecessors, (5683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:38,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 5683 transitions. [2022-01-28 14:36:38,826 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 5683 transitions. Word has length 25 [2022-01-28 14:36:38,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:38,826 INFO L470 AbstractCegarLoop]: Abstraction has 1432 states and 5683 transitions. [2022-01-28 14:36:38,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:38,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 5683 transitions. [2022-01-28 14:36:38,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:38,828 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:38,828 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:38,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2022-01-28 14:36:38,828 INFO L402 AbstractCegarLoop]: === Iteration 260 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:38,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:38,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1276575437, now seen corresponding path program 255 times [2022-01-28 14:36:38,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:38,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926698474] [2022-01-28 14:36:38,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:38,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:38,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:38,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:38,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:38,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926698474] [2022-01-28 14:36:38,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926698474] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:38,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:38,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:38,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079754161] [2022-01-28 14:36:38,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:38,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:38,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:38,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:38,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:38,955 INFO L87 Difference]: Start difference. First operand 1432 states and 5683 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:39,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:39,064 INFO L93 Difference]: Finished difference Result 2915 states and 10779 transitions. [2022-01-28 14:36:39,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:39,064 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:39,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:39,071 INFO L225 Difference]: With dead ends: 2915 [2022-01-28 14:36:39,071 INFO L226 Difference]: Without dead ends: 2756 [2022-01-28 14:36:39,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:39,071 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 109 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:39,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 160 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:39,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2022-01-28 14:36:39,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 1448. [2022-01-28 14:36:39,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1447 states have (on average 3.9606081548030407) internal successors, (5731), 1447 states have internal predecessors, (5731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:39,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5731 transitions. [2022-01-28 14:36:39,103 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5731 transitions. Word has length 25 [2022-01-28 14:36:39,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:39,103 INFO L470 AbstractCegarLoop]: Abstraction has 1448 states and 5731 transitions. [2022-01-28 14:36:39,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:39,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5731 transitions. [2022-01-28 14:36:39,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:39,106 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:39,106 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:39,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2022-01-28 14:36:39,106 INFO L402 AbstractCegarLoop]: === Iteration 261 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:39,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:39,106 INFO L85 PathProgramCache]: Analyzing trace with hash 403921203, now seen corresponding path program 256 times [2022-01-28 14:36:39,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:39,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135250788] [2022-01-28 14:36:39,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:39,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:39,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:39,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:39,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135250788] [2022-01-28 14:36:39,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135250788] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:39,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:39,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:39,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878536933] [2022-01-28 14:36:39,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:39,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:39,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:39,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:39,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:39,251 INFO L87 Difference]: Start difference. First operand 1448 states and 5731 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:39,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:39,375 INFO L93 Difference]: Finished difference Result 2939 states and 10855 transitions. [2022-01-28 14:36:39,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:39,375 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:39,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:39,382 INFO L225 Difference]: With dead ends: 2939 [2022-01-28 14:36:39,383 INFO L226 Difference]: Without dead ends: 2740 [2022-01-28 14:36:39,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:39,384 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 95 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:39,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 159 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:39,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2740 states. [2022-01-28 14:36:39,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2740 to 1432. [2022-01-28 14:36:39,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1431 states have (on average 3.96575821104123) internal successors, (5675), 1431 states have internal predecessors, (5675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:39,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 5675 transitions. [2022-01-28 14:36:39,413 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 5675 transitions. Word has length 25 [2022-01-28 14:36:39,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:39,413 INFO L470 AbstractCegarLoop]: Abstraction has 1432 states and 5675 transitions. [2022-01-28 14:36:39,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:39,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 5675 transitions. [2022-01-28 14:36:39,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:39,416 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:39,416 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:39,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2022-01-28 14:36:39,416 INFO L402 AbstractCegarLoop]: === Iteration 262 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:39,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:39,416 INFO L85 PathProgramCache]: Analyzing trace with hash 140586517, now seen corresponding path program 257 times [2022-01-28 14:36:39,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:39,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361637594] [2022-01-28 14:36:39,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:39,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:39,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:39,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:39,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:39,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361637594] [2022-01-28 14:36:39,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361637594] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:39,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:39,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:39,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740199201] [2022-01-28 14:36:39,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:39,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:39,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:39,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:39,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:39,532 INFO L87 Difference]: Start difference. First operand 1432 states and 5675 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:39,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:39,647 INFO L93 Difference]: Finished difference Result 2987 states and 11041 transitions. [2022-01-28 14:36:39,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:39,648 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:39,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:39,676 INFO L225 Difference]: With dead ends: 2987 [2022-01-28 14:36:39,677 INFO L226 Difference]: Without dead ends: 2798 [2022-01-28 14:36:39,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:39,677 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 103 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:39,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 153 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:39,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2022-01-28 14:36:39,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 1460. [2022-01-28 14:36:39,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1459 states have (on average 3.949965729952022) internal successors, (5763), 1459 states have internal predecessors, (5763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:39,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 5763 transitions. [2022-01-28 14:36:39,704 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 5763 transitions. Word has length 25 [2022-01-28 14:36:39,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:39,704 INFO L470 AbstractCegarLoop]: Abstraction has 1460 states and 5763 transitions. [2022-01-28 14:36:39,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:39,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 5763 transitions. [2022-01-28 14:36:39,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:39,707 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:39,707 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:39,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2022-01-28 14:36:39,707 INFO L402 AbstractCegarLoop]: === Iteration 263 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:39,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:39,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1251558029, now seen corresponding path program 258 times [2022-01-28 14:36:39,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:39,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596118278] [2022-01-28 14:36:39,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:39,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:39,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:39,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:39,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:39,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596118278] [2022-01-28 14:36:39,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596118278] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:39,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:39,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:39,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823569649] [2022-01-28 14:36:39,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:39,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:39,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:39,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:39,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:39,807 INFO L87 Difference]: Start difference. First operand 1460 states and 5763 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:39,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:39,923 INFO L93 Difference]: Finished difference Result 2981 states and 10996 transitions. [2022-01-28 14:36:39,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:39,924 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:39,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:39,930 INFO L225 Difference]: With dead ends: 2981 [2022-01-28 14:36:39,930 INFO L226 Difference]: Without dead ends: 2762 [2022-01-28 14:36:39,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:39,930 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 91 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:39,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 170 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:39,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2762 states. [2022-01-28 14:36:39,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2762 to 1424. [2022-01-28 14:36:39,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1424 states, 1423 states have (on average 3.971187631763879) internal successors, (5651), 1423 states have internal predecessors, (5651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:39,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 5651 transitions. [2022-01-28 14:36:39,959 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 5651 transitions. Word has length 25 [2022-01-28 14:36:39,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:39,959 INFO L470 AbstractCegarLoop]: Abstraction has 1424 states and 5651 transitions. [2022-01-28 14:36:39,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:39,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 5651 transitions. [2022-01-28 14:36:39,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:39,961 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:39,961 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:39,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2022-01-28 14:36:39,962 INFO L402 AbstractCegarLoop]: === Iteration 264 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:39,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:39,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1045799799, now seen corresponding path program 259 times [2022-01-28 14:36:39,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:39,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109230071] [2022-01-28 14:36:39,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:39,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:40,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:40,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:40,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109230071] [2022-01-28 14:36:40,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109230071] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:40,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:40,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:40,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215112232] [2022-01-28 14:36:40,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:40,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:40,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:40,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:40,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:40,086 INFO L87 Difference]: Start difference. First operand 1424 states and 5651 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:40,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:40,205 INFO L93 Difference]: Finished difference Result 3147 states and 11659 transitions. [2022-01-28 14:36:40,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:40,206 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:40,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:40,213 INFO L225 Difference]: With dead ends: 3147 [2022-01-28 14:36:40,213 INFO L226 Difference]: Without dead ends: 2958 [2022-01-28 14:36:40,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:40,213 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 108 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:40,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 145 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:40,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2022-01-28 14:36:40,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 1482. [2022-01-28 14:36:40,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1482 states, 1481 states have (on average 3.962187711006077) internal successors, (5868), 1481 states have internal predecessors, (5868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:40,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 5868 transitions. [2022-01-28 14:36:40,244 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 5868 transitions. Word has length 25 [2022-01-28 14:36:40,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:40,244 INFO L470 AbstractCegarLoop]: Abstraction has 1482 states and 5868 transitions. [2022-01-28 14:36:40,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:40,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 5868 transitions. [2022-01-28 14:36:40,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:40,247 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:40,247 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:40,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2022-01-28 14:36:40,247 INFO L402 AbstractCegarLoop]: === Iteration 265 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:40,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:40,247 INFO L85 PathProgramCache]: Analyzing trace with hash -346344747, now seen corresponding path program 260 times [2022-01-28 14:36:40,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:40,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75800818] [2022-01-28 14:36:40,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:40,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:40,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:40,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:40,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:40,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75800818] [2022-01-28 14:36:40,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75800818] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:40,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:40,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:40,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416728165] [2022-01-28 14:36:40,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:40,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:40,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:40,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:40,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:40,368 INFO L87 Difference]: Start difference. First operand 1482 states and 5868 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:40,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:40,478 INFO L93 Difference]: Finished difference Result 3141 states and 11614 transitions. [2022-01-28 14:36:40,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:40,479 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:40,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:40,485 INFO L225 Difference]: With dead ends: 3141 [2022-01-28 14:36:40,485 INFO L226 Difference]: Without dead ends: 2930 [2022-01-28 14:36:40,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:40,486 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 109 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:40,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 144 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:40,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2022-01-28 14:36:40,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 1454. [2022-01-28 14:36:40,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1454 states, 1453 states have (on average 3.9683413626978665) internal successors, (5766), 1453 states have internal predecessors, (5766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:40,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 5766 transitions. [2022-01-28 14:36:40,515 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 5766 transitions. Word has length 25 [2022-01-28 14:36:40,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:40,515 INFO L470 AbstractCegarLoop]: Abstraction has 1454 states and 5766 transitions. [2022-01-28 14:36:40,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:40,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 5766 transitions. [2022-01-28 14:36:40,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:40,517 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:40,517 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:40,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2022-01-28 14:36:40,518 INFO L402 AbstractCegarLoop]: === Iteration 266 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:40,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:40,518 INFO L85 PathProgramCache]: Analyzing trace with hash -2044518315, now seen corresponding path program 261 times [2022-01-28 14:36:40,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:40,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204050188] [2022-01-28 14:36:40,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:40,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:40,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:40,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:40,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:40,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204050188] [2022-01-28 14:36:40,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204050188] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:40,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:40,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:40,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591061820] [2022-01-28 14:36:40,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:40,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:40,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:40,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:40,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:40,617 INFO L87 Difference]: Start difference. First operand 1454 states and 5766 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:40,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:40,700 INFO L93 Difference]: Finished difference Result 3221 states and 11898 transitions. [2022-01-28 14:36:40,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:40,700 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:40,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:40,709 INFO L225 Difference]: With dead ends: 3221 [2022-01-28 14:36:40,709 INFO L226 Difference]: Without dead ends: 3032 [2022-01-28 14:36:40,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:40,709 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 124 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:40,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 137 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:36:40,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3032 states. [2022-01-28 14:36:40,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3032 to 1517. [2022-01-28 14:36:40,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1517 states, 1516 states have (on average 3.9399736147757256) internal successors, (5973), 1516 states have internal predecessors, (5973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:40,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1517 states to 1517 states and 5973 transitions. [2022-01-28 14:36:40,742 INFO L78 Accepts]: Start accepts. Automaton has 1517 states and 5973 transitions. Word has length 25 [2022-01-28 14:36:40,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:40,742 INFO L470 AbstractCegarLoop]: Abstraction has 1517 states and 5973 transitions. [2022-01-28 14:36:40,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:40,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1517 states and 5973 transitions. [2022-01-28 14:36:40,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:40,744 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:40,744 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:40,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2022-01-28 14:36:40,744 INFO L402 AbstractCegarLoop]: === Iteration 267 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:40,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:40,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1312436011, now seen corresponding path program 262 times [2022-01-28 14:36:40,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:40,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190875412] [2022-01-28 14:36:40,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:40,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:40,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:40,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:40,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:40,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190875412] [2022-01-28 14:36:40,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190875412] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:40,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:40,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:40,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126137172] [2022-01-28 14:36:40,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:40,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:40,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:40,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:40,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:40,884 INFO L87 Difference]: Start difference. First operand 1517 states and 5973 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:40,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:40,993 INFO L93 Difference]: Finished difference Result 3254 states and 11981 transitions. [2022-01-28 14:36:40,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:40,993 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:40,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:41,001 INFO L225 Difference]: With dead ends: 3254 [2022-01-28 14:36:41,002 INFO L226 Difference]: Without dead ends: 2969 [2022-01-28 14:36:41,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:41,002 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 112 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:41,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 144 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:41,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2969 states. [2022-01-28 14:36:41,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2969 to 1454. [2022-01-28 14:36:41,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1454 states, 1453 states have (on average 3.94769442532691) internal successors, (5736), 1453 states have internal predecessors, (5736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:41,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 5736 transitions. [2022-01-28 14:36:41,035 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 5736 transitions. Word has length 25 [2022-01-28 14:36:41,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:41,035 INFO L470 AbstractCegarLoop]: Abstraction has 1454 states and 5736 transitions. [2022-01-28 14:36:41,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:41,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 5736 transitions. [2022-01-28 14:36:41,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:41,037 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:41,037 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:41,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2022-01-28 14:36:41,037 INFO L402 AbstractCegarLoop]: === Iteration 268 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:41,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:41,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1680260941, now seen corresponding path program 263 times [2022-01-28 14:36:41,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:41,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156024989] [2022-01-28 14:36:41,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:41,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:41,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:41,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:41,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:41,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156024989] [2022-01-28 14:36:41,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156024989] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:41,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:41,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:41,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370516928] [2022-01-28 14:36:41,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:41,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:41,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:41,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:41,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:41,158 INFO L87 Difference]: Start difference. First operand 1454 states and 5736 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:41,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:41,241 INFO L93 Difference]: Finished difference Result 3190 states and 11776 transitions. [2022-01-28 14:36:41,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:41,242 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:41,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:41,262 INFO L225 Difference]: With dead ends: 3190 [2022-01-28 14:36:41,263 INFO L226 Difference]: Without dead ends: 3007 [2022-01-28 14:36:41,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:41,263 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 108 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:41,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 145 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:41,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3007 states. [2022-01-28 14:36:41,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3007 to 1498. [2022-01-28 14:36:41,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 1497 states have (on average 3.933199732798931) internal successors, (5888), 1497 states have internal predecessors, (5888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:41,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 5888 transitions. [2022-01-28 14:36:41,293 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 5888 transitions. Word has length 25 [2022-01-28 14:36:41,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:41,293 INFO L470 AbstractCegarLoop]: Abstraction has 1498 states and 5888 transitions. [2022-01-28 14:36:41,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:41,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 5888 transitions. [2022-01-28 14:36:41,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:41,296 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:41,296 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:41,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2022-01-28 14:36:41,296 INFO L402 AbstractCegarLoop]: === Iteration 269 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:41,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:41,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1545187349, now seen corresponding path program 264 times [2022-01-28 14:36:41,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:41,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564184729] [2022-01-28 14:36:41,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:41,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:41,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:41,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:41,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:41,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564184729] [2022-01-28 14:36:41,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564184729] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:41,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:41,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:41,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517194412] [2022-01-28 14:36:41,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:41,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:41,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:41,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:41,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:41,377 INFO L87 Difference]: Start difference. First operand 1498 states and 5888 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:41,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:41,458 INFO L93 Difference]: Finished difference Result 3229 states and 11879 transitions. [2022-01-28 14:36:41,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:41,458 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:41,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:41,465 INFO L225 Difference]: With dead ends: 3229 [2022-01-28 14:36:41,465 INFO L226 Difference]: Without dead ends: 2921 [2022-01-28 14:36:41,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:41,466 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 105 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:41,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 155 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:41,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2921 states. [2022-01-28 14:36:41,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2921 to 1412. [2022-01-28 14:36:41,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1411 states have (on average 3.9780297661233166) internal successors, (5613), 1411 states have internal predecessors, (5613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:41,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 5613 transitions. [2022-01-28 14:36:41,497 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 5613 transitions. Word has length 25 [2022-01-28 14:36:41,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:41,497 INFO L470 AbstractCegarLoop]: Abstraction has 1412 states and 5613 transitions. [2022-01-28 14:36:41,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:41,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 5613 transitions. [2022-01-28 14:36:41,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:41,499 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:41,499 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:41,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2022-01-28 14:36:41,499 INFO L402 AbstractCegarLoop]: === Iteration 270 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:41,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:41,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1233542709, now seen corresponding path program 265 times [2022-01-28 14:36:41,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:41,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980225237] [2022-01-28 14:36:41,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:41,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:41,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:41,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:41,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:41,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980225237] [2022-01-28 14:36:41,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980225237] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:41,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:41,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:41,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718294125] [2022-01-28 14:36:41,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:41,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:41,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:41,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:41,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:41,580 INFO L87 Difference]: Start difference. First operand 1412 states and 5613 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:41,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:41,659 INFO L93 Difference]: Finished difference Result 3022 states and 11152 transitions. [2022-01-28 14:36:41,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:41,659 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:41,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:41,666 INFO L225 Difference]: With dead ends: 3022 [2022-01-28 14:36:41,667 INFO L226 Difference]: Without dead ends: 2863 [2022-01-28 14:36:41,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:41,667 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 110 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:41,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 150 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:41,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2863 states. [2022-01-28 14:36:41,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2863 to 1444. [2022-01-28 14:36:41,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 3.9674289674289676) internal successors, (5725), 1443 states have internal predecessors, (5725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:41,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 5725 transitions. [2022-01-28 14:36:41,699 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 5725 transitions. Word has length 25 [2022-01-28 14:36:41,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:41,699 INFO L470 AbstractCegarLoop]: Abstraction has 1444 states and 5725 transitions. [2022-01-28 14:36:41,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:41,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 5725 transitions. [2022-01-28 14:36:41,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:41,702 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:41,702 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:41,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2022-01-28 14:36:41,702 INFO L402 AbstractCegarLoop]: === Iteration 271 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:41,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:41,702 INFO L85 PathProgramCache]: Analyzing trace with hash 225244725, now seen corresponding path program 266 times [2022-01-28 14:36:41,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:41,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699313831] [2022-01-28 14:36:41,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:41,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:41,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:41,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:41,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699313831] [2022-01-28 14:36:41,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699313831] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:41,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:41,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:41,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969913172] [2022-01-28 14:36:41,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:41,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:41,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:41,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:41,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:41,815 INFO L87 Difference]: Start difference. First operand 1444 states and 5725 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:41,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:41,895 INFO L93 Difference]: Finished difference Result 3085 states and 11359 transitions. [2022-01-28 14:36:41,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:41,896 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:41,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:41,903 INFO L225 Difference]: With dead ends: 3085 [2022-01-28 14:36:41,903 INFO L226 Difference]: Without dead ends: 2831 [2022-01-28 14:36:41,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:41,903 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 113 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:41,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 153 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:41,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2831 states. [2022-01-28 14:36:41,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2831 to 1412. [2022-01-28 14:36:41,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1411 states have (on average 3.966690290574061) internal successors, (5597), 1411 states have internal predecessors, (5597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:41,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 5597 transitions. [2022-01-28 14:36:41,938 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 5597 transitions. Word has length 25 [2022-01-28 14:36:41,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:41,938 INFO L470 AbstractCegarLoop]: Abstraction has 1412 states and 5597 transitions. [2022-01-28 14:36:41,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:41,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 5597 transitions. [2022-01-28 14:36:41,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:41,941 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:41,941 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:41,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2022-01-28 14:36:41,941 INFO L402 AbstractCegarLoop]: === Iteration 272 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:41,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:41,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1272157393, now seen corresponding path program 267 times [2022-01-28 14:36:41,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:41,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570354902] [2022-01-28 14:36:41,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:41,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:41,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:42,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:42,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:42,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570354902] [2022-01-28 14:36:42,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570354902] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:42,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:42,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:42,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096144314] [2022-01-28 14:36:42,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:42,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:42,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:42,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:42,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:42,026 INFO L87 Difference]: Start difference. First operand 1412 states and 5597 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:42,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:42,105 INFO L93 Difference]: Finished difference Result 2973 states and 10958 transitions. [2022-01-28 14:36:42,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:42,105 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:42,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:42,112 INFO L225 Difference]: With dead ends: 2973 [2022-01-28 14:36:42,113 INFO L226 Difference]: Without dead ends: 2814 [2022-01-28 14:36:42,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:42,113 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 104 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:42,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 154 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:42,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2814 states. [2022-01-28 14:36:42,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2814 to 1428. [2022-01-28 14:36:42,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1427 states have (on average 3.955851436580238) internal successors, (5645), 1427 states have internal predecessors, (5645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:42,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 5645 transitions. [2022-01-28 14:36:42,156 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 5645 transitions. Word has length 25 [2022-01-28 14:36:42,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:42,156 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 5645 transitions. [2022-01-28 14:36:42,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:42,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 5645 transitions. [2022-01-28 14:36:42,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:42,159 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:42,159 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:42,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2022-01-28 14:36:42,160 INFO L402 AbstractCegarLoop]: === Iteration 273 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:42,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:42,160 INFO L85 PathProgramCache]: Analyzing trace with hash -317777357, now seen corresponding path program 268 times [2022-01-28 14:36:42,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:42,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908856653] [2022-01-28 14:36:42,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:42,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:42,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:42,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:42,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:42,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908856653] [2022-01-28 14:36:42,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908856653] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:42,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:42,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:42,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226056686] [2022-01-28 14:36:42,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:42,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:42,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:42,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:42,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:42,276 INFO L87 Difference]: Start difference. First operand 1428 states and 5645 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:42,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:42,367 INFO L93 Difference]: Finished difference Result 3003 states and 11051 transitions. [2022-01-28 14:36:42,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:42,367 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:42,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:42,374 INFO L225 Difference]: With dead ends: 3003 [2022-01-28 14:36:42,374 INFO L226 Difference]: Without dead ends: 2798 [2022-01-28 14:36:42,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:42,375 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 108 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:42,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 142 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:42,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2022-01-28 14:36:42,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 1412. [2022-01-28 14:36:42,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1411 states have (on average 3.961020552799433) internal successors, (5589), 1411 states have internal predecessors, (5589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:42,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 5589 transitions. [2022-01-28 14:36:42,408 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 5589 transitions. Word has length 25 [2022-01-28 14:36:42,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:42,408 INFO L470 AbstractCegarLoop]: Abstraction has 1412 states and 5589 transitions. [2022-01-28 14:36:42,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:42,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 5589 transitions. [2022-01-28 14:36:42,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:42,410 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:42,410 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:42,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2022-01-28 14:36:42,410 INFO L402 AbstractCegarLoop]: === Iteration 274 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:42,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:42,411 INFO L85 PathProgramCache]: Analyzing trace with hash -955940843, now seen corresponding path program 269 times [2022-01-28 14:36:42,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:42,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260089882] [2022-01-28 14:36:42,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:42,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:42,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:42,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:42,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:42,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260089882] [2022-01-28 14:36:42,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260089882] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:42,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:42,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:42,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094740009] [2022-01-28 14:36:42,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:42,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:42,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:42,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:42,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:42,520 INFO L87 Difference]: Start difference. First operand 1412 states and 5589 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:42,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:42,609 INFO L93 Difference]: Finished difference Result 3113 states and 11456 transitions. [2022-01-28 14:36:42,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:42,609 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:42,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:42,616 INFO L225 Difference]: With dead ends: 3113 [2022-01-28 14:36:42,616 INFO L226 Difference]: Without dead ends: 2924 [2022-01-28 14:36:42,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:42,617 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 106 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:42,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 154 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:42,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2022-01-28 14:36:42,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 1475. [2022-01-28 14:36:42,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1475 states, 1474 states have (on average 3.932157394843962) internal successors, (5796), 1474 states have internal predecessors, (5796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:42,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 5796 transitions. [2022-01-28 14:36:42,660 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 5796 transitions. Word has length 25 [2022-01-28 14:36:42,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:42,660 INFO L470 AbstractCegarLoop]: Abstraction has 1475 states and 5796 transitions. [2022-01-28 14:36:42,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:42,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 5796 transitions. [2022-01-28 14:36:42,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:42,662 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:42,662 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:42,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2022-01-28 14:36:42,662 INFO L402 AbstractCegarLoop]: === Iteration 275 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:42,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:42,663 INFO L85 PathProgramCache]: Analyzing trace with hash -657887885, now seen corresponding path program 270 times [2022-01-28 14:36:42,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:42,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294280440] [2022-01-28 14:36:42,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:42,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:42,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:42,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:42,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:42,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294280440] [2022-01-28 14:36:42,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294280440] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:42,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:42,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:42,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046353250] [2022-01-28 14:36:42,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:42,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:42,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:42,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:42,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:42,743 INFO L87 Difference]: Start difference. First operand 1475 states and 5796 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:42,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:42,829 INFO L93 Difference]: Finished difference Result 3146 states and 11539 transitions. [2022-01-28 14:36:42,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:42,830 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:42,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:42,836 INFO L225 Difference]: With dead ends: 3146 [2022-01-28 14:36:42,836 INFO L226 Difference]: Without dead ends: 2837 [2022-01-28 14:36:42,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:42,837 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 121 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:42,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 141 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:42,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2837 states. [2022-01-28 14:36:42,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2837 to 1388. [2022-01-28 14:36:42,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1387 states have (on average 3.966113914924297) internal successors, (5501), 1387 states have internal predecessors, (5501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:42,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 5501 transitions. [2022-01-28 14:36:42,869 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 5501 transitions. Word has length 25 [2022-01-28 14:36:42,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:42,869 INFO L470 AbstractCegarLoop]: Abstraction has 1388 states and 5501 transitions. [2022-01-28 14:36:42,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:42,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 5501 transitions. [2022-01-28 14:36:42,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:42,871 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:42,871 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:42,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2022-01-28 14:36:42,871 INFO L402 AbstractCegarLoop]: === Iteration 276 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:42,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:42,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1979982219, now seen corresponding path program 271 times [2022-01-28 14:36:42,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:42,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535520752] [2022-01-28 14:36:42,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:42,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:42,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:42,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:42,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:42,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535520752] [2022-01-28 14:36:42,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535520752] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:42,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:42,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:42,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530758217] [2022-01-28 14:36:42,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:42,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:42,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:42,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:42,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:42,954 INFO L87 Difference]: Start difference. First operand 1388 states and 5501 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:43,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:43,034 INFO L93 Difference]: Finished difference Result 2945 states and 10865 transitions. [2022-01-28 14:36:43,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:43,034 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:43,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:43,041 INFO L225 Difference]: With dead ends: 2945 [2022-01-28 14:36:43,041 INFO L226 Difference]: Without dead ends: 2786 [2022-01-28 14:36:43,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:43,042 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 111 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:43,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 154 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:43,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2022-01-28 14:36:43,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 1436. [2022-01-28 14:36:43,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1435 states have (on average 3.961672473867596) internal successors, (5685), 1435 states have internal predecessors, (5685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:43,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 5685 transitions. [2022-01-28 14:36:43,074 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 5685 transitions. Word has length 25 [2022-01-28 14:36:43,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:43,074 INFO L470 AbstractCegarLoop]: Abstraction has 1436 states and 5685 transitions. [2022-01-28 14:36:43,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:43,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 5685 transitions. [2022-01-28 14:36:43,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:43,077 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:43,077 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:43,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2022-01-28 14:36:43,077 INFO L402 AbstractCegarLoop]: === Iteration 277 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:43,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:43,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1306687093, now seen corresponding path program 272 times [2022-01-28 14:36:43,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:43,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094805132] [2022-01-28 14:36:43,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:43,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:43,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:43,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:43,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094805132] [2022-01-28 14:36:43,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094805132] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:43,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:43,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:43,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147937876] [2022-01-28 14:36:43,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:43,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:43,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:43,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:43,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:43,162 INFO L87 Difference]: Start difference. First operand 1436 states and 5685 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:43,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:43,237 INFO L93 Difference]: Finished difference Result 3008 states and 11072 transitions. [2022-01-28 14:36:43,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:43,237 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:43,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:43,244 INFO L225 Difference]: With dead ends: 3008 [2022-01-28 14:36:43,244 INFO L226 Difference]: Without dead ends: 2754 [2022-01-28 14:36:43,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:43,245 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 113 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:43,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 146 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:43,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2754 states. [2022-01-28 14:36:43,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2754 to 1404. [2022-01-28 14:36:43,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1403 states have (on average 3.9607982893799) internal successors, (5557), 1403 states have internal predecessors, (5557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:43,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 5557 transitions. [2022-01-28 14:36:43,276 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 5557 transitions. Word has length 25 [2022-01-28 14:36:43,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:43,277 INFO L470 AbstractCegarLoop]: Abstraction has 1404 states and 5557 transitions. [2022-01-28 14:36:43,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:43,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 5557 transitions. [2022-01-28 14:36:43,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:43,279 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:43,279 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:43,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2022-01-28 14:36:43,279 INFO L402 AbstractCegarLoop]: === Iteration 278 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:43,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:43,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1098563991, now seen corresponding path program 273 times [2022-01-28 14:36:43,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:43,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454509448] [2022-01-28 14:36:43,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:43,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:43,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:43,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:43,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454509448] [2022-01-28 14:36:43,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454509448] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:43,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:43,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:43,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200264845] [2022-01-28 14:36:43,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:43,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:43,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:43,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:43,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:43,366 INFO L87 Difference]: Start difference. First operand 1404 states and 5557 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:43,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:43,441 INFO L93 Difference]: Finished difference Result 2850 states and 10514 transitions. [2022-01-28 14:36:43,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:43,442 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:43,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:43,448 INFO L225 Difference]: With dead ends: 2850 [2022-01-28 14:36:43,448 INFO L226 Difference]: Without dead ends: 2691 [2022-01-28 14:36:43,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:43,449 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 113 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:43,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 148 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:43,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2691 states. [2022-01-28 14:36:43,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2691 to 1420. [2022-01-28 14:36:43,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 1419 states have (on average 3.9499647639182522) internal successors, (5605), 1419 states have internal predecessors, (5605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:43,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 5605 transitions. [2022-01-28 14:36:43,484 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 5605 transitions. Word has length 25 [2022-01-28 14:36:43,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:43,484 INFO L470 AbstractCegarLoop]: Abstraction has 1420 states and 5605 transitions. [2022-01-28 14:36:43,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:43,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 5605 transitions. [2022-01-28 14:36:43,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:43,487 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:43,487 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:43,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2022-01-28 14:36:43,487 INFO L402 AbstractCegarLoop]: === Iteration 279 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:43,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:43,487 INFO L85 PathProgramCache]: Analyzing trace with hash -843708009, now seen corresponding path program 274 times [2022-01-28 14:36:43,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:43,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036000547] [2022-01-28 14:36:43,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:43,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:43,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:43,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:43,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:43,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036000547] [2022-01-28 14:36:43,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036000547] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:43,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:43,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:43,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075262646] [2022-01-28 14:36:43,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:43,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:43,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:43,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:43,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:43,637 INFO L87 Difference]: Start difference. First operand 1420 states and 5605 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:43,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:43,764 INFO L93 Difference]: Finished difference Result 2738 states and 10177 transitions. [2022-01-28 14:36:43,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:43,765 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:43,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:43,771 INFO L225 Difference]: With dead ends: 2738 [2022-01-28 14:36:43,771 INFO L226 Difference]: Without dead ends: 2547 [2022-01-28 14:36:43,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:43,771 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 103 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:43,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 138 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:43,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2547 states. [2022-01-28 14:36:43,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2547 to 1404. [2022-01-28 14:36:43,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1403 states have (on average 3.9550962223806128) internal successors, (5549), 1403 states have internal predecessors, (5549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:43,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 5549 transitions. [2022-01-28 14:36:43,802 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 5549 transitions. Word has length 25 [2022-01-28 14:36:43,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:43,802 INFO L470 AbstractCegarLoop]: Abstraction has 1404 states and 5549 transitions. [2022-01-28 14:36:43,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:43,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 5549 transitions. [2022-01-28 14:36:43,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:43,804 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:43,804 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:43,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2022-01-28 14:36:43,804 INFO L402 AbstractCegarLoop]: === Iteration 280 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:43,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:43,805 INFO L85 PathProgramCache]: Analyzing trace with hash 844538263, now seen corresponding path program 275 times [2022-01-28 14:36:43,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:43,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984034328] [2022-01-28 14:36:43,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:43,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:43,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:43,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:43,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:43,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984034328] [2022-01-28 14:36:43,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984034328] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:43,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:43,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:43,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699818878] [2022-01-28 14:36:43,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:43,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:43,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:43,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:43,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:43,932 INFO L87 Difference]: Start difference. First operand 1404 states and 5549 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:44,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:44,067 INFO L93 Difference]: Finished difference Result 2985 states and 11005 transitions. [2022-01-28 14:36:44,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:44,067 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:44,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:44,074 INFO L225 Difference]: With dead ends: 2985 [2022-01-28 14:36:44,074 INFO L226 Difference]: Without dead ends: 2810 [2022-01-28 14:36:44,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:44,074 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 110 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:44,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 159 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:44,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2810 states. [2022-01-28 14:36:44,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2810 to 1444. [2022-01-28 14:36:44,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 3.9424809424809424) internal successors, (5689), 1443 states have internal predecessors, (5689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:44,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 5689 transitions. [2022-01-28 14:36:44,118 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 5689 transitions. Word has length 25 [2022-01-28 14:36:44,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:44,118 INFO L470 AbstractCegarLoop]: Abstraction has 1444 states and 5689 transitions. [2022-01-28 14:36:44,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:44,118 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 5689 transitions. [2022-01-28 14:36:44,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:44,120 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:44,120 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:44,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2022-01-28 14:36:44,120 INFO L402 AbstractCegarLoop]: === Iteration 281 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:44,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:44,121 INFO L85 PathProgramCache]: Analyzing trace with hash -810986123, now seen corresponding path program 276 times [2022-01-28 14:36:44,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:44,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808474032] [2022-01-28 14:36:44,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:44,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:44,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:44,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:44,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:44,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808474032] [2022-01-28 14:36:44,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808474032] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:44,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:44,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:44,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877595374] [2022-01-28 14:36:44,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:44,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:44,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:44,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:44,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:44,241 INFO L87 Difference]: Start difference. First operand 1444 states and 5689 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:44,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:44,330 INFO L93 Difference]: Finished difference Result 2937 states and 10805 transitions. [2022-01-28 14:36:44,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:44,331 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:44,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:44,337 INFO L225 Difference]: With dead ends: 2937 [2022-01-28 14:36:44,337 INFO L226 Difference]: Without dead ends: 2659 [2022-01-28 14:36:44,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:44,337 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 114 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:44,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 134 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:44,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2659 states. [2022-01-28 14:36:44,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2659 to 1388. [2022-01-28 14:36:44,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1387 states have (on average 3.9603460706560925) internal successors, (5493), 1387 states have internal predecessors, (5493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:44,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 5493 transitions. [2022-01-28 14:36:44,365 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 5493 transitions. Word has length 25 [2022-01-28 14:36:44,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:44,365 INFO L470 AbstractCegarLoop]: Abstraction has 1388 states and 5493 transitions. [2022-01-28 14:36:44,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:44,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 5493 transitions. [2022-01-28 14:36:44,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:44,367 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:44,367 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:44,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280 [2022-01-28 14:36:44,367 INFO L402 AbstractCegarLoop]: === Iteration 282 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:44,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:44,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1047248209, now seen corresponding path program 277 times [2022-01-28 14:36:44,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:44,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536561011] [2022-01-28 14:36:44,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:44,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:44,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:44,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:44,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:44,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536561011] [2022-01-28 14:36:44,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536561011] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:44,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:44,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:44,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680010592] [2022-01-28 14:36:44,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:44,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:44,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:44,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:44,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:44,489 INFO L87 Difference]: Start difference. First operand 1388 states and 5493 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:44,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:44,585 INFO L93 Difference]: Finished difference Result 2839 states and 10465 transitions. [2022-01-28 14:36:44,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:44,585 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:44,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:44,591 INFO L225 Difference]: With dead ends: 2839 [2022-01-28 14:36:44,591 INFO L226 Difference]: Without dead ends: 2680 [2022-01-28 14:36:44,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:44,592 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 107 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:44,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 153 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:44,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2680 states. [2022-01-28 14:36:44,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2680 to 1412. [2022-01-28 14:36:44,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1411 states have (on average 3.952515946137491) internal successors, (5577), 1411 states have internal predecessors, (5577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:44,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 5577 transitions. [2022-01-28 14:36:44,621 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 5577 transitions. Word has length 25 [2022-01-28 14:36:44,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:44,621 INFO L470 AbstractCegarLoop]: Abstraction has 1412 states and 5577 transitions. [2022-01-28 14:36:44,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:44,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 5577 transitions. [2022-01-28 14:36:44,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:44,624 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:44,624 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:44,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281 [2022-01-28 14:36:44,624 INFO L402 AbstractCegarLoop]: === Iteration 283 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:44,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:44,624 INFO L85 PathProgramCache]: Analyzing trace with hash -542686541, now seen corresponding path program 278 times [2022-01-28 14:36:44,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:44,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633745894] [2022-01-28 14:36:44,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:44,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:44,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:44,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:44,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:44,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633745894] [2022-01-28 14:36:44,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633745894] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:44,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:44,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:44,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063361096] [2022-01-28 14:36:44,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:44,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:44,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:44,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:44,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:44,725 INFO L87 Difference]: Start difference. First operand 1412 states and 5577 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:44,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:44,822 INFO L93 Difference]: Finished difference Result 2869 states and 10558 transitions. [2022-01-28 14:36:44,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:44,822 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:44,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:44,828 INFO L225 Difference]: With dead ends: 2869 [2022-01-28 14:36:44,828 INFO L226 Difference]: Without dead ends: 2664 [2022-01-28 14:36:44,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:44,829 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 118 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:44,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 147 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:44,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2022-01-28 14:36:44,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 1396. [2022-01-28 14:36:44,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 1395 states have (on average 3.957706093189964) internal successors, (5521), 1395 states have internal predecessors, (5521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:44,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 5521 transitions. [2022-01-28 14:36:44,857 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 5521 transitions. Word has length 25 [2022-01-28 14:36:44,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:44,857 INFO L470 AbstractCegarLoop]: Abstraction has 1396 states and 5521 transitions. [2022-01-28 14:36:44,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:44,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 5521 transitions. [2022-01-28 14:36:44,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:44,859 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:44,859 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:44,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable282 [2022-01-28 14:36:44,860 INFO L402 AbstractCegarLoop]: === Iteration 284 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:44,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:44,860 INFO L85 PathProgramCache]: Analyzing trace with hash -447430349, now seen corresponding path program 279 times [2022-01-28 14:36:44,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:44,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085886724] [2022-01-28 14:36:44,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:44,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:44,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:44,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:44,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:44,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085886724] [2022-01-28 14:36:44,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085886724] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:44,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:44,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:44,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875932256] [2022-01-28 14:36:44,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:44,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:44,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:44,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:44,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:44,964 INFO L87 Difference]: Start difference. First operand 1396 states and 5521 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:45,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:45,058 INFO L93 Difference]: Finished difference Result 2793 states and 10300 transitions. [2022-01-28 14:36:45,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:45,058 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:45,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:45,064 INFO L225 Difference]: With dead ends: 2793 [2022-01-28 14:36:45,064 INFO L226 Difference]: Without dead ends: 2634 [2022-01-28 14:36:45,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:45,064 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 110 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:45,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 158 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:45,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2634 states. [2022-01-28 14:36:45,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2634 to 1412. [2022-01-28 14:36:45,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1411 states have (on average 3.9468462083628633) internal successors, (5569), 1411 states have internal predecessors, (5569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:45,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 5569 transitions. [2022-01-28 14:36:45,091 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 5569 transitions. Word has length 25 [2022-01-28 14:36:45,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:45,091 INFO L470 AbstractCegarLoop]: Abstraction has 1412 states and 5569 transitions. [2022-01-28 14:36:45,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:45,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 5569 transitions. [2022-01-28 14:36:45,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:45,093 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:45,093 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:45,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283 [2022-01-28 14:36:45,094 INFO L402 AbstractCegarLoop]: === Iteration 285 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:45,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:45,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1905264947, now seen corresponding path program 280 times [2022-01-28 14:36:45,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:45,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478369836] [2022-01-28 14:36:45,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:45,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:45,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:45,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:45,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:45,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478369836] [2022-01-28 14:36:45,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478369836] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:45,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:45,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:45,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931997343] [2022-01-28 14:36:45,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:45,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:45,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:45,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:45,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:45,244 INFO L87 Difference]: Start difference. First operand 1412 states and 5569 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:45,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:45,371 INFO L93 Difference]: Finished difference Result 2681 states and 9963 transitions. [2022-01-28 14:36:45,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:45,372 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:45,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:45,378 INFO L225 Difference]: With dead ends: 2681 [2022-01-28 14:36:45,378 INFO L226 Difference]: Without dead ends: 2490 [2022-01-28 14:36:45,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:45,378 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 103 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:45,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 138 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:45,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2490 states. [2022-01-28 14:36:45,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2490 to 1396. [2022-01-28 14:36:45,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 1395 states have (on average 3.9519713261648746) internal successors, (5513), 1395 states have internal predecessors, (5513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:45,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 5513 transitions. [2022-01-28 14:36:45,408 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 5513 transitions. Word has length 25 [2022-01-28 14:36:45,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:45,408 INFO L470 AbstractCegarLoop]: Abstraction has 1396 states and 5513 transitions. [2022-01-28 14:36:45,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:45,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 5513 transitions. [2022-01-28 14:36:45,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:45,410 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:45,410 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:45,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284 [2022-01-28 14:36:45,411 INFO L402 AbstractCegarLoop]: === Iteration 286 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:45,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:45,411 INFO L85 PathProgramCache]: Analyzing trace with hash 969731605, now seen corresponding path program 281 times [2022-01-28 14:36:45,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:45,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491443578] [2022-01-28 14:36:45,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:45,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:45,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:45,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:45,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:45,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491443578] [2022-01-28 14:36:45,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491443578] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:45,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:45,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:45,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077910660] [2022-01-28 14:36:45,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:45,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:45,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:45,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:45,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:45,542 INFO L87 Difference]: Start difference. First operand 1396 states and 5513 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:45,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:45,625 INFO L93 Difference]: Finished difference Result 2831 states and 10437 transitions. [2022-01-28 14:36:45,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:45,626 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:45,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:45,632 INFO L225 Difference]: With dead ends: 2831 [2022-01-28 14:36:45,632 INFO L226 Difference]: Without dead ends: 2642 [2022-01-28 14:36:45,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:45,632 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 114 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:45,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 137 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:45,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2642 states. [2022-01-28 14:36:45,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2642 to 1420. [2022-01-28 14:36:45,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 1419 states have (on average 3.938689217758985) internal successors, (5589), 1419 states have internal predecessors, (5589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:45,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 5589 transitions. [2022-01-28 14:36:45,660 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 5589 transitions. Word has length 25 [2022-01-28 14:36:45,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:45,660 INFO L470 AbstractCegarLoop]: Abstraction has 1420 states and 5589 transitions. [2022-01-28 14:36:45,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:45,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 5589 transitions. [2022-01-28 14:36:45,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:45,662 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:45,662 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:45,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285 [2022-01-28 14:36:45,662 INFO L402 AbstractCegarLoop]: === Iteration 287 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:45,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:45,663 INFO L85 PathProgramCache]: Analyzing trace with hash 228779507, now seen corresponding path program 282 times [2022-01-28 14:36:45,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:45,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443627534] [2022-01-28 14:36:45,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:45,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:45,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:45,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:45,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443627534] [2022-01-28 14:36:45,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443627534] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:45,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:45,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:45,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182908897] [2022-01-28 14:36:45,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:45,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:45,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:45,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:45,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:45,804 INFO L87 Difference]: Start difference. First operand 1420 states and 5589 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:45,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:45,916 INFO L93 Difference]: Finished difference Result 2689 states and 9983 transitions. [2022-01-28 14:36:45,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:45,916 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:45,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:45,922 INFO L225 Difference]: With dead ends: 2689 [2022-01-28 14:36:45,922 INFO L226 Difference]: Without dead ends: 2482 [2022-01-28 14:36:45,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:45,923 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 104 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:45,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 136 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:45,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2482 states. [2022-01-28 14:36:45,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2482 to 1388. [2022-01-28 14:36:45,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1387 states have (on average 3.95746214852199) internal successors, (5489), 1387 states have internal predecessors, (5489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:45,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 5489 transitions. [2022-01-28 14:36:45,953 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 5489 transitions. Word has length 25 [2022-01-28 14:36:45,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:45,954 INFO L470 AbstractCegarLoop]: Abstraction has 1388 states and 5489 transitions. [2022-01-28 14:36:45,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:45,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 5489 transitions. [2022-01-28 14:36:45,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:45,957 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:45,957 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:45,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286 [2022-01-28 14:36:45,957 INFO L402 AbstractCegarLoop]: === Iteration 288 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:45,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:45,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1874944887, now seen corresponding path program 283 times [2022-01-28 14:36:45,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:45,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114175531] [2022-01-28 14:36:45,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:45,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:46,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:46,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:46,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114175531] [2022-01-28 14:36:46,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114175531] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:46,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:46,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:46,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823761556] [2022-01-28 14:36:46,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:46,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:46,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:46,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:46,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:46,096 INFO L87 Difference]: Start difference. First operand 1388 states and 5489 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:46,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:46,193 INFO L93 Difference]: Finished difference Result 3063 states and 11315 transitions. [2022-01-28 14:36:46,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:46,193 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:46,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:46,200 INFO L225 Difference]: With dead ends: 3063 [2022-01-28 14:36:46,200 INFO L226 Difference]: Without dead ends: 2874 [2022-01-28 14:36:46,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:46,201 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 118 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:46,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 135 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:46,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2874 states. [2022-01-28 14:36:46,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2874 to 1440. [2022-01-28 14:36:46,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1439 states have (on average 3.9506601806810284) internal successors, (5685), 1439 states have internal predecessors, (5685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:46,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 5685 transitions. [2022-01-28 14:36:46,243 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 5685 transitions. Word has length 25 [2022-01-28 14:36:46,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:46,243 INFO L470 AbstractCegarLoop]: Abstraction has 1440 states and 5685 transitions. [2022-01-28 14:36:46,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:46,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 5685 transitions. [2022-01-28 14:36:46,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:46,245 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:46,245 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:46,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable287 [2022-01-28 14:36:46,246 INFO L402 AbstractCegarLoop]: === Iteration 289 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:46,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:46,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1133992789, now seen corresponding path program 284 times [2022-01-28 14:36:46,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:46,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143222085] [2022-01-28 14:36:46,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:46,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:46,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:46,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:46,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:46,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143222085] [2022-01-28 14:36:46,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143222085] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:46,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:46,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:46,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848254219] [2022-01-28 14:36:46,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:46,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:46,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:46,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:46,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:46,364 INFO L87 Difference]: Start difference. First operand 1440 states and 5685 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:46,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:46,483 INFO L93 Difference]: Finished difference Result 3049 states and 11246 transitions. [2022-01-28 14:36:46,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:46,483 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:46,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:46,490 INFO L225 Difference]: With dead ends: 3049 [2022-01-28 14:36:46,490 INFO L226 Difference]: Without dead ends: 2850 [2022-01-28 14:36:46,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:46,490 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 109 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:46,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 149 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:46,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2850 states. [2022-01-28 14:36:46,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2850 to 1416. [2022-01-28 14:36:46,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1415 states have (on average 3.95547703180212) internal successors, (5597), 1415 states have internal predecessors, (5597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:46,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 5597 transitions. [2022-01-28 14:36:46,520 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 5597 transitions. Word has length 25 [2022-01-28 14:36:46,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:46,520 INFO L470 AbstractCegarLoop]: Abstraction has 1416 states and 5597 transitions. [2022-01-28 14:36:46,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:46,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 5597 transitions. [2022-01-28 14:36:46,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:46,522 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:46,522 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:46,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable288 [2022-01-28 14:36:46,522 INFO L402 AbstractCegarLoop]: === Iteration 290 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:46,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:46,522 INFO L85 PathProgramCache]: Analyzing trace with hash 53909461, now seen corresponding path program 285 times [2022-01-28 14:36:46,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:46,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483581394] [2022-01-28 14:36:46,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:46,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:46,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:46,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:46,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:46,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483581394] [2022-01-28 14:36:46,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483581394] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:46,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:46,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:46,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301252346] [2022-01-28 14:36:46,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:46,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:46,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:46,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:46,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:46,654 INFO L87 Difference]: Start difference. First operand 1416 states and 5597 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:46,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:46,803 INFO L93 Difference]: Finished difference Result 3086 states and 11362 transitions. [2022-01-28 14:36:46,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:46,804 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:46,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:46,811 INFO L225 Difference]: With dead ends: 3086 [2022-01-28 14:36:46,811 INFO L226 Difference]: Without dead ends: 2897 [2022-01-28 14:36:46,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:46,811 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 119 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:46,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 142 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:46,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2897 states. [2022-01-28 14:36:46,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2897 to 1479. [2022-01-28 14:36:46,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1479 states, 1478 states have (on average 3.9269282814614344) internal successors, (5804), 1478 states have internal predecessors, (5804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:46,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 5804 transitions. [2022-01-28 14:36:46,841 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 5804 transitions. Word has length 25 [2022-01-28 14:36:46,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:46,841 INFO L470 AbstractCegarLoop]: Abstraction has 1479 states and 5804 transitions. [2022-01-28 14:36:46,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:46,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 5804 transitions. [2022-01-28 14:36:46,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:46,844 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:46,844 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:46,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289 [2022-01-28 14:36:46,844 INFO L402 AbstractCegarLoop]: === Iteration 291 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:46,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:46,844 INFO L85 PathProgramCache]: Analyzing trace with hash 2073862357, now seen corresponding path program 286 times [2022-01-28 14:36:46,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:46,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816116175] [2022-01-28 14:36:46,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:46,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:46,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:46,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:46,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:46,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816116175] [2022-01-28 14:36:46,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816116175] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:46,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:46,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:46,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14201109] [2022-01-28 14:36:46,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:46,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:46,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:46,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:46,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:46,971 INFO L87 Difference]: Start difference. First operand 1479 states and 5804 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:47,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:47,083 INFO L93 Difference]: Finished difference Result 3119 states and 11445 transitions. [2022-01-28 14:36:47,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:47,083 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:47,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:47,089 INFO L225 Difference]: With dead ends: 3119 [2022-01-28 14:36:47,089 INFO L226 Difference]: Without dead ends: 2834 [2022-01-28 14:36:47,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:47,089 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 107 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:47,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 153 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:47,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2834 states. [2022-01-28 14:36:47,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2834 to 1416. [2022-01-28 14:36:47,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1415 states have (on average 3.9356890459363956) internal successors, (5569), 1415 states have internal predecessors, (5569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:47,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 5569 transitions. [2022-01-28 14:36:47,116 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 5569 transitions. Word has length 25 [2022-01-28 14:36:47,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:47,116 INFO L470 AbstractCegarLoop]: Abstraction has 1416 states and 5569 transitions. [2022-01-28 14:36:47,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:47,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 5569 transitions. [2022-01-28 14:36:47,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:47,118 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:47,118 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:47,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290 [2022-01-28 14:36:47,118 INFO L402 AbstractCegarLoop]: === Iteration 292 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:47,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:47,118 INFO L85 PathProgramCache]: Analyzing trace with hash -199923405, now seen corresponding path program 287 times [2022-01-28 14:36:47,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:47,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983037070] [2022-01-28 14:36:47,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:47,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:47,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:47,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:47,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:47,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983037070] [2022-01-28 14:36:47,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983037070] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:47,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:47,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:47,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270580376] [2022-01-28 14:36:47,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:47,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:47,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:47,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:47,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:47,245 INFO L87 Difference]: Start difference. First operand 1416 states and 5569 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:47,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:47,374 INFO L93 Difference]: Finished difference Result 3035 states and 11170 transitions. [2022-01-28 14:36:47,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:47,374 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:47,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:47,380 INFO L225 Difference]: With dead ends: 3035 [2022-01-28 14:36:47,381 INFO L226 Difference]: Without dead ends: 2860 [2022-01-28 14:36:47,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:47,381 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 96 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:47,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 173 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:47,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2860 states. [2022-01-28 14:36:47,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2860 to 1456. [2022-01-28 14:36:47,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1455 states have (on average 3.9237113402061854) internal successors, (5709), 1455 states have internal predecessors, (5709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:47,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 5709 transitions. [2022-01-28 14:36:47,410 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 5709 transitions. Word has length 25 [2022-01-28 14:36:47,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:47,410 INFO L470 AbstractCegarLoop]: Abstraction has 1456 states and 5709 transitions. [2022-01-28 14:36:47,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:47,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 5709 transitions. [2022-01-28 14:36:47,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:47,412 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:47,412 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:47,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291 [2022-01-28 14:36:47,412 INFO L402 AbstractCegarLoop]: === Iteration 293 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:47,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:47,413 INFO L85 PathProgramCache]: Analyzing trace with hash 18428181, now seen corresponding path program 288 times [2022-01-28 14:36:47,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:47,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542793941] [2022-01-28 14:36:47,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:47,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:47,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:47,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:47,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:47,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542793941] [2022-01-28 14:36:47,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542793941] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:47,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:47,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:47,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109430766] [2022-01-28 14:36:47,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:47,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:47,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:47,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:47,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:47,561 INFO L87 Difference]: Start difference. First operand 1456 states and 5709 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:47,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:47,678 INFO L93 Difference]: Finished difference Result 2987 states and 10970 transitions. [2022-01-28 14:36:47,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:47,678 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:47,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:47,685 INFO L225 Difference]: With dead ends: 2987 [2022-01-28 14:36:47,685 INFO L226 Difference]: Without dead ends: 2685 [2022-01-28 14:36:47,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:47,685 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 96 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:47,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 154 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:47,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2685 states. [2022-01-28 14:36:47,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2685 to 1376. [2022-01-28 14:36:47,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1376 states, 1375 states have (on average 3.9643636363636365) internal successors, (5451), 1375 states have internal predecessors, (5451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:47,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 5451 transitions. [2022-01-28 14:36:47,715 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 5451 transitions. Word has length 25 [2022-01-28 14:36:47,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:47,716 INFO L470 AbstractCegarLoop]: Abstraction has 1376 states and 5451 transitions. [2022-01-28 14:36:47,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:47,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 5451 transitions. [2022-01-28 14:36:47,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:47,718 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:47,718 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:47,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292 [2022-01-28 14:36:47,719 INFO L402 AbstractCegarLoop]: === Iteration 294 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:47,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:47,719 INFO L85 PathProgramCache]: Analyzing trace with hash -317194349, now seen corresponding path program 289 times [2022-01-28 14:36:47,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:47,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570249866] [2022-01-28 14:36:47,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:47,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:47,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:47,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:47,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:47,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570249866] [2022-01-28 14:36:47,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570249866] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:47,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:47,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:47,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229001467] [2022-01-28 14:36:47,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:47,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:47,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:47,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:47,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:47,815 INFO L87 Difference]: Start difference. First operand 1376 states and 5451 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:47,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:47,921 INFO L93 Difference]: Finished difference Result 2920 states and 10796 transitions. [2022-01-28 14:36:47,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:47,921 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:47,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:47,927 INFO L225 Difference]: With dead ends: 2920 [2022-01-28 14:36:47,928 INFO L226 Difference]: Without dead ends: 2761 [2022-01-28 14:36:47,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:47,928 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 122 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:47,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 150 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:47,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2761 states. [2022-01-28 14:36:47,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2761 to 1432. [2022-01-28 14:36:47,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1431 states have (on average 3.96575821104123) internal successors, (5675), 1431 states have internal predecessors, (5675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:47,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 5675 transitions. [2022-01-28 14:36:47,956 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 5675 transitions. Word has length 25 [2022-01-28 14:36:47,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:47,956 INFO L470 AbstractCegarLoop]: Abstraction has 1432 states and 5675 transitions. [2022-01-28 14:36:47,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:47,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 5675 transitions. [2022-01-28 14:36:47,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:47,958 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:47,958 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:47,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293 [2022-01-28 14:36:47,958 INFO L402 AbstractCegarLoop]: === Iteration 295 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:47,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:47,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1325492333, now seen corresponding path program 290 times [2022-01-28 14:36:47,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:47,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792335819] [2022-01-28 14:36:47,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:47,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:48,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:48,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:48,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792335819] [2022-01-28 14:36:48,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792335819] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:48,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:48,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:48,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963923181] [2022-01-28 14:36:48,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:48,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:48,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:48,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:48,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:48,054 INFO L87 Difference]: Start difference. First operand 1432 states and 5675 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:48,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:48,139 INFO L93 Difference]: Finished difference Result 2983 states and 11003 transitions. [2022-01-28 14:36:48,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:48,139 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:48,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:48,145 INFO L225 Difference]: With dead ends: 2983 [2022-01-28 14:36:48,145 INFO L226 Difference]: Without dead ends: 2729 [2022-01-28 14:36:48,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:48,145 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 103 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:48,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 153 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:48,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2729 states. [2022-01-28 14:36:48,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2729 to 1400. [2022-01-28 14:36:48,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 1399 states have (on average 3.964974982130093) internal successors, (5547), 1399 states have internal predecessors, (5547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:48,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 5547 transitions. [2022-01-28 14:36:48,173 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 5547 transitions. Word has length 25 [2022-01-28 14:36:48,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:48,174 INFO L470 AbstractCegarLoop]: Abstraction has 1400 states and 5547 transitions. [2022-01-28 14:36:48,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:48,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 5547 transitions. [2022-01-28 14:36:48,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:48,176 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:48,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:48,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294 [2022-01-28 14:36:48,176 INFO L402 AbstractCegarLoop]: === Iteration 296 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:48,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:48,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1716595509, now seen corresponding path program 291 times [2022-01-28 14:36:48,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:48,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830554846] [2022-01-28 14:36:48,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:48,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:48,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:48,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:48,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:48,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830554846] [2022-01-28 14:36:48,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830554846] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:48,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:48,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:48,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531844854] [2022-01-28 14:36:48,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:48,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:48,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:48,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:48,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:48,274 INFO L87 Difference]: Start difference. First operand 1400 states and 5547 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:48,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:48,354 INFO L93 Difference]: Finished difference Result 2865 states and 10585 transitions. [2022-01-28 14:36:48,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:48,354 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:48,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:48,360 INFO L225 Difference]: With dead ends: 2865 [2022-01-28 14:36:48,360 INFO L226 Difference]: Without dead ends: 2706 [2022-01-28 14:36:48,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:48,361 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 112 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:48,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 148 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:48,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2706 states. [2022-01-28 14:36:48,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2706 to 1416. [2022-01-28 14:36:48,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1415 states have (on average 3.954063604240283) internal successors, (5595), 1415 states have internal predecessors, (5595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:48,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 5595 transitions. [2022-01-28 14:36:48,387 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 5595 transitions. Word has length 25 [2022-01-28 14:36:48,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:48,387 INFO L470 AbstractCegarLoop]: Abstraction has 1416 states and 5595 transitions. [2022-01-28 14:36:48,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:48,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 5595 transitions. [2022-01-28 14:36:48,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:48,389 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:48,389 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:48,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295 [2022-01-28 14:36:48,389 INFO L402 AbstractCegarLoop]: === Iteration 297 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:48,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:48,389 INFO L85 PathProgramCache]: Analyzing trace with hash -897875147, now seen corresponding path program 292 times [2022-01-28 14:36:48,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:48,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420156680] [2022-01-28 14:36:48,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:48,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:48,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:48,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:48,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420156680] [2022-01-28 14:36:48,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420156680] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:48,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:48,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:48,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34057380] [2022-01-28 14:36:48,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:48,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:48,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:48,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:48,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:48,474 INFO L87 Difference]: Start difference. First operand 1416 states and 5595 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:48,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:48,571 INFO L93 Difference]: Finished difference Result 2889 states and 10661 transitions. [2022-01-28 14:36:48,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:48,571 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:48,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:48,577 INFO L225 Difference]: With dead ends: 2889 [2022-01-28 14:36:48,577 INFO L226 Difference]: Without dead ends: 2690 [2022-01-28 14:36:48,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:48,577 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 95 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:48,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 185 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:48,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2690 states. [2022-01-28 14:36:48,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2690 to 1400. [2022-01-28 14:36:48,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 1399 states have (on average 3.9592566118656185) internal successors, (5539), 1399 states have internal predecessors, (5539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:48,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 5539 transitions. [2022-01-28 14:36:48,605 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 5539 transitions. Word has length 25 [2022-01-28 14:36:48,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:48,605 INFO L470 AbstractCegarLoop]: Abstraction has 1400 states and 5539 transitions. [2022-01-28 14:36:48,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:48,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 5539 transitions. [2022-01-28 14:36:48,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:48,607 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:48,607 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:48,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296 [2022-01-28 14:36:48,607 INFO L402 AbstractCegarLoop]: === Iteration 298 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:48,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:48,608 INFO L85 PathProgramCache]: Analyzing trace with hash 790371125, now seen corresponding path program 293 times [2022-01-28 14:36:48,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:48,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649937295] [2022-01-28 14:36:48,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:48,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:48,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:48,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:48,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:48,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649937295] [2022-01-28 14:36:48,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649937295] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:48,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:48,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:48,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197198493] [2022-01-28 14:36:48,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:48,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:48,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:48,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:48,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:48,691 INFO L87 Difference]: Start difference. First operand 1400 states and 5539 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:48,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:48,776 INFO L93 Difference]: Finished difference Result 2980 states and 11008 transitions. [2022-01-28 14:36:48,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:48,776 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:48,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:48,783 INFO L225 Difference]: With dead ends: 2980 [2022-01-28 14:36:48,783 INFO L226 Difference]: Without dead ends: 2797 [2022-01-28 14:36:48,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:48,783 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 103 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:48,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 160 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:48,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2797 states. [2022-01-28 14:36:48,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2797 to 1444. [2022-01-28 14:36:48,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 3.943866943866944) internal successors, (5691), 1443 states have internal predecessors, (5691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:48,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 5691 transitions. [2022-01-28 14:36:48,812 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 5691 transitions. Word has length 25 [2022-01-28 14:36:48,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:48,813 INFO L470 AbstractCegarLoop]: Abstraction has 1444 states and 5691 transitions. [2022-01-28 14:36:48,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:48,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 5691 transitions. [2022-01-28 14:36:48,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:48,815 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:48,815 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:48,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297 [2022-01-28 14:36:48,815 INFO L402 AbstractCegarLoop]: === Iteration 299 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:48,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:48,815 INFO L85 PathProgramCache]: Analyzing trace with hash -213960813, now seen corresponding path program 294 times [2022-01-28 14:36:48,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:48,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617798859] [2022-01-28 14:36:48,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:48,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:48,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:48,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:48,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:48,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617798859] [2022-01-28 14:36:48,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617798859] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:48,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:48,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:48,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475125126] [2022-01-28 14:36:48,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:48,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:48,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:48,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:48,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:48,900 INFO L87 Difference]: Start difference. First operand 1444 states and 5691 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:49,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:49,000 INFO L93 Difference]: Finished difference Result 3019 states and 11111 transitions. [2022-01-28 14:36:49,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:49,000 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:49,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:49,007 INFO L225 Difference]: With dead ends: 3019 [2022-01-28 14:36:49,007 INFO L226 Difference]: Without dead ends: 2737 [2022-01-28 14:36:49,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:49,008 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 108 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:49,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 156 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:49,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2737 states. [2022-01-28 14:36:49,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2737 to 1384. [2022-01-28 14:36:49,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1383 states have (on average 3.9645697758496024) internal successors, (5483), 1383 states have internal predecessors, (5483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:49,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 5483 transitions. [2022-01-28 14:36:49,039 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 5483 transitions. Word has length 25 [2022-01-28 14:36:49,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:49,039 INFO L470 AbstractCegarLoop]: Abstraction has 1384 states and 5483 transitions. [2022-01-28 14:36:49,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:49,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 5483 transitions. [2022-01-28 14:36:49,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:49,041 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:49,042 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:49,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable298 [2022-01-28 14:36:49,043 INFO L402 AbstractCegarLoop]: === Iteration 300 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:49,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:49,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1392407413, now seen corresponding path program 295 times [2022-01-28 14:36:49,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:49,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66558376] [2022-01-28 14:36:49,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:49,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:49,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:49,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:49,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:49,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66558376] [2022-01-28 14:36:49,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66558376] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:49,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:49,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:49,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471899259] [2022-01-28 14:36:49,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:49,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:49,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:49,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:49,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:49,141 INFO L87 Difference]: Start difference. First operand 1384 states and 5483 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:49,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:49,251 INFO L93 Difference]: Finished difference Result 2860 states and 10544 transitions. [2022-01-28 14:36:49,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:49,251 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:49,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:49,257 INFO L225 Difference]: With dead ends: 2860 [2022-01-28 14:36:49,257 INFO L226 Difference]: Without dead ends: 2701 [2022-01-28 14:36:49,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:49,257 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 101 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:49,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 160 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:49,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2022-01-28 14:36:49,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 1432. [2022-01-28 14:36:49,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1431 states have (on average 3.960167714884696) internal successors, (5667), 1431 states have internal predecessors, (5667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:49,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 5667 transitions. [2022-01-28 14:36:49,284 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 5667 transitions. Word has length 25 [2022-01-28 14:36:49,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:49,284 INFO L470 AbstractCegarLoop]: Abstraction has 1432 states and 5667 transitions. [2022-01-28 14:36:49,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:49,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 5667 transitions. [2022-01-28 14:36:49,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:49,286 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:49,286 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:49,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299 [2022-01-28 14:36:49,287 INFO L402 AbstractCegarLoop]: === Iteration 301 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:49,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:49,287 INFO L85 PathProgramCache]: Analyzing trace with hash 384109429, now seen corresponding path program 296 times [2022-01-28 14:36:49,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:49,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876252038] [2022-01-28 14:36:49,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:49,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:49,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:49,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:49,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876252038] [2022-01-28 14:36:49,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876252038] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:49,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:49,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:49,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977623634] [2022-01-28 14:36:49,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:49,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:49,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:49,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:49,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:49,368 INFO L87 Difference]: Start difference. First operand 1432 states and 5667 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:49,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:49,447 INFO L93 Difference]: Finished difference Result 2923 states and 10751 transitions. [2022-01-28 14:36:49,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:49,447 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:49,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:49,454 INFO L225 Difference]: With dead ends: 2923 [2022-01-28 14:36:49,454 INFO L226 Difference]: Without dead ends: 2669 [2022-01-28 14:36:49,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:49,454 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 101 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:49,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 165 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:49,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2669 states. [2022-01-28 14:36:49,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2669 to 1400. [2022-01-28 14:36:49,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 1399 states have (on average 3.9592566118656185) internal successors, (5539), 1399 states have internal predecessors, (5539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:49,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 5539 transitions. [2022-01-28 14:36:49,483 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 5539 transitions. Word has length 25 [2022-01-28 14:36:49,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:49,483 INFO L470 AbstractCegarLoop]: Abstraction has 1400 states and 5539 transitions. [2022-01-28 14:36:49,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:49,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 5539 transitions. [2022-01-28 14:36:49,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:49,485 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:49,485 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:49,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable300 [2022-01-28 14:36:49,485 INFO L402 AbstractCegarLoop]: === Iteration 302 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:49,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:49,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1852050763, now seen corresponding path program 297 times [2022-01-28 14:36:49,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:49,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761964805] [2022-01-28 14:36:49,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:49,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:49,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:49,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:49,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:49,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761964805] [2022-01-28 14:36:49,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761964805] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:49,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:49,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:49,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764233698] [2022-01-28 14:36:49,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:49,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:49,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:49,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:49,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:49,604 INFO L87 Difference]: Start difference. First operand 1400 states and 5539 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:49,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:49,696 INFO L93 Difference]: Finished difference Result 2765 states and 10193 transitions. [2022-01-28 14:36:49,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:49,697 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:49,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:49,703 INFO L225 Difference]: With dead ends: 2765 [2022-01-28 14:36:49,703 INFO L226 Difference]: Without dead ends: 2606 [2022-01-28 14:36:49,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:49,703 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 99 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:49,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 172 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:49,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2606 states. [2022-01-28 14:36:49,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2606 to 1416. [2022-01-28 14:36:49,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1415 states have (on average 3.948409893992933) internal successors, (5587), 1415 states have internal predecessors, (5587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:49,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 5587 transitions. [2022-01-28 14:36:49,730 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 5587 transitions. Word has length 25 [2022-01-28 14:36:49,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:49,731 INFO L470 AbstractCegarLoop]: Abstraction has 1416 states and 5587 transitions. [2022-01-28 14:36:49,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:49,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 5587 transitions. [2022-01-28 14:36:49,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:49,733 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:49,733 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:49,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable301 [2022-01-28 14:36:49,733 INFO L402 AbstractCegarLoop]: === Iteration 303 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:49,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:49,733 INFO L85 PathProgramCache]: Analyzing trace with hash 500644533, now seen corresponding path program 298 times [2022-01-28 14:36:49,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:49,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491430835] [2022-01-28 14:36:49,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:49,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:49,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:49,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:49,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491430835] [2022-01-28 14:36:49,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491430835] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:49,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:49,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:49,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649553255] [2022-01-28 14:36:49,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:49,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:49,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:49,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:49,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:49,868 INFO L87 Difference]: Start difference. First operand 1416 states and 5587 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:49,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:49,950 INFO L93 Difference]: Finished difference Result 2653 states and 9856 transitions. [2022-01-28 14:36:49,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:49,951 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:49,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:49,956 INFO L225 Difference]: With dead ends: 2653 [2022-01-28 14:36:49,956 INFO L226 Difference]: Without dead ends: 2462 [2022-01-28 14:36:49,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:49,957 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 86 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:49,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 160 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:49,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2462 states. [2022-01-28 14:36:49,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2462 to 1400. [2022-01-28 14:36:49,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 1399 states have (on average 3.9535382416011435) internal successors, (5531), 1399 states have internal predecessors, (5531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:49,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 5531 transitions. [2022-01-28 14:36:49,983 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 5531 transitions. Word has length 25 [2022-01-28 14:36:49,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:49,983 INFO L470 AbstractCegarLoop]: Abstraction has 1400 states and 5531 transitions. [2022-01-28 14:36:49,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:49,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 5531 transitions. [2022-01-28 14:36:49,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:49,985 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:49,985 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:49,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable302 [2022-01-28 14:36:49,985 INFO L402 AbstractCegarLoop]: === Iteration 304 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:49,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:49,986 INFO L85 PathProgramCache]: Analyzing trace with hash -2106076491, now seen corresponding path program 299 times [2022-01-28 14:36:49,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:49,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204815261] [2022-01-28 14:36:49,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:49,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:49,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:50,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:50,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:50,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204815261] [2022-01-28 14:36:50,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204815261] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:50,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:50,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:50,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962298856] [2022-01-28 14:36:50,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:50,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:50,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:50,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:50,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:50,084 INFO L87 Difference]: Start difference. First operand 1400 states and 5531 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:50,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:50,174 INFO L93 Difference]: Finished difference Result 2900 states and 10684 transitions. [2022-01-28 14:36:50,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:50,174 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:50,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:50,181 INFO L225 Difference]: With dead ends: 2900 [2022-01-28 14:36:50,181 INFO L226 Difference]: Without dead ends: 2725 [2022-01-28 14:36:50,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:50,181 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 99 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:50,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 158 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:50,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2725 states. [2022-01-28 14:36:50,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2725 to 1440. [2022-01-28 14:36:50,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1439 states have (on average 3.9409312022237666) internal successors, (5671), 1439 states have internal predecessors, (5671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:50,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 5671 transitions. [2022-01-28 14:36:50,211 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 5671 transitions. Word has length 25 [2022-01-28 14:36:50,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:50,211 INFO L470 AbstractCegarLoop]: Abstraction has 1440 states and 5671 transitions. [2022-01-28 14:36:50,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:50,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 5671 transitions. [2022-01-28 14:36:50,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:50,213 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:50,213 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:50,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303 [2022-01-28 14:36:50,213 INFO L402 AbstractCegarLoop]: === Iteration 305 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:50,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:50,214 INFO L85 PathProgramCache]: Analyzing trace with hash 533366419, now seen corresponding path program 300 times [2022-01-28 14:36:50,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:50,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883682381] [2022-01-28 14:36:50,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:50,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:50,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:50,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:50,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:50,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883682381] [2022-01-28 14:36:50,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883682381] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:50,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:50,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:50,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757439237] [2022-01-28 14:36:50,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:50,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:50,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:50,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:50,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:50,333 INFO L87 Difference]: Start difference. First operand 1440 states and 5671 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:50,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:50,440 INFO L93 Difference]: Finished difference Result 2852 states and 10484 transitions. [2022-01-28 14:36:50,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:50,440 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:50,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:50,446 INFO L225 Difference]: With dead ends: 2852 [2022-01-28 14:36:50,446 INFO L226 Difference]: Without dead ends: 2574 [2022-01-28 14:36:50,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:50,447 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 108 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:50,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 142 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:50,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2574 states. [2022-01-28 14:36:50,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2574 to 1384. [2022-01-28 14:36:50,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1383 states have (on average 3.9587852494577005) internal successors, (5475), 1383 states have internal predecessors, (5475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:50,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 5475 transitions. [2022-01-28 14:36:50,493 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 5475 transitions. Word has length 25 [2022-01-28 14:36:50,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:50,494 INFO L470 AbstractCegarLoop]: Abstraction has 1384 states and 5475 transitions. [2022-01-28 14:36:50,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:50,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 5475 transitions. [2022-01-28 14:36:50,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:50,496 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:50,496 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:50,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable304 [2022-01-28 14:36:50,496 INFO L402 AbstractCegarLoop]: === Iteration 306 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:50,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:50,496 INFO L85 PathProgramCache]: Analyzing trace with hash 967036375, now seen corresponding path program 301 times [2022-01-28 14:36:50,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:50,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763401686] [2022-01-28 14:36:50,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:50,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:50,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:50,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:50,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:50,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763401686] [2022-01-28 14:36:50,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763401686] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:50,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:50,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:50,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439002309] [2022-01-28 14:36:50,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:50,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:50,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:50,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:50,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:50,619 INFO L87 Difference]: Start difference. First operand 1384 states and 5475 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:50,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:50,705 INFO L93 Difference]: Finished difference Result 2710 states and 9998 transitions. [2022-01-28 14:36:50,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:50,705 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:50,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:50,711 INFO L225 Difference]: With dead ends: 2710 [2022-01-28 14:36:50,711 INFO L226 Difference]: Without dead ends: 2551 [2022-01-28 14:36:50,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:50,711 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 104 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:50,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 153 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:50,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2551 states. [2022-01-28 14:36:50,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2551 to 1408. [2022-01-28 14:36:50,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1408 states, 1407 states have (on average 3.9509594882729213) internal successors, (5559), 1407 states have internal predecessors, (5559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:50,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 5559 transitions. [2022-01-28 14:36:50,736 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 5559 transitions. Word has length 25 [2022-01-28 14:36:50,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:50,736 INFO L470 AbstractCegarLoop]: Abstraction has 1408 states and 5559 transitions. [2022-01-28 14:36:50,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:50,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 5559 transitions. [2022-01-28 14:36:50,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:50,738 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:50,738 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:50,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305 [2022-01-28 14:36:50,739 INFO L402 AbstractCegarLoop]: === Iteration 307 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:50,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:50,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1647434281, now seen corresponding path program 302 times [2022-01-28 14:36:50,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:50,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753375948] [2022-01-28 14:36:50,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:50,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:50,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:50,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:50,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:50,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753375948] [2022-01-28 14:36:50,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753375948] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:50,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:50,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:50,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045472177] [2022-01-28 14:36:50,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:50,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:50,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:50,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:50,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:50,819 INFO L87 Difference]: Start difference. First operand 1408 states and 5559 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:50,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:50,912 INFO L93 Difference]: Finished difference Result 2734 states and 10074 transitions. [2022-01-28 14:36:50,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:50,913 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:50,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:50,918 INFO L225 Difference]: With dead ends: 2734 [2022-01-28 14:36:50,918 INFO L226 Difference]: Without dead ends: 2535 [2022-01-28 14:36:50,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:50,919 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 108 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:50,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 147 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:50,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2535 states. [2022-01-28 14:36:50,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2535 to 1392. [2022-01-28 14:36:50,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1391 states have (on average 3.9561466570812365) internal successors, (5503), 1391 states have internal predecessors, (5503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:50,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 5503 transitions. [2022-01-28 14:36:50,944 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 5503 transitions. Word has length 25 [2022-01-28 14:36:50,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:50,944 INFO L470 AbstractCegarLoop]: Abstraction has 1392 states and 5503 transitions. [2022-01-28 14:36:50,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:50,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 5503 transitions. [2022-01-28 14:36:50,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:50,947 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:50,947 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:50,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306 [2022-01-28 14:36:50,947 INFO L402 AbstractCegarLoop]: === Iteration 308 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:50,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:50,947 INFO L85 PathProgramCache]: Analyzing trace with hash 120239413, now seen corresponding path program 303 times [2022-01-28 14:36:50,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:50,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019602834] [2022-01-28 14:36:50,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:50,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:50,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:51,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:51,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:51,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019602834] [2022-01-28 14:36:51,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019602834] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:51,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:51,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:51,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598200593] [2022-01-28 14:36:51,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:51,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:51,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:51,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:51,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:51,028 INFO L87 Difference]: Start difference. First operand 1392 states and 5503 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:51,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:51,115 INFO L93 Difference]: Finished difference Result 2654 states and 9786 transitions. [2022-01-28 14:36:51,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:51,115 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:51,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:51,121 INFO L225 Difference]: With dead ends: 2654 [2022-01-28 14:36:51,121 INFO L226 Difference]: Without dead ends: 2495 [2022-01-28 14:36:51,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:51,121 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 107 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:51,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 158 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:51,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2022-01-28 14:36:51,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 1408. [2022-01-28 14:36:51,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1408 states, 1407 states have (on average 3.945273631840796) internal successors, (5551), 1407 states have internal predecessors, (5551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:51,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 5551 transitions. [2022-01-28 14:36:51,147 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 5551 transitions. Word has length 25 [2022-01-28 14:36:51,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:51,147 INFO L470 AbstractCegarLoop]: Abstraction has 1408 states and 5551 transitions. [2022-01-28 14:36:51,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:51,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 5551 transitions. [2022-01-28 14:36:51,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:51,149 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:51,149 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:51,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307 [2022-01-28 14:36:51,149 INFO L402 AbstractCegarLoop]: === Iteration 309 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:51,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:51,149 INFO L85 PathProgramCache]: Analyzing trace with hash 762578391, now seen corresponding path program 304 times [2022-01-28 14:36:51,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:51,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88623182] [2022-01-28 14:36:51,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:51,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:51,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:51,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:51,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:51,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88623182] [2022-01-28 14:36:51,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88623182] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:51,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:51,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:51,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224062060] [2022-01-28 14:36:51,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:51,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:51,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:51,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:51,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:51,301 INFO L87 Difference]: Start difference. First operand 1408 states and 5551 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:51,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:51,416 INFO L93 Difference]: Finished difference Result 2542 states and 9449 transitions. [2022-01-28 14:36:51,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:51,416 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:51,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:51,422 INFO L225 Difference]: With dead ends: 2542 [2022-01-28 14:36:51,422 INFO L226 Difference]: Without dead ends: 2351 [2022-01-28 14:36:51,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:51,423 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 105 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:51,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 135 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:51,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2351 states. [2022-01-28 14:36:51,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2351 to 1392. [2022-01-28 14:36:51,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1391 states have (on average 3.9503953989935296) internal successors, (5495), 1391 states have internal predecessors, (5495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:51,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 5495 transitions. [2022-01-28 14:36:51,452 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 5495 transitions. Word has length 25 [2022-01-28 14:36:51,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:51,452 INFO L470 AbstractCegarLoop]: Abstraction has 1392 states and 5495 transitions. [2022-01-28 14:36:51,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:51,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 5495 transitions. [2022-01-28 14:36:51,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:51,454 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:51,455 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:51,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable308 [2022-01-28 14:36:51,455 INFO L402 AbstractCegarLoop]: === Iteration 310 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:51,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:51,455 INFO L85 PathProgramCache]: Analyzing trace with hash 139947479, now seen corresponding path program 305 times [2022-01-28 14:36:51,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:51,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424256519] [2022-01-28 14:36:51,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:51,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:51,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:51,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:51,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:51,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424256519] [2022-01-28 14:36:51,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424256519] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:51,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:51,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:51,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171240005] [2022-01-28 14:36:51,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:51,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:51,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:51,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:51,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:51,542 INFO L87 Difference]: Start difference. First operand 1392 states and 5495 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:51,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:51,626 INFO L93 Difference]: Finished difference Result 2558 states and 9521 transitions. [2022-01-28 14:36:51,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:51,626 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:51,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:51,632 INFO L225 Difference]: With dead ends: 2558 [2022-01-28 14:36:51,632 INFO L226 Difference]: Without dead ends: 2375 [2022-01-28 14:36:51,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:51,633 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 93 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:51,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 155 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:51,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2375 states. [2022-01-28 14:36:51,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2375 to 1416. [2022-01-28 14:36:51,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1415 states have (on average 3.9371024734982334) internal successors, (5571), 1415 states have internal predecessors, (5571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:51,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 5571 transitions. [2022-01-28 14:36:51,657 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 5571 transitions. Word has length 25 [2022-01-28 14:36:51,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:51,657 INFO L470 AbstractCegarLoop]: Abstraction has 1416 states and 5571 transitions. [2022-01-28 14:36:51,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:51,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 5571 transitions. [2022-01-28 14:36:51,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:51,659 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:51,659 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:51,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable309 [2022-01-28 14:36:51,660 INFO L402 AbstractCegarLoop]: === Iteration 311 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:51,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:51,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1903389515, now seen corresponding path program 306 times [2022-01-28 14:36:51,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:51,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31533409] [2022-01-28 14:36:51,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:51,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:51,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:51,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:51,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:51,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31533409] [2022-01-28 14:36:51,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31533409] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:51,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:51,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:51,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339418811] [2022-01-28 14:36:51,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:51,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:51,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:51,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:51,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:51,758 INFO L87 Difference]: Start difference. First operand 1416 states and 5571 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:51,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:51,828 INFO L93 Difference]: Finished difference Result 2374 states and 8908 transitions. [2022-01-28 14:36:51,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:51,829 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:51,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:51,834 INFO L225 Difference]: With dead ends: 2374 [2022-01-28 14:36:51,834 INFO L226 Difference]: Without dead ends: 2167 [2022-01-28 14:36:51,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:51,835 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 87 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:51,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 136 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:36:51,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2167 states. [2022-01-28 14:36:51,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2167 to 1384. [2022-01-28 14:36:51,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1383 states have (on average 3.95589298626175) internal successors, (5471), 1383 states have internal predecessors, (5471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:51,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 5471 transitions. [2022-01-28 14:36:51,860 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 5471 transitions. Word has length 25 [2022-01-28 14:36:51,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:51,860 INFO L470 AbstractCegarLoop]: Abstraction has 1384 states and 5471 transitions. [2022-01-28 14:36:51,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:51,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 5471 transitions. [2022-01-28 14:36:51,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:51,862 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:51,862 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:51,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable310 [2022-01-28 14:36:51,863 INFO L402 AbstractCegarLoop]: === Iteration 312 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:51,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:51,863 INFO L85 PathProgramCache]: Analyzing trace with hash -953023017, now seen corresponding path program 307 times [2022-01-28 14:36:51,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:51,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130431459] [2022-01-28 14:36:51,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:51,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:51,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:51,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:51,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:51,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130431459] [2022-01-28 14:36:51,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130431459] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:51,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:51,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:51,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2381491] [2022-01-28 14:36:51,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:51,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:51,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:51,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:51,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:51,965 INFO L87 Difference]: Start difference. First operand 1384 states and 5471 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:52,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:52,044 INFO L93 Difference]: Finished difference Result 2933 states and 10857 transitions. [2022-01-28 14:36:52,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:52,044 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:52,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:52,051 INFO L225 Difference]: With dead ends: 2933 [2022-01-28 14:36:52,051 INFO L226 Difference]: Without dead ends: 2750 [2022-01-28 14:36:52,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:52,051 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 108 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:52,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 146 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:36:52,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2750 states. [2022-01-28 14:36:52,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2750 to 1428. [2022-01-28 14:36:52,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1427 states have (on average 3.9516468114926417) internal successors, (5639), 1427 states have internal predecessors, (5639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:52,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 5639 transitions. [2022-01-28 14:36:52,082 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 5639 transitions. Word has length 25 [2022-01-28 14:36:52,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:52,082 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 5639 transitions. [2022-01-28 14:36:52,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:52,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 5639 transitions. [2022-01-28 14:36:52,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:52,084 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:52,084 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:52,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable311 [2022-01-28 14:36:52,084 INFO L402 AbstractCegarLoop]: === Iteration 313 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:52,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:52,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1298607285, now seen corresponding path program 308 times [2022-01-28 14:36:52,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:52,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812291082] [2022-01-28 14:36:52,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:52,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:52,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:52,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:52,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812291082] [2022-01-28 14:36:52,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812291082] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:52,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:52,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:52,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139324019] [2022-01-28 14:36:52,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:52,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:52,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:52,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:52,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:52,163 INFO L87 Difference]: Start difference. First operand 1428 states and 5639 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:52,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:52,243 INFO L93 Difference]: Finished difference Result 2925 states and 10805 transitions. [2022-01-28 14:36:52,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:52,243 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:52,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:52,250 INFO L225 Difference]: With dead ends: 2925 [2022-01-28 14:36:52,250 INFO L226 Difference]: Without dead ends: 2726 [2022-01-28 14:36:52,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:52,250 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 119 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:52,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 136 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:36:52,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2726 states. [2022-01-28 14:36:52,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2726 to 1404. [2022-01-28 14:36:52,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1403 states have (on average 3.9565217391304346) internal successors, (5551), 1403 states have internal predecessors, (5551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:52,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 5551 transitions. [2022-01-28 14:36:52,282 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 5551 transitions. Word has length 25 [2022-01-28 14:36:52,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:52,282 INFO L470 AbstractCegarLoop]: Abstraction has 1404 states and 5551 transitions. [2022-01-28 14:36:52,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:52,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 5551 transitions. [2022-01-28 14:36:52,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:52,285 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:52,285 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:52,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable312 [2022-01-28 14:36:52,285 INFO L402 AbstractCegarLoop]: === Iteration 314 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:52,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:52,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1520908853, now seen corresponding path program 309 times [2022-01-28 14:36:52,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:52,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140526184] [2022-01-28 14:36:52,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:52,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:52,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:52,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:52,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:52,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140526184] [2022-01-28 14:36:52,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140526184] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:52,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:52,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:52,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10691452] [2022-01-28 14:36:52,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:52,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:52,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:52,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:52,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:52,368 INFO L87 Difference]: Start difference. First operand 1404 states and 5551 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:52,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:52,453 INFO L93 Difference]: Finished difference Result 2861 states and 10569 transitions. [2022-01-28 14:36:52,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:52,453 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:52,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:52,460 INFO L225 Difference]: With dead ends: 2861 [2022-01-28 14:36:52,460 INFO L226 Difference]: Without dead ends: 2678 [2022-01-28 14:36:52,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:52,461 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 109 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:52,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 148 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:52,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2678 states. [2022-01-28 14:36:52,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2678 to 1448. [2022-01-28 14:36:52,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1447 states have (on average 3.9412577747062887) internal successors, (5703), 1447 states have internal predecessors, (5703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:52,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5703 transitions. [2022-01-28 14:36:52,493 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5703 transitions. Word has length 25 [2022-01-28 14:36:52,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:52,493 INFO L470 AbstractCegarLoop]: Abstraction has 1448 states and 5703 transitions. [2022-01-28 14:36:52,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:52,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5703 transitions. [2022-01-28 14:36:52,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:52,496 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:52,496 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:52,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable313 [2022-01-28 14:36:52,496 INFO L402 AbstractCegarLoop]: === Iteration 315 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:52,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:52,496 INFO L85 PathProgramCache]: Analyzing trace with hash -2056490443, now seen corresponding path program 310 times [2022-01-28 14:36:52,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:52,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631912875] [2022-01-28 14:36:52,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:52,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:52,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:52,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:52,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:52,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631912875] [2022-01-28 14:36:52,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631912875] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:52,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:52,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:52,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843407338] [2022-01-28 14:36:52,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:52,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:52,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:52,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:52,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:52,592 INFO L87 Difference]: Start difference. First operand 1448 states and 5703 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:52,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:52,664 INFO L93 Difference]: Finished difference Result 2900 states and 10672 transitions. [2022-01-28 14:36:52,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:52,664 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:52,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:52,670 INFO L225 Difference]: With dead ends: 2900 [2022-01-28 14:36:52,671 INFO L226 Difference]: Without dead ends: 2634 [2022-01-28 14:36:52,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:52,671 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 108 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:52,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 139 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:52,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2634 states. [2022-01-28 14:36:52,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2634 to 1404. [2022-01-28 14:36:52,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1403 states have (on average 3.9422665716322167) internal successors, (5531), 1403 states have internal predecessors, (5531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:52,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 5531 transitions. [2022-01-28 14:36:52,700 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 5531 transitions. Word has length 25 [2022-01-28 14:36:52,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:52,700 INFO L470 AbstractCegarLoop]: Abstraction has 1404 states and 5531 transitions. [2022-01-28 14:36:52,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:52,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 5531 transitions. [2022-01-28 14:36:52,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:52,702 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:52,702 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:52,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable314 [2022-01-28 14:36:52,703 INFO L402 AbstractCegarLoop]: === Iteration 316 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:52,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:52,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1791710829, now seen corresponding path program 311 times [2022-01-28 14:36:52,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:52,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771263012] [2022-01-28 14:36:52,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:52,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:52,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:52,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:52,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:52,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771263012] [2022-01-28 14:36:52,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771263012] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:52,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:52,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:52,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478869358] [2022-01-28 14:36:52,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:52,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:52,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:52,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:52,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:52,782 INFO L87 Difference]: Start difference. First operand 1404 states and 5531 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:52,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:52,859 INFO L93 Difference]: Finished difference Result 2801 states and 10313 transitions. [2022-01-28 14:36:52,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:52,859 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:52,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:52,865 INFO L225 Difference]: With dead ends: 2801 [2022-01-28 14:36:52,866 INFO L226 Difference]: Without dead ends: 2626 [2022-01-28 14:36:52,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:52,866 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 107 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:52,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 140 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:36:52,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2626 states. [2022-01-28 14:36:52,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2626 to 1444. [2022-01-28 14:36:52,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 3.93000693000693) internal successors, (5671), 1443 states have internal predecessors, (5671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:52,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 5671 transitions. [2022-01-28 14:36:52,895 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 5671 transitions. Word has length 25 [2022-01-28 14:36:52,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:52,895 INFO L470 AbstractCegarLoop]: Abstraction has 1444 states and 5671 transitions. [2022-01-28 14:36:52,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:52,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 5671 transitions. [2022-01-28 14:36:52,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:52,897 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:52,897 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:52,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable315 [2022-01-28 14:36:52,897 INFO L402 AbstractCegarLoop]: === Iteration 317 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:52,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:52,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1573359243, now seen corresponding path program 312 times [2022-01-28 14:36:52,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:52,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677809700] [2022-01-28 14:36:52,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:52,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:52,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:52,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:52,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:52,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677809700] [2022-01-28 14:36:52,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677809700] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:52,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:52,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:52,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595259259] [2022-01-28 14:36:52,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:52,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:52,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:52,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:52,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:52,984 INFO L87 Difference]: Start difference. First operand 1444 states and 5671 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:53,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:53,055 INFO L93 Difference]: Finished difference Result 2753 states and 10113 transitions. [2022-01-28 14:36:53,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:53,055 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:53,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:53,061 INFO L225 Difference]: With dead ends: 2753 [2022-01-28 14:36:53,061 INFO L226 Difference]: Without dead ends: 2463 [2022-01-28 14:36:53,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:53,061 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 109 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:53,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 129 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:36:53,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2463 states. [2022-01-28 14:36:53,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2463 to 1376. [2022-01-28 14:36:53,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1376 states, 1375 states have (on average 3.9614545454545453) internal successors, (5447), 1375 states have internal predecessors, (5447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:53,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 5447 transitions. [2022-01-28 14:36:53,085 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 5447 transitions. Word has length 25 [2022-01-28 14:36:53,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:53,085 INFO L470 AbstractCegarLoop]: Abstraction has 1376 states and 5447 transitions. [2022-01-28 14:36:53,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:53,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 5447 transitions. [2022-01-28 14:36:53,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:53,087 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:53,087 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:53,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable316 [2022-01-28 14:36:53,088 INFO L402 AbstractCegarLoop]: === Iteration 318 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:53,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:53,088 INFO L85 PathProgramCache]: Analyzing trace with hash -895981905, now seen corresponding path program 313 times [2022-01-28 14:36:53,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:53,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987517250] [2022-01-28 14:36:53,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:53,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:53,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:53,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:53,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987517250] [2022-01-28 14:36:53,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987517250] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:53,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:53,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:53,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799697995] [2022-01-28 14:36:53,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:53,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:53,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:53,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:53,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:53,166 INFO L87 Difference]: Start difference. First operand 1376 states and 5447 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:53,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:53,242 INFO L93 Difference]: Finished difference Result 2713 states and 10002 transitions. [2022-01-28 14:36:53,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:53,242 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:53,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:53,248 INFO L225 Difference]: With dead ends: 2713 [2022-01-28 14:36:53,248 INFO L226 Difference]: Without dead ends: 2554 [2022-01-28 14:36:53,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:53,248 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 98 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:53,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 169 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:53,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2554 states. [2022-01-28 14:36:53,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2554 to 1404. [2022-01-28 14:36:53,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1403 states have (on average 3.9565217391304346) internal successors, (5551), 1403 states have internal predecessors, (5551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:53,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 5551 transitions. [2022-01-28 14:36:53,283 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 5551 transitions. Word has length 25 [2022-01-28 14:36:53,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:53,283 INFO L470 AbstractCegarLoop]: Abstraction has 1404 states and 5551 transitions. [2022-01-28 14:36:53,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:53,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 5551 transitions. [2022-01-28 14:36:53,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:53,286 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:53,286 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:53,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable317 [2022-01-28 14:36:53,286 INFO L402 AbstractCegarLoop]: === Iteration 319 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:53,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:53,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1809050641, now seen corresponding path program 314 times [2022-01-28 14:36:53,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:53,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733964509] [2022-01-28 14:36:53,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:53,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:53,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:53,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:53,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:53,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733964509] [2022-01-28 14:36:53,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733964509] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:53,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:53,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:53,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560457964] [2022-01-28 14:36:53,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:53,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:53,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:53,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:53,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:53,394 INFO L87 Difference]: Start difference. First operand 1404 states and 5551 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:53,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:53,476 INFO L93 Difference]: Finished difference Result 2743 states and 10095 transitions. [2022-01-28 14:36:53,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:53,476 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:53,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:53,482 INFO L225 Difference]: With dead ends: 2743 [2022-01-28 14:36:53,482 INFO L226 Difference]: Without dead ends: 2538 [2022-01-28 14:36:53,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:53,483 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 100 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:53,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 157 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:53,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2538 states. [2022-01-28 14:36:53,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2538 to 1388. [2022-01-28 14:36:53,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1387 states have (on average 3.9617880317231435) internal successors, (5495), 1387 states have internal predecessors, (5495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:53,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 5495 transitions. [2022-01-28 14:36:53,508 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 5495 transitions. Word has length 25 [2022-01-28 14:36:53,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:53,508 INFO L470 AbstractCegarLoop]: Abstraction has 1388 states and 5495 transitions. [2022-01-28 14:36:53,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:53,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 5495 transitions. [2022-01-28 14:36:53,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:53,510 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:53,510 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:53,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable318 [2022-01-28 14:36:53,510 INFO L402 AbstractCegarLoop]: === Iteration 320 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:53,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:53,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1102789871, now seen corresponding path program 315 times [2022-01-28 14:36:53,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:53,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358567278] [2022-01-28 14:36:53,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:53,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:53,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:53,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:53,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:53,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358567278] [2022-01-28 14:36:53,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358567278] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:53,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:53,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:53,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127176125] [2022-01-28 14:36:53,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:53,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:53,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:53,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:53,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:53,601 INFO L87 Difference]: Start difference. First operand 1388 states and 5495 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:53,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:53,683 INFO L93 Difference]: Finished difference Result 2707 states and 9977 transitions. [2022-01-28 14:36:53,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:53,683 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:53,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:53,689 INFO L225 Difference]: With dead ends: 2707 [2022-01-28 14:36:53,690 INFO L226 Difference]: Without dead ends: 2548 [2022-01-28 14:36:53,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:53,690 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 97 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:53,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 171 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:53,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-01-28 14:36:53,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 1404. [2022-01-28 14:36:53,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1403 states have (on average 3.9508196721311477) internal successors, (5543), 1403 states have internal predecessors, (5543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:53,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 5543 transitions. [2022-01-28 14:36:53,718 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 5543 transitions. Word has length 25 [2022-01-28 14:36:53,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:53,718 INFO L470 AbstractCegarLoop]: Abstraction has 1404 states and 5543 transitions. [2022-01-28 14:36:53,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:53,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 5543 transitions. [2022-01-28 14:36:53,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:53,720 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:53,721 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:53,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable319 [2022-01-28 14:36:53,721 INFO L402 AbstractCegarLoop]: === Iteration 321 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:53,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:53,721 INFO L85 PathProgramCache]: Analyzing trace with hash 577706769, now seen corresponding path program 316 times [2022-01-28 14:36:53,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:53,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080444103] [2022-01-28 14:36:53,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:53,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:53,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:53,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:53,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:53,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080444103] [2022-01-28 14:36:53,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080444103] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:53,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:53,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:53,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115250530] [2022-01-28 14:36:53,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:53,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:53,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:53,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:53,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:53,797 INFO L87 Difference]: Start difference. First operand 1404 states and 5543 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:53,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:53,876 INFO L93 Difference]: Finished difference Result 2731 states and 10053 transitions. [2022-01-28 14:36:53,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:53,876 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:53,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:53,882 INFO L225 Difference]: With dead ends: 2731 [2022-01-28 14:36:53,882 INFO L226 Difference]: Without dead ends: 2532 [2022-01-28 14:36:53,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:53,883 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 101 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:53,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 156 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:53,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2532 states. [2022-01-28 14:36:53,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2532 to 1388. [2022-01-28 14:36:53,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1387 states have (on average 3.9560201874549388) internal successors, (5487), 1387 states have internal predecessors, (5487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:53,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 5487 transitions. [2022-01-28 14:36:53,910 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 5487 transitions. Word has length 25 [2022-01-28 14:36:53,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:53,910 INFO L470 AbstractCegarLoop]: Abstraction has 1388 states and 5487 transitions. [2022-01-28 14:36:53,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:53,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 5487 transitions. [2022-01-28 14:36:53,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:53,912 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:53,912 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:53,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable320 [2022-01-28 14:36:53,912 INFO L402 AbstractCegarLoop]: === Iteration 322 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:53,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:53,912 INFO L85 PathProgramCache]: Analyzing trace with hash 314372083, now seen corresponding path program 317 times [2022-01-28 14:36:53,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:53,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141840624] [2022-01-28 14:36:53,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:53,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:53,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:53,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:53,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141840624] [2022-01-28 14:36:53,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141840624] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:53,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:53,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:53,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583614208] [2022-01-28 14:36:53,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:53,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:53,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:53,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:53,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:53,989 INFO L87 Difference]: Start difference. First operand 1388 states and 5487 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:54,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:54,066 INFO L93 Difference]: Finished difference Result 2779 states and 10239 transitions. [2022-01-28 14:36:54,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:54,066 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:54,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:54,072 INFO L225 Difference]: With dead ends: 2779 [2022-01-28 14:36:54,072 INFO L226 Difference]: Without dead ends: 2590 [2022-01-28 14:36:54,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:54,072 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 115 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:54,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 150 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:36:54,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2590 states. [2022-01-28 14:36:54,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2590 to 1416. [2022-01-28 14:36:54,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1415 states have (on average 3.939929328621908) internal successors, (5575), 1415 states have internal predecessors, (5575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:54,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 5575 transitions. [2022-01-28 14:36:54,100 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 5575 transitions. Word has length 25 [2022-01-28 14:36:54,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:54,100 INFO L470 AbstractCegarLoop]: Abstraction has 1416 states and 5575 transitions. [2022-01-28 14:36:54,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:54,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 5575 transitions. [2022-01-28 14:36:54,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:54,103 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:54,103 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:54,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable321 [2022-01-28 14:36:54,103 INFO L402 AbstractCegarLoop]: === Iteration 323 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:54,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:54,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1077772463, now seen corresponding path program 318 times [2022-01-28 14:36:54,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:54,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478830399] [2022-01-28 14:36:54,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:54,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:54,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:54,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:54,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478830399] [2022-01-28 14:36:54,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478830399] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:54,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:54,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:54,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923752229] [2022-01-28 14:36:54,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:54,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:54,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:54,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:54,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:54,221 INFO L87 Difference]: Start difference. First operand 1416 states and 5575 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:54,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:54,330 INFO L93 Difference]: Finished difference Result 2773 states and 10194 transitions. [2022-01-28 14:36:54,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:54,330 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:54,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:54,336 INFO L225 Difference]: With dead ends: 2773 [2022-01-28 14:36:54,336 INFO L226 Difference]: Without dead ends: 2554 [2022-01-28 14:36:54,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:54,336 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 116 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:54,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 139 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:54,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2554 states. [2022-01-28 14:36:54,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2554 to 1380. [2022-01-28 14:36:54,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1379 states have (on average 3.9615663524292968) internal successors, (5463), 1379 states have internal predecessors, (5463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:54,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 5463 transitions. [2022-01-28 14:36:54,362 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 5463 transitions. Word has length 25 [2022-01-28 14:36:54,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:54,362 INFO L470 AbstractCegarLoop]: Abstraction has 1380 states and 5463 transitions. [2022-01-28 14:36:54,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:54,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 5463 transitions. [2022-01-28 14:36:54,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:54,364 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:54,364 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:54,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable322 [2022-01-28 14:36:54,364 INFO L402 AbstractCegarLoop]: === Iteration 324 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:54,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:54,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1376883951, now seen corresponding path program 319 times [2022-01-28 14:36:54,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:54,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879633749] [2022-01-28 14:36:54,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:54,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:54,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:54,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:54,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:54,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879633749] [2022-01-28 14:36:54,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879633749] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:54,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:54,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:54,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832380776] [2022-01-28 14:36:54,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:54,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:54,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:54,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:54,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:54,460 INFO L87 Difference]: Start difference. First operand 1380 states and 5463 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:54,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:54,560 INFO L93 Difference]: Finished difference Result 2677 states and 9854 transitions. [2022-01-28 14:36:54,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:54,560 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:54,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:54,566 INFO L225 Difference]: With dead ends: 2677 [2022-01-28 14:36:54,566 INFO L226 Difference]: Without dead ends: 2518 [2022-01-28 14:36:54,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:54,566 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 124 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:54,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 138 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:54,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2022-01-28 14:36:54,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 1404. [2022-01-28 14:36:54,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1403 states have (on average 3.9536707056307914) internal successors, (5547), 1403 states have internal predecessors, (5547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:54,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 5547 transitions. [2022-01-28 14:36:54,591 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 5547 transitions. Word has length 25 [2022-01-28 14:36:54,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:54,591 INFO L470 AbstractCegarLoop]: Abstraction has 1404 states and 5547 transitions. [2022-01-28 14:36:54,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:54,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 5547 transitions. [2022-01-28 14:36:54,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:54,593 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:54,593 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:54,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable323 [2022-01-28 14:36:54,594 INFO L402 AbstractCegarLoop]: === Iteration 325 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:54,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:54,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1328148595, now seen corresponding path program 320 times [2022-01-28 14:36:54,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:54,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538456783] [2022-01-28 14:36:54,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:54,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:54,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:54,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:54,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:54,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538456783] [2022-01-28 14:36:54,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538456783] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:54,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:54,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:54,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370858668] [2022-01-28 14:36:54,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:54,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:54,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:54,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:54,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:54,680 INFO L87 Difference]: Start difference. First operand 1404 states and 5547 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:54,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:54,790 INFO L93 Difference]: Finished difference Result 2707 states and 9947 transitions. [2022-01-28 14:36:54,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:54,790 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:54,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:54,796 INFO L225 Difference]: With dead ends: 2707 [2022-01-28 14:36:54,796 INFO L226 Difference]: Without dead ends: 2502 [2022-01-28 14:36:54,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:54,796 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 104 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:54,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 158 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:54,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2502 states. [2022-01-28 14:36:54,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2502 to 1388. [2022-01-28 14:36:54,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1387 states have (on average 3.958904109589041) internal successors, (5491), 1387 states have internal predecessors, (5491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:54,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 5491 transitions. [2022-01-28 14:36:54,820 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 5491 transitions. Word has length 25 [2022-01-28 14:36:54,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:54,820 INFO L470 AbstractCegarLoop]: Abstraction has 1388 states and 5491 transitions. [2022-01-28 14:36:54,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:54,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 5491 transitions. [2022-01-28 14:36:54,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:54,822 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:54,822 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:54,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable324 [2022-01-28 14:36:54,822 INFO L402 AbstractCegarLoop]: === Iteration 326 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:54,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:54,823 INFO L85 PathProgramCache]: Analyzing trace with hash -58033519, now seen corresponding path program 321 times [2022-01-28 14:36:54,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:54,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159788799] [2022-01-28 14:36:54,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:54,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:54,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:54,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:54,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:54,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159788799] [2022-01-28 14:36:54,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159788799] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:54,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:54,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:54,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109360941] [2022-01-28 14:36:54,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:54,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:54,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:54,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:54,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:54,950 INFO L87 Difference]: Start difference. First operand 1388 states and 5491 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:55,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:55,023 INFO L93 Difference]: Finished difference Result 2631 states and 9689 transitions. [2022-01-28 14:36:55,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:55,024 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:55,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:55,030 INFO L225 Difference]: With dead ends: 2631 [2022-01-28 14:36:55,031 INFO L226 Difference]: Without dead ends: 2472 [2022-01-28 14:36:55,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:55,031 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 123 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:55,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 136 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:36:55,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-01-28 14:36:55,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1404. [2022-01-28 14:36:55,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1403 states have (on average 3.947968638631504) internal successors, (5539), 1403 states have internal predecessors, (5539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:55,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 5539 transitions. [2022-01-28 14:36:55,062 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 5539 transitions. Word has length 25 [2022-01-28 14:36:55,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:55,062 INFO L470 AbstractCegarLoop]: Abstraction has 1404 states and 5539 transitions. [2022-01-28 14:36:55,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:55,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 5539 transitions. [2022-01-28 14:36:55,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:55,065 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:55,065 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:55,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable325 [2022-01-28 14:36:55,066 INFO L402 AbstractCegarLoop]: === Iteration 327 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:55,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:55,066 INFO L85 PathProgramCache]: Analyzing trace with hash -2000305519, now seen corresponding path program 322 times [2022-01-28 14:36:55,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:55,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149192693] [2022-01-28 14:36:55,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:55,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:55,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:55,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:55,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:55,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149192693] [2022-01-28 14:36:55,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149192693] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:55,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:55,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:55,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353343548] [2022-01-28 14:36:55,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:55,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:55,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:55,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:55,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:55,146 INFO L87 Difference]: Start difference. First operand 1404 states and 5539 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:55,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:55,229 INFO L93 Difference]: Finished difference Result 2519 states and 9352 transitions. [2022-01-28 14:36:55,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:55,229 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:55,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:55,234 INFO L225 Difference]: With dead ends: 2519 [2022-01-28 14:36:55,234 INFO L226 Difference]: Without dead ends: 2328 [2022-01-28 14:36:55,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:55,235 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 96 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:55,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 159 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:55,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2328 states. [2022-01-28 14:36:55,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2328 to 1388. [2022-01-28 14:36:55,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1387 states have (on average 3.953136265320836) internal successors, (5483), 1387 states have internal predecessors, (5483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:55,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 5483 transitions. [2022-01-28 14:36:55,261 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 5483 transitions. Word has length 25 [2022-01-28 14:36:55,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:55,261 INFO L470 AbstractCegarLoop]: Abstraction has 1388 states and 5483 transitions. [2022-01-28 14:36:55,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:55,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 5483 transitions. [2022-01-28 14:36:55,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:55,263 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:55,263 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:55,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable326 [2022-01-28 14:36:55,263 INFO L402 AbstractCegarLoop]: === Iteration 328 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:55,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:55,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1359128435, now seen corresponding path program 323 times [2022-01-28 14:36:55,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:55,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155719029] [2022-01-28 14:36:55,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:55,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:55,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:55,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:55,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:55,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155719029] [2022-01-28 14:36:55,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155719029] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:55,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:55,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:55,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7252656] [2022-01-28 14:36:55,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:55,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:55,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:55,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:55,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:55,390 INFO L87 Difference]: Start difference. First operand 1388 states and 5483 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:55,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:55,486 INFO L93 Difference]: Finished difference Result 2669 states and 9826 transitions. [2022-01-28 14:36:55,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:55,486 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:55,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:55,492 INFO L225 Difference]: With dead ends: 2669 [2022-01-28 14:36:55,492 INFO L226 Difference]: Without dead ends: 2480 [2022-01-28 14:36:55,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:55,493 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 112 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:55,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 144 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:55,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2480 states. [2022-01-28 14:36:55,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2480 to 1412. [2022-01-28 14:36:55,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1411 states have (on average 3.9397590361445785) internal successors, (5559), 1411 states have internal predecessors, (5559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:55,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 5559 transitions. [2022-01-28 14:36:55,521 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 5559 transitions. Word has length 25 [2022-01-28 14:36:55,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:55,521 INFO L470 AbstractCegarLoop]: Abstraction has 1412 states and 5559 transitions. [2022-01-28 14:36:55,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:55,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 5559 transitions. [2022-01-28 14:36:55,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:55,523 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:55,523 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:55,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable327 [2022-01-28 14:36:55,524 INFO L402 AbstractCegarLoop]: === Iteration 329 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:55,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:55,524 INFO L85 PathProgramCache]: Analyzing trace with hash 618176337, now seen corresponding path program 324 times [2022-01-28 14:36:55,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:55,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479254275] [2022-01-28 14:36:55,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:55,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:55,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:55,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:55,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:55,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479254275] [2022-01-28 14:36:55,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479254275] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:55,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:55,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:55,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722183635] [2022-01-28 14:36:55,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:55,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:55,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:55,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:55,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:55,651 INFO L87 Difference]: Start difference. First operand 1412 states and 5559 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:55,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:55,768 INFO L93 Difference]: Finished difference Result 2527 states and 9372 transitions. [2022-01-28 14:36:55,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:55,769 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:55,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:55,774 INFO L225 Difference]: With dead ends: 2527 [2022-01-28 14:36:55,774 INFO L226 Difference]: Without dead ends: 2320 [2022-01-28 14:36:55,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:55,775 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 93 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:55,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 157 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:55,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2022-01-28 14:36:55,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 1380. [2022-01-28 14:36:55,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1379 states have (on average 3.958665699782451) internal successors, (5459), 1379 states have internal predecessors, (5459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:55,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 5459 transitions. [2022-01-28 14:36:55,798 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 5459 transitions. Word has length 25 [2022-01-28 14:36:55,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:55,798 INFO L470 AbstractCegarLoop]: Abstraction has 1380 states and 5459 transitions. [2022-01-28 14:36:55,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:55,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 5459 transitions. [2022-01-28 14:36:55,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:55,800 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:55,800 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:55,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable328 [2022-01-28 14:36:55,801 INFO L402 AbstractCegarLoop]: === Iteration 330 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:55,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:55,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1325160051, now seen corresponding path program 325 times [2022-01-28 14:36:55,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:55,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092545985] [2022-01-28 14:36:55,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:55,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:55,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:55,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:55,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:55,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092545985] [2022-01-28 14:36:55,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092545985] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:55,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:55,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:55,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826194678] [2022-01-28 14:36:55,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:55,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:55,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:55,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:55,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:55,887 INFO L87 Difference]: Start difference. First operand 1380 states and 5459 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:55,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:55,962 INFO L93 Difference]: Finished difference Result 2633 states and 9704 transitions. [2022-01-28 14:36:55,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:55,963 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:55,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:55,968 INFO L225 Difference]: With dead ends: 2633 [2022-01-28 14:36:55,969 INFO L226 Difference]: Without dead ends: 2474 [2022-01-28 14:36:55,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:55,969 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 116 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:55,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 138 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:55,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2474 states. [2022-01-28 14:36:55,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2474 to 1404. [2022-01-28 14:36:55,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1403 states have (on average 3.9508196721311477) internal successors, (5543), 1403 states have internal predecessors, (5543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:55,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 5543 transitions. [2022-01-28 14:36:55,994 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 5543 transitions. Word has length 25 [2022-01-28 14:36:55,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:55,994 INFO L470 AbstractCegarLoop]: Abstraction has 1404 states and 5543 transitions. [2022-01-28 14:36:55,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:55,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 5543 transitions. [2022-01-28 14:36:55,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:55,996 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:55,996 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:55,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable329 [2022-01-28 14:36:55,996 INFO L402 AbstractCegarLoop]: === Iteration 331 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:55,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:55,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1289310605, now seen corresponding path program 326 times [2022-01-28 14:36:55,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:55,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929676034] [2022-01-28 14:36:55,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:55,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:55,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:56,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:56,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:56,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929676034] [2022-01-28 14:36:56,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929676034] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:56,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:56,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:56,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076486507] [2022-01-28 14:36:56,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:56,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:56,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:56,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:56,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:56,082 INFO L87 Difference]: Start difference. First operand 1404 states and 5543 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:56,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:56,161 INFO L93 Difference]: Finished difference Result 2657 states and 9780 transitions. [2022-01-28 14:36:56,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:56,161 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:56,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:56,167 INFO L225 Difference]: With dead ends: 2657 [2022-01-28 14:36:56,167 INFO L226 Difference]: Without dead ends: 2458 [2022-01-28 14:36:56,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:56,167 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 103 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:56,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 156 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:36:56,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2458 states. [2022-01-28 14:36:56,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2458 to 1388. [2022-01-28 14:36:56,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1387 states have (on average 3.9560201874549388) internal successors, (5487), 1387 states have internal predecessors, (5487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:56,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 5487 transitions. [2022-01-28 14:36:56,205 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 5487 transitions. Word has length 25 [2022-01-28 14:36:56,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:56,205 INFO L470 AbstractCegarLoop]: Abstraction has 1388 states and 5487 transitions. [2022-01-28 14:36:56,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:56,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 5487 transitions. [2022-01-28 14:36:56,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:56,208 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:56,208 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:56,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable330 [2022-01-28 14:36:56,208 INFO L402 AbstractCegarLoop]: === Iteration 332 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:56,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:56,208 INFO L85 PathProgramCache]: Analyzing trace with hash 478363089, now seen corresponding path program 327 times [2022-01-28 14:36:56,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:56,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687508543] [2022-01-28 14:36:56,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:56,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:56,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:56,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:56,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:56,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687508543] [2022-01-28 14:36:56,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687508543] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:56,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:56,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:56,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990452107] [2022-01-28 14:36:56,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:56,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:56,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:56,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:56,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:56,287 INFO L87 Difference]: Start difference. First operand 1388 states and 5487 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:56,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:56,371 INFO L93 Difference]: Finished difference Result 2577 states and 9492 transitions. [2022-01-28 14:36:56,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:56,371 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:56,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:56,377 INFO L225 Difference]: With dead ends: 2577 [2022-01-28 14:36:56,377 INFO L226 Difference]: Without dead ends: 2418 [2022-01-28 14:36:56,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:56,377 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 107 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:56,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 150 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:56,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2418 states. [2022-01-28 14:36:56,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2418 to 1404. [2022-01-28 14:36:56,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1403 states have (on average 3.9451176051318604) internal successors, (5535), 1403 states have internal predecessors, (5535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:56,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 5535 transitions. [2022-01-28 14:36:56,404 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 5535 transitions. Word has length 25 [2022-01-28 14:36:56,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:56,404 INFO L470 AbstractCegarLoop]: Abstraction has 1404 states and 5535 transitions. [2022-01-28 14:36:56,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:56,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 5535 transitions. [2022-01-28 14:36:56,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:56,406 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:56,406 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:56,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable331 [2022-01-28 14:36:56,406 INFO L402 AbstractCegarLoop]: === Iteration 333 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:56,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:56,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1120702067, now seen corresponding path program 328 times [2022-01-28 14:36:56,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:56,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703665092] [2022-01-28 14:36:56,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:56,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:56,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:56,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:56,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:56,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703665092] [2022-01-28 14:36:56,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703665092] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:56,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:56,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:56,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096549455] [2022-01-28 14:36:56,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:56,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:56,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:56,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:56,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:56,486 INFO L87 Difference]: Start difference. First operand 1404 states and 5535 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:56,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:56,566 INFO L93 Difference]: Finished difference Result 2465 states and 9155 transitions. [2022-01-28 14:36:56,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:56,566 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:56,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:56,571 INFO L225 Difference]: With dead ends: 2465 [2022-01-28 14:36:56,571 INFO L226 Difference]: Without dead ends: 2274 [2022-01-28 14:36:56,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:56,572 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 94 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:56,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 157 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:56,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2274 states. [2022-01-28 14:36:56,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2274 to 1388. [2022-01-28 14:36:56,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1387 states have (on average 3.950252343186734) internal successors, (5479), 1387 states have internal predecessors, (5479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:56,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 5479 transitions. [2022-01-28 14:36:56,595 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 5479 transitions. Word has length 25 [2022-01-28 14:36:56,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:56,596 INFO L470 AbstractCegarLoop]: Abstraction has 1388 states and 5479 transitions. [2022-01-28 14:36:56,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:56,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 5479 transitions. [2022-01-28 14:36:56,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:56,598 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:56,598 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:56,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable332 [2022-01-28 14:36:56,598 INFO L402 AbstractCegarLoop]: === Iteration 334 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:56,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:56,598 INFO L85 PathProgramCache]: Analyzing trace with hash 498071155, now seen corresponding path program 329 times [2022-01-28 14:36:56,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:56,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250105367] [2022-01-28 14:36:56,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:56,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:56,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:56,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:56,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:56,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250105367] [2022-01-28 14:36:56,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250105367] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:56,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:56,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:56,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79123290] [2022-01-28 14:36:56,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:56,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:56,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:56,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:56,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:56,672 INFO L87 Difference]: Start difference. First operand 1388 states and 5479 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:56,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:56,745 INFO L93 Difference]: Finished difference Result 2481 states and 9227 transitions. [2022-01-28 14:36:56,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:56,746 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:56,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:56,751 INFO L225 Difference]: With dead ends: 2481 [2022-01-28 14:36:56,751 INFO L226 Difference]: Without dead ends: 2298 [2022-01-28 14:36:56,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:56,752 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 95 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:56,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 144 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:36:56,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2298 states. [2022-01-28 14:36:56,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2298 to 1412. [2022-01-28 14:36:56,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1411 states have (on average 3.9369241672572644) internal successors, (5555), 1411 states have internal predecessors, (5555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:56,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 5555 transitions. [2022-01-28 14:36:56,779 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 5555 transitions. Word has length 25 [2022-01-28 14:36:56,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:56,779 INFO L470 AbstractCegarLoop]: Abstraction has 1412 states and 5555 transitions. [2022-01-28 14:36:56,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:56,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 5555 transitions. [2022-01-28 14:36:56,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:56,781 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:56,781 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:56,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable333 [2022-01-28 14:36:56,781 INFO L402 AbstractCegarLoop]: === Iteration 335 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:56,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:56,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1545265839, now seen corresponding path program 330 times [2022-01-28 14:36:56,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:56,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253167840] [2022-01-28 14:36:56,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:56,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:56,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:56,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:56,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:56,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253167840] [2022-01-28 14:36:56,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253167840] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:56,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:56,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:56,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868733518] [2022-01-28 14:36:56,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:56,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:56,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:56,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:56,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:56,859 INFO L87 Difference]: Start difference. First operand 1412 states and 5555 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:56,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:56,941 INFO L93 Difference]: Finished difference Result 2297 states and 8614 transitions. [2022-01-28 14:36:56,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:56,941 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:56,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:56,947 INFO L225 Difference]: With dead ends: 2297 [2022-01-28 14:36:56,947 INFO L226 Difference]: Without dead ends: 2090 [2022-01-28 14:36:56,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:56,947 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 93 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:56,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 131 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:56,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2022-01-28 14:36:56,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 1380. [2022-01-28 14:36:56,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1379 states have (on average 3.9557650471356056) internal successors, (5455), 1379 states have internal predecessors, (5455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:56,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 5455 transitions. [2022-01-28 14:36:56,973 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 5455 transitions. Word has length 25 [2022-01-28 14:36:56,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:56,973 INFO L470 AbstractCegarLoop]: Abstraction has 1380 states and 5455 transitions. [2022-01-28 14:36:56,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:56,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 5455 transitions. [2022-01-28 14:36:56,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:56,975 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:56,975 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:56,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable334 [2022-01-28 14:36:56,976 INFO L402 AbstractCegarLoop]: === Iteration 336 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:56,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:56,976 INFO L85 PathProgramCache]: Analyzing trace with hash 2049264341, now seen corresponding path program 331 times [2022-01-28 14:36:56,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:56,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495861177] [2022-01-28 14:36:56,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:56,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:57,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:57,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:57,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495861177] [2022-01-28 14:36:57,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495861177] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:57,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:57,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:57,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017235835] [2022-01-28 14:36:57,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:57,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:57,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:57,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:57,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:57,107 INFO L87 Difference]: Start difference. First operand 1380 states and 5455 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:57,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:57,217 INFO L93 Difference]: Finished difference Result 2717 states and 10026 transitions. [2022-01-28 14:36:57,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:57,217 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:57,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:57,223 INFO L225 Difference]: With dead ends: 2717 [2022-01-28 14:36:57,223 INFO L226 Difference]: Without dead ends: 2528 [2022-01-28 14:36:57,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:57,223 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 106 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:57,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 150 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:57,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2528 states. [2022-01-28 14:36:57,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2528 to 1420. [2022-01-28 14:36:57,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 1419 states have (on average 3.945736434108527) internal successors, (5599), 1419 states have internal predecessors, (5599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:57,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 5599 transitions. [2022-01-28 14:36:57,258 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 5599 transitions. Word has length 25 [2022-01-28 14:36:57,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:57,258 INFO L470 AbstractCegarLoop]: Abstraction has 1420 states and 5599 transitions. [2022-01-28 14:36:57,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:57,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 5599 transitions. [2022-01-28 14:36:57,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:57,261 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:57,261 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:57,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable335 [2022-01-28 14:36:57,261 INFO L402 AbstractCegarLoop]: === Iteration 337 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:57,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:57,262 INFO L85 PathProgramCache]: Analyzing trace with hash 657119795, now seen corresponding path program 332 times [2022-01-28 14:36:57,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:57,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426192428] [2022-01-28 14:36:57,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:57,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:57,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:57,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:57,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:57,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426192428] [2022-01-28 14:36:57,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426192428] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:57,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:57,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:57,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656356991] [2022-01-28 14:36:57,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:57,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:57,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:57,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:57,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:57,393 INFO L87 Difference]: Start difference. First operand 1420 states and 5599 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:57,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:57,483 INFO L93 Difference]: Finished difference Result 2711 states and 9981 transitions. [2022-01-28 14:36:57,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:57,483 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:57,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:57,488 INFO L225 Difference]: With dead ends: 2711 [2022-01-28 14:36:57,489 INFO L226 Difference]: Without dead ends: 2500 [2022-01-28 14:36:57,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:57,489 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 112 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:57,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 137 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:57,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2500 states. [2022-01-28 14:36:57,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2500 to 1392. [2022-01-28 14:36:57,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1391 states have (on average 3.953271028037383) internal successors, (5499), 1391 states have internal predecessors, (5499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:57,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 5499 transitions. [2022-01-28 14:36:57,514 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 5499 transitions. Word has length 25 [2022-01-28 14:36:57,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:57,514 INFO L470 AbstractCegarLoop]: Abstraction has 1392 states and 5499 transitions. [2022-01-28 14:36:57,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:57,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 5499 transitions. [2022-01-28 14:36:57,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:57,516 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:57,516 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:57,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable336 [2022-01-28 14:36:57,516 INFO L402 AbstractCegarLoop]: === Iteration 338 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:57,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:57,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1202467379, now seen corresponding path program 333 times [2022-01-28 14:36:57,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:57,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628012112] [2022-01-28 14:36:57,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:57,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:57,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:57,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:57,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:57,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628012112] [2022-01-28 14:36:57,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628012112] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:57,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:57,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:57,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24421242] [2022-01-28 14:36:57,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:57,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:57,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:57,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:57,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:57,606 INFO L87 Difference]: Start difference. First operand 1392 states and 5499 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:57,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:57,713 INFO L93 Difference]: Finished difference Result 2619 states and 9649 transitions. [2022-01-28 14:36:57,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:57,713 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:57,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:57,719 INFO L225 Difference]: With dead ends: 2619 [2022-01-28 14:36:57,719 INFO L226 Difference]: Without dead ends: 2430 [2022-01-28 14:36:57,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:57,719 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 95 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:57,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 163 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:57,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2430 states. [2022-01-28 14:36:57,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2430 to 1416. [2022-01-28 14:36:57,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1415 states have (on average 3.939929328621908) internal successors, (5575), 1415 states have internal predecessors, (5575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:57,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 5575 transitions. [2022-01-28 14:36:57,745 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 5575 transitions. Word has length 25 [2022-01-28 14:36:57,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:57,745 INFO L470 AbstractCegarLoop]: Abstraction has 1416 states and 5575 transitions. [2022-01-28 14:36:57,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:57,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 5575 transitions. [2022-01-28 14:36:57,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:57,747 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:57,747 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:57,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable337 [2022-01-28 14:36:57,747 INFO L402 AbstractCegarLoop]: === Iteration 339 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:57,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:57,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1248841037, now seen corresponding path program 334 times [2022-01-28 14:36:57,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:57,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568459075] [2022-01-28 14:36:57,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:57,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:57,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:57,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:57,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:57,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568459075] [2022-01-28 14:36:57,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568459075] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:57,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:57,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:57,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130096985] [2022-01-28 14:36:57,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:57,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:57,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:57,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:57,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:57,855 INFO L87 Difference]: Start difference. First operand 1416 states and 5575 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:57,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:57,963 INFO L93 Difference]: Finished difference Result 2477 states and 9195 transitions. [2022-01-28 14:36:57,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:57,963 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:57,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:57,969 INFO L225 Difference]: With dead ends: 2477 [2022-01-28 14:36:57,969 INFO L226 Difference]: Without dead ends: 2278 [2022-01-28 14:36:57,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:57,969 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 91 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:57,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 151 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:57,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2278 states. [2022-01-28 14:36:57,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2278 to 1392. [2022-01-28 14:36:57,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1391 states have (on average 3.9446441409058233) internal successors, (5487), 1391 states have internal predecessors, (5487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:57,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 5487 transitions. [2022-01-28 14:36:57,993 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 5487 transitions. Word has length 25 [2022-01-28 14:36:57,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:57,993 INFO L470 AbstractCegarLoop]: Abstraction has 1392 states and 5487 transitions. [2022-01-28 14:36:57,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:57,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 5487 transitions. [2022-01-28 14:36:57,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:57,995 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:57,996 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:57,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable338 [2022-01-28 14:36:57,996 INFO L402 AbstractCegarLoop]: === Iteration 340 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:57,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:57,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1566724753, now seen corresponding path program 335 times [2022-01-28 14:36:57,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:57,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137400369] [2022-01-28 14:36:57,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:57,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:57,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:58,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:58,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:58,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137400369] [2022-01-28 14:36:58,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137400369] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:58,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:58,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:58,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723374316] [2022-01-28 14:36:58,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:58,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:58,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:58,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:58,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:58,117 INFO L87 Difference]: Start difference. First operand 1392 states and 5487 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:58,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:58,226 INFO L93 Difference]: Finished difference Result 2485 states and 9235 transitions. [2022-01-28 14:36:58,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:58,227 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:58,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:58,232 INFO L225 Difference]: With dead ends: 2485 [2022-01-28 14:36:58,232 INFO L226 Difference]: Without dead ends: 2302 [2022-01-28 14:36:58,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:58,232 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 93 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:58,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 154 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:58,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2302 states. [2022-01-28 14:36:58,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2302 to 1416. [2022-01-28 14:36:58,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1415 states have (on average 3.9314487632508834) internal successors, (5563), 1415 states have internal predecessors, (5563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:58,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 5563 transitions. [2022-01-28 14:36:58,259 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 5563 transitions. Word has length 25 [2022-01-28 14:36:58,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:58,260 INFO L470 AbstractCegarLoop]: Abstraction has 1416 states and 5563 transitions. [2022-01-28 14:36:58,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:58,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 5563 transitions. [2022-01-28 14:36:58,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:58,262 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:58,262 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:58,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable339 [2022-01-28 14:36:58,262 INFO L402 AbstractCegarLoop]: === Iteration 341 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:58,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:58,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1647179917, now seen corresponding path program 336 times [2022-01-28 14:36:58,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:58,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137880897] [2022-01-28 14:36:58,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:58,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:58,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:58,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:58,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:58,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137880897] [2022-01-28 14:36:58,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137880897] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:58,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:58,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:58,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209783342] [2022-01-28 14:36:58,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:58,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:58,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:58,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:58,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:58,348 INFO L87 Difference]: Start difference. First operand 1416 states and 5563 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:58,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:58,419 INFO L93 Difference]: Finished difference Result 2301 states and 8622 transitions. [2022-01-28 14:36:58,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:58,419 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:58,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:58,423 INFO L225 Difference]: With dead ends: 2301 [2022-01-28 14:36:58,423 INFO L226 Difference]: Without dead ends: 2086 [2022-01-28 14:36:58,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:58,423 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 85 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:58,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 135 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:36:58,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2086 states. [2022-01-28 14:36:58,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2086 to 1376. [2022-01-28 14:36:58,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1376 states, 1375 states have (on average 3.96) internal successors, (5445), 1375 states have internal predecessors, (5445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:58,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 5445 transitions. [2022-01-28 14:36:58,445 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 5445 transitions. Word has length 25 [2022-01-28 14:36:58,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:58,445 INFO L470 AbstractCegarLoop]: Abstraction has 1376 states and 5445 transitions. [2022-01-28 14:36:58,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:58,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 5445 transitions. [2022-01-28 14:36:58,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:58,447 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:58,447 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:58,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable340 [2022-01-28 14:36:58,447 INFO L402 AbstractCegarLoop]: === Iteration 342 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:58,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:58,448 INFO L85 PathProgramCache]: Analyzing trace with hash 80867255, now seen corresponding path program 337 times [2022-01-28 14:36:58,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:58,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752401463] [2022-01-28 14:36:58,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:58,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:58,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:58,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:58,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:58,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752401463] [2022-01-28 14:36:58,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752401463] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:58,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:58,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:58,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548676420] [2022-01-28 14:36:58,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:58,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:58,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:58,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:58,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:58,536 INFO L87 Difference]: Start difference. First operand 1376 states and 5445 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:58,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:58,626 INFO L93 Difference]: Finished difference Result 3065 states and 11402 transitions. [2022-01-28 14:36:58,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:58,626 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:58,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:58,633 INFO L225 Difference]: With dead ends: 3065 [2022-01-28 14:36:58,633 INFO L226 Difference]: Without dead ends: 2876 [2022-01-28 14:36:58,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:58,633 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 111 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:58,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 144 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:58,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2876 states. [2022-01-28 14:36:58,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2876 to 1430. [2022-01-28 14:36:58,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1430 states, 1429 states have (on average 3.9580125962211334) internal successors, (5656), 1429 states have internal predecessors, (5656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:58,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 5656 transitions. [2022-01-28 14:36:58,667 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 5656 transitions. Word has length 25 [2022-01-28 14:36:58,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:58,667 INFO L470 AbstractCegarLoop]: Abstraction has 1430 states and 5656 transitions. [2022-01-28 14:36:58,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:58,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 5656 transitions. [2022-01-28 14:36:58,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:58,669 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:58,669 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:58,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable341 [2022-01-28 14:36:58,669 INFO L402 AbstractCegarLoop]: === Iteration 343 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:58,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:58,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1311277291, now seen corresponding path program 338 times [2022-01-28 14:36:58,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:58,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56000280] [2022-01-28 14:36:58,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:58,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:58,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:58,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:58,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:58,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56000280] [2022-01-28 14:36:58,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56000280] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:58,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:58,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:58,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439658874] [2022-01-28 14:36:58,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:58,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:58,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:58,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:58,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:58,791 INFO L87 Difference]: Start difference. First operand 1430 states and 5656 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:58,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:58,900 INFO L93 Difference]: Finished difference Result 3059 states and 11357 transitions. [2022-01-28 14:36:58,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:58,900 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:58,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:58,907 INFO L225 Difference]: With dead ends: 3059 [2022-01-28 14:36:58,907 INFO L226 Difference]: Without dead ends: 2848 [2022-01-28 14:36:58,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:58,907 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 114 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:58,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 140 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:58,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2848 states. [2022-01-28 14:36:58,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2848 to 1402. [2022-01-28 14:36:58,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1402 states, 1401 states have (on average 3.9657387580299788) internal successors, (5556), 1401 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:58,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 5556 transitions. [2022-01-28 14:36:58,939 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 5556 transitions. Word has length 25 [2022-01-28 14:36:58,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:58,939 INFO L470 AbstractCegarLoop]: Abstraction has 1402 states and 5556 transitions. [2022-01-28 14:36:58,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:58,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 5556 transitions. [2022-01-28 14:36:58,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:58,942 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:58,942 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:58,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable342 [2022-01-28 14:36:58,942 INFO L402 AbstractCegarLoop]: === Iteration 344 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:58,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:58,942 INFO L85 PathProgramCache]: Analyzing trace with hash -765929707, now seen corresponding path program 339 times [2022-01-28 14:36:58,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:58,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155370493] [2022-01-28 14:36:58,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:58,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:59,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:59,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:59,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155370493] [2022-01-28 14:36:59,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155370493] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:59,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:59,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:59,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174912534] [2022-01-28 14:36:59,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:59,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:59,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:59,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:59,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:59,061 INFO L87 Difference]: Start difference. First operand 1402 states and 5556 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:59,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:59,161 INFO L93 Difference]: Finished difference Result 3053 states and 11346 transitions. [2022-01-28 14:36:59,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:59,161 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:59,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:59,169 INFO L225 Difference]: With dead ends: 3053 [2022-01-28 14:36:59,170 INFO L226 Difference]: Without dead ends: 2864 [2022-01-28 14:36:59,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:59,170 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 118 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:59,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 133 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:59,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2864 states. [2022-01-28 14:36:59,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2864 to 1426. [2022-01-28 14:36:59,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 1425 states have (on average 3.952280701754386) internal successors, (5632), 1425 states have internal predecessors, (5632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:59,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 5632 transitions. [2022-01-28 14:36:59,220 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 5632 transitions. Word has length 25 [2022-01-28 14:36:59,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:59,220 INFO L470 AbstractCegarLoop]: Abstraction has 1426 states and 5632 transitions. [2022-01-28 14:36:59,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:59,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 5632 transitions. [2022-01-28 14:36:59,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:59,222 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:59,222 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:59,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable343 [2022-01-28 14:36:59,222 INFO L402 AbstractCegarLoop]: === Iteration 345 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:59,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:59,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1077729173, now seen corresponding path program 340 times [2022-01-28 14:36:59,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:59,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112977635] [2022-01-28 14:36:59,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:59,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:59,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:59,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:59,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:59,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112977635] [2022-01-28 14:36:59,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112977635] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:59,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:59,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:59,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027559752] [2022-01-28 14:36:59,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:59,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:59,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:59,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:59,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:59,301 INFO L87 Difference]: Start difference. First operand 1426 states and 5632 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:59,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:59,390 INFO L93 Difference]: Finished difference Result 3039 states and 11277 transitions. [2022-01-28 14:36:59,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:59,390 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:59,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:59,396 INFO L225 Difference]: With dead ends: 3039 [2022-01-28 14:36:59,396 INFO L226 Difference]: Without dead ends: 2840 [2022-01-28 14:36:59,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:59,396 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 106 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:59,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 164 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:59,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2840 states. [2022-01-28 14:36:59,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2840 to 1402. [2022-01-28 14:36:59,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1402 states, 1401 states have (on average 3.9571734475374734) internal successors, (5544), 1401 states have internal predecessors, (5544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:59,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 5544 transitions. [2022-01-28 14:36:59,426 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 5544 transitions. Word has length 25 [2022-01-28 14:36:59,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:59,426 INFO L470 AbstractCegarLoop]: Abstraction has 1402 states and 5544 transitions. [2022-01-28 14:36:59,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:59,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 5544 transitions. [2022-01-28 14:36:59,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:59,428 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:59,428 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:59,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable344 [2022-01-28 14:36:59,428 INFO L402 AbstractCegarLoop]: === Iteration 346 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:59,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:59,428 INFO L85 PathProgramCache]: Analyzing trace with hash -401672333, now seen corresponding path program 341 times [2022-01-28 14:36:59,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:59,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923294358] [2022-01-28 14:36:59,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:59,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:59,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:59,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:59,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:59,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923294358] [2022-01-28 14:36:59,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923294358] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:59,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:59,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:59,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46658756] [2022-01-28 14:36:59,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:59,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:59,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:59,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:59,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:59,519 INFO L87 Difference]: Start difference. First operand 1402 states and 5544 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:59,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:59,636 INFO L93 Difference]: Finished difference Result 3041 states and 11300 transitions. [2022-01-28 14:36:59,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:59,636 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:59,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:59,642 INFO L225 Difference]: With dead ends: 3041 [2022-01-28 14:36:59,643 INFO L226 Difference]: Without dead ends: 2858 [2022-01-28 14:36:59,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:59,643 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 99 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:59,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 151 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:59,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2858 states. [2022-01-28 14:36:59,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2858 to 1426. [2022-01-28 14:36:59,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 1425 states have (on average 3.943859649122807) internal successors, (5620), 1425 states have internal predecessors, (5620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:59,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 5620 transitions. [2022-01-28 14:36:59,676 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 5620 transitions. Word has length 25 [2022-01-28 14:36:59,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:59,676 INFO L470 AbstractCegarLoop]: Abstraction has 1426 states and 5620 transitions. [2022-01-28 14:36:59,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:59,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 5620 transitions. [2022-01-28 14:36:59,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:59,678 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:59,678 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:59,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable345 [2022-01-28 14:36:59,678 INFO L402 AbstractCegarLoop]: === Iteration 347 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:59,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:59,679 INFO L85 PathProgramCache]: Analyzing trace with hash 679390293, now seen corresponding path program 342 times [2022-01-28 14:36:59,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:59,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443586468] [2022-01-28 14:36:59,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:59,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:36:59,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:36:59,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:36:59,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443586468] [2022-01-28 14:36:59,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443586468] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:36:59,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:36:59,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:36:59,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055076343] [2022-01-28 14:36:59,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:36:59,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:36:59,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:36:59,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:36:59,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:36:59,797 INFO L87 Difference]: Start difference. First operand 1426 states and 5620 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:59,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:36:59,922 INFO L93 Difference]: Finished difference Result 3033 states and 11248 transitions. [2022-01-28 14:36:59,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:36:59,922 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:36:59,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:36:59,928 INFO L225 Difference]: With dead ends: 3033 [2022-01-28 14:36:59,929 INFO L226 Difference]: Without dead ends: 2822 [2022-01-28 14:36:59,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:36:59,929 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 93 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:36:59,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 159 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:36:59,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2822 states. [2022-01-28 14:36:59,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2822 to 1390. [2022-01-28 14:36:59,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1390 states, 1389 states have (on average 3.9640028797696183) internal successors, (5506), 1389 states have internal predecessors, (5506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:59,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 5506 transitions. [2022-01-28 14:36:59,956 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 5506 transitions. Word has length 25 [2022-01-28 14:36:59,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:36:59,956 INFO L470 AbstractCegarLoop]: Abstraction has 1390 states and 5506 transitions. [2022-01-28 14:36:59,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:36:59,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 5506 transitions. [2022-01-28 14:36:59,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:36:59,959 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:36:59,959 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:36:59,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable346 [2022-01-28 14:36:59,959 INFO L402 AbstractCegarLoop]: === Iteration 348 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:36:59,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:36:59,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1882487659, now seen corresponding path program 343 times [2022-01-28 14:36:59,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:36:59,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132048339] [2022-01-28 14:36:59,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:36:59,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:36:59,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:00,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:00,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:00,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132048339] [2022-01-28 14:37:00,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132048339] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:00,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:00,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:00,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605633339] [2022-01-28 14:37:00,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:00,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:00,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:00,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:00,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:00,068 INFO L87 Difference]: Start difference. First operand 1390 states and 5506 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:00,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:00,169 INFO L93 Difference]: Finished difference Result 3096 states and 11479 transitions. [2022-01-28 14:37:00,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:00,169 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:00,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:00,177 INFO L225 Difference]: With dead ends: 3096 [2022-01-28 14:37:00,178 INFO L226 Difference]: Without dead ends: 2907 [2022-01-28 14:37:00,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:00,178 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 94 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:00,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 152 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:00,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2907 states. [2022-01-28 14:37:00,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2907 to 1448. [2022-01-28 14:37:00,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1447 states have (on average 3.9550794747753972) internal successors, (5723), 1447 states have internal predecessors, (5723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:00,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 5723 transitions. [2022-01-28 14:37:00,211 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 5723 transitions. Word has length 25 [2022-01-28 14:37:00,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:00,212 INFO L470 AbstractCegarLoop]: Abstraction has 1448 states and 5723 transitions. [2022-01-28 14:37:00,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:00,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 5723 transitions. [2022-01-28 14:37:00,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:00,214 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:00,214 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:00,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable347 [2022-01-28 14:37:00,214 INFO L402 AbstractCegarLoop]: === Iteration 349 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:00,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:00,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1020335091, now seen corresponding path program 344 times [2022-01-28 14:37:00,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:00,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502459921] [2022-01-28 14:37:00,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:00,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:00,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:00,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:00,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:00,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502459921] [2022-01-28 14:37:00,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502459921] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:00,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:00,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:00,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173038373] [2022-01-28 14:37:00,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:00,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:00,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:00,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:00,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:00,291 INFO L87 Difference]: Start difference. First operand 1448 states and 5723 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:00,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:00,371 INFO L93 Difference]: Finished difference Result 3090 states and 11434 transitions. [2022-01-28 14:37:00,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:00,371 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:00,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:00,378 INFO L225 Difference]: With dead ends: 3090 [2022-01-28 14:37:00,378 INFO L226 Difference]: Without dead ends: 2879 [2022-01-28 14:37:00,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:00,378 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 123 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:00,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 128 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:00,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2879 states. [2022-01-28 14:37:00,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2879 to 1420. [2022-01-28 14:37:00,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 1419 states have (on average 3.9612403100775193) internal successors, (5621), 1419 states have internal predecessors, (5621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:00,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 5621 transitions. [2022-01-28 14:37:00,408 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 5621 transitions. Word has length 25 [2022-01-28 14:37:00,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:00,408 INFO L470 AbstractCegarLoop]: Abstraction has 1420 states and 5621 transitions. [2022-01-28 14:37:00,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:00,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 5621 transitions. [2022-01-28 14:37:00,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:00,410 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:00,410 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:00,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable348 [2022-01-28 14:37:00,411 INFO L402 AbstractCegarLoop]: === Iteration 350 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:00,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:00,411 INFO L85 PathProgramCache]: Analyzing trace with hash 505592981, now seen corresponding path program 345 times [2022-01-28 14:37:00,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:00,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808025555] [2022-01-28 14:37:00,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:00,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:00,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:00,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:00,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:00,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808025555] [2022-01-28 14:37:00,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808025555] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:00,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:00,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:00,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548985779] [2022-01-28 14:37:00,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:00,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:00,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:00,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:00,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:00,558 INFO L87 Difference]: Start difference. First operand 1420 states and 5621 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:00,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:00,673 INFO L93 Difference]: Finished difference Result 3170 states and 11718 transitions. [2022-01-28 14:37:00,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:00,673 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:00,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:00,679 INFO L225 Difference]: With dead ends: 3170 [2022-01-28 14:37:00,679 INFO L226 Difference]: Without dead ends: 2981 [2022-01-28 14:37:00,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:00,680 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 142 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:00,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 124 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:00,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2022-01-28 14:37:00,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 1483. [2022-01-28 14:37:00,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1483 states, 1482 states have (on average 3.932523616734143) internal successors, (5828), 1482 states have internal predecessors, (5828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:00,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1483 states to 1483 states and 5828 transitions. [2022-01-28 14:37:00,725 INFO L78 Accepts]: Start accepts. Automaton has 1483 states and 5828 transitions. Word has length 25 [2022-01-28 14:37:00,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:00,725 INFO L470 AbstractCegarLoop]: Abstraction has 1483 states and 5828 transitions. [2022-01-28 14:37:00,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:00,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1483 states and 5828 transitions. [2022-01-28 14:37:00,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:00,727 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:00,727 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:00,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable349 [2022-01-28 14:37:00,727 INFO L402 AbstractCegarLoop]: === Iteration 351 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:00,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:00,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1237675285, now seen corresponding path program 346 times [2022-01-28 14:37:00,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:00,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176138805] [2022-01-28 14:37:00,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:00,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:00,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:00,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:00,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:00,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176138805] [2022-01-28 14:37:00,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176138805] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:00,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:00,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:00,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809245255] [2022-01-28 14:37:00,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:00,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:00,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:00,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:00,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:00,854 INFO L87 Difference]: Start difference. First operand 1483 states and 5828 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:00,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:00,968 INFO L93 Difference]: Finished difference Result 3203 states and 11801 transitions. [2022-01-28 14:37:00,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:00,968 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:00,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:00,975 INFO L225 Difference]: With dead ends: 3203 [2022-01-28 14:37:00,975 INFO L226 Difference]: Without dead ends: 2918 [2022-01-28 14:37:00,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:00,975 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 117 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:00,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 142 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:00,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2918 states. [2022-01-28 14:37:01,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2918 to 1420. [2022-01-28 14:37:01,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 1419 states have (on average 3.9400986610288937) internal successors, (5591), 1419 states have internal predecessors, (5591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:01,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 5591 transitions. [2022-01-28 14:37:01,006 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 5591 transitions. Word has length 25 [2022-01-28 14:37:01,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:01,006 INFO L470 AbstractCegarLoop]: Abstraction has 1420 states and 5591 transitions. [2022-01-28 14:37:01,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:01,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 5591 transitions. [2022-01-28 14:37:01,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:01,009 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:01,009 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:01,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable350 [2022-01-28 14:37:01,009 INFO L402 AbstractCegarLoop]: === Iteration 352 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:01,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:01,010 INFO L85 PathProgramCache]: Analyzing trace with hash 869850355, now seen corresponding path program 347 times [2022-01-28 14:37:01,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:01,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242857340] [2022-01-28 14:37:01,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:01,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:01,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:01,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:01,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:01,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242857340] [2022-01-28 14:37:01,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242857340] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:01,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:01,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:01,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941532937] [2022-01-28 14:37:01,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:01,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:01,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:01,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:01,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:01,136 INFO L87 Difference]: Start difference. First operand 1420 states and 5591 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:01,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:01,265 INFO L93 Difference]: Finished difference Result 3139 states and 11596 transitions. [2022-01-28 14:37:01,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:01,266 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:01,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:01,273 INFO L225 Difference]: With dead ends: 3139 [2022-01-28 14:37:01,273 INFO L226 Difference]: Without dead ends: 2956 [2022-01-28 14:37:01,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:01,273 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 108 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:01,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 156 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:01,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2022-01-28 14:37:01,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 1464. [2022-01-28 14:37:01,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1463 states have (on average 3.9254955570745045) internal successors, (5743), 1463 states have internal predecessors, (5743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:01,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 5743 transitions. [2022-01-28 14:37:01,309 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 5743 transitions. Word has length 25 [2022-01-28 14:37:01,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:01,309 INFO L470 AbstractCegarLoop]: Abstraction has 1464 states and 5743 transitions. [2022-01-28 14:37:01,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:01,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 5743 transitions. [2022-01-28 14:37:01,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:01,312 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:01,312 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:01,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable351 [2022-01-28 14:37:01,312 INFO L402 AbstractCegarLoop]: === Iteration 353 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:01,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:01,312 INFO L85 PathProgramCache]: Analyzing trace with hash -199668651, now seen corresponding path program 348 times [2022-01-28 14:37:01,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:01,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148509692] [2022-01-28 14:37:01,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:01,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:01,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:01,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:01,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:01,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148509692] [2022-01-28 14:37:01,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148509692] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:01,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:01,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:01,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399123309] [2022-01-28 14:37:01,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:01,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:01,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:01,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:01,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:01,391 INFO L87 Difference]: Start difference. First operand 1464 states and 5743 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:01,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:01,513 INFO L93 Difference]: Finished difference Result 3178 states and 11699 transitions. [2022-01-28 14:37:01,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:01,514 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:01,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:01,520 INFO L225 Difference]: With dead ends: 3178 [2022-01-28 14:37:01,520 INFO L226 Difference]: Without dead ends: 2882 [2022-01-28 14:37:01,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:01,521 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 116 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:01,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 150 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:01,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2022-01-28 14:37:01,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 1390. [2022-01-28 14:37:01,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1390 states, 1389 states have (on average 3.9539236861051115) internal successors, (5492), 1389 states have internal predecessors, (5492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:01,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 5492 transitions. [2022-01-28 14:37:01,547 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 5492 transitions. Word has length 25 [2022-01-28 14:37:01,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:01,547 INFO L470 AbstractCegarLoop]: Abstraction has 1390 states and 5492 transitions. [2022-01-28 14:37:01,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:01,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 5492 transitions. [2022-01-28 14:37:01,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:01,549 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:01,549 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:01,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable352 [2022-01-28 14:37:01,550 INFO L402 AbstractCegarLoop]: === Iteration 354 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:01,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:01,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1555731571, now seen corresponding path program 349 times [2022-01-28 14:37:01,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:01,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521574344] [2022-01-28 14:37:01,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:01,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:01,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:01,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:01,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:01,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521574344] [2022-01-28 14:37:01,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521574344] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:01,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:01,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:01,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063306977] [2022-01-28 14:37:01,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:01,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:01,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:01,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:01,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:01,686 INFO L87 Difference]: Start difference. First operand 1390 states and 5492 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:01,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:01,821 INFO L93 Difference]: Finished difference Result 3038 states and 11232 transitions. [2022-01-28 14:37:01,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:01,822 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:01,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:01,830 INFO L225 Difference]: With dead ends: 3038 [2022-01-28 14:37:01,830 INFO L226 Difference]: Without dead ends: 2849 [2022-01-28 14:37:01,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:01,831 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 130 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:01,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 129 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:01,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2849 states. [2022-01-28 14:37:01,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2849 to 1442. [2022-01-28 14:37:01,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1442 states, 1441 states have (on average 3.947258848022207) internal successors, (5688), 1441 states have internal predecessors, (5688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:01,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1442 states to 1442 states and 5688 transitions. [2022-01-28 14:37:01,871 INFO L78 Accepts]: Start accepts. Automaton has 1442 states and 5688 transitions. Word has length 25 [2022-01-28 14:37:01,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:01,871 INFO L470 AbstractCegarLoop]: Abstraction has 1442 states and 5688 transitions. [2022-01-28 14:37:01,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:01,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1442 states and 5688 transitions. [2022-01-28 14:37:01,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:01,874 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:01,874 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:01,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable353 [2022-01-28 14:37:01,874 INFO L402 AbstractCegarLoop]: === Iteration 355 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:01,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:01,874 INFO L85 PathProgramCache]: Analyzing trace with hash -895576845, now seen corresponding path program 350 times [2022-01-28 14:37:01,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:01,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151150586] [2022-01-28 14:37:01,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:01,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:01,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:02,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:02,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:02,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151150586] [2022-01-28 14:37:02,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151150586] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:02,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:02,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:02,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377978803] [2022-01-28 14:37:02,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:02,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:02,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:02,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:02,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:02,056 INFO L87 Difference]: Start difference. First operand 1442 states and 5688 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:02,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:02,182 INFO L93 Difference]: Finished difference Result 3024 states and 11163 transitions. [2022-01-28 14:37:02,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:02,182 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:02,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:02,189 INFO L225 Difference]: With dead ends: 3024 [2022-01-28 14:37:02,189 INFO L226 Difference]: Without dead ends: 2825 [2022-01-28 14:37:02,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:02,190 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 111 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:02,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 145 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:02,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2825 states. [2022-01-28 14:37:02,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2825 to 1418. [2022-01-28 14:37:02,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1418 states, 1417 states have (on average 3.952011291460833) internal successors, (5600), 1417 states have internal predecessors, (5600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:02,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 5600 transitions. [2022-01-28 14:37:02,218 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 5600 transitions. Word has length 25 [2022-01-28 14:37:02,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:02,218 INFO L470 AbstractCegarLoop]: Abstraction has 1418 states and 5600 transitions. [2022-01-28 14:37:02,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:02,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 5600 transitions. [2022-01-28 14:37:02,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:02,221 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:02,221 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:02,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable354 [2022-01-28 14:37:02,221 INFO L402 AbstractCegarLoop]: === Iteration 356 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:02,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:02,221 INFO L85 PathProgramCache]: Analyzing trace with hash 938208213, now seen corresponding path program 351 times [2022-01-28 14:37:02,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:02,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016744717] [2022-01-28 14:37:02,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:02,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:02,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:02,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:02,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016744717] [2022-01-28 14:37:02,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016744717] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:02,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:02,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:02,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345549913] [2022-01-28 14:37:02,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:02,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:02,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:02,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:02,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:02,330 INFO L87 Difference]: Start difference. First operand 1418 states and 5600 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:02,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:02,440 INFO L93 Difference]: Finished difference Result 3061 states and 11279 transitions. [2022-01-28 14:37:02,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:02,440 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:02,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:02,446 INFO L225 Difference]: With dead ends: 3061 [2022-01-28 14:37:02,446 INFO L226 Difference]: Without dead ends: 2872 [2022-01-28 14:37:02,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:02,447 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 98 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:02,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 169 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:02,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2872 states. [2022-01-28 14:37:02,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2872 to 1481. [2022-01-28 14:37:02,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1481 states, 1480 states have (on average 3.9236486486486486) internal successors, (5807), 1480 states have internal predecessors, (5807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:02,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 5807 transitions. [2022-01-28 14:37:02,493 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 5807 transitions. Word has length 25 [2022-01-28 14:37:02,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:02,493 INFO L470 AbstractCegarLoop]: Abstraction has 1481 states and 5807 transitions. [2022-01-28 14:37:02,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:02,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 5807 transitions. [2022-01-28 14:37:02,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:02,496 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:02,496 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:02,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable355 [2022-01-28 14:37:02,496 INFO L402 AbstractCegarLoop]: === Iteration 357 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:02,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:02,496 INFO L85 PathProgramCache]: Analyzing trace with hash -785386253, now seen corresponding path program 352 times [2022-01-28 14:37:02,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:02,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20606972] [2022-01-28 14:37:02,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:02,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:02,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:02,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:02,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:02,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20606972] [2022-01-28 14:37:02,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20606972] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:02,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:02,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:02,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604700860] [2022-01-28 14:37:02,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:02,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:02,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:02,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:02,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:02,583 INFO L87 Difference]: Start difference. First operand 1481 states and 5807 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:02,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:02,668 INFO L93 Difference]: Finished difference Result 3094 states and 11362 transitions. [2022-01-28 14:37:02,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:02,668 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:02,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:02,675 INFO L225 Difference]: With dead ends: 3094 [2022-01-28 14:37:02,675 INFO L226 Difference]: Without dead ends: 2809 [2022-01-28 14:37:02,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:02,675 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 110 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:02,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 140 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:02,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2809 states. [2022-01-28 14:37:02,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2809 to 1418. [2022-01-28 14:37:02,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1418 states, 1417 states have (on average 3.9322512350035286) internal successors, (5572), 1417 states have internal predecessors, (5572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:02,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 5572 transitions. [2022-01-28 14:37:02,705 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 5572 transitions. Word has length 25 [2022-01-28 14:37:02,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:02,705 INFO L470 AbstractCegarLoop]: Abstraction has 1418 states and 5572 transitions. [2022-01-28 14:37:02,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:02,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 5572 transitions. [2022-01-28 14:37:02,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:02,707 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:02,707 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:02,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable356 [2022-01-28 14:37:02,707 INFO L402 AbstractCegarLoop]: === Iteration 358 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:02,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:02,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1739119245, now seen corresponding path program 353 times [2022-01-28 14:37:02,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:02,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444451830] [2022-01-28 14:37:02,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:02,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:02,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:02,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:02,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:02,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444451830] [2022-01-28 14:37:02,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444451830] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:02,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:02,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:02,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362975839] [2022-01-28 14:37:02,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:02,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:02,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:02,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:02,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:02,797 INFO L87 Difference]: Start difference. First operand 1418 states and 5572 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:02,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:02,880 INFO L93 Difference]: Finished difference Result 3010 states and 11087 transitions. [2022-01-28 14:37:02,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:02,880 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:02,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:02,887 INFO L225 Difference]: With dead ends: 3010 [2022-01-28 14:37:02,887 INFO L226 Difference]: Without dead ends: 2835 [2022-01-28 14:37:02,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:02,887 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 111 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:02,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 144 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:02,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2835 states. [2022-01-28 14:37:02,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 1458. [2022-01-28 14:37:02,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 1457 states have (on average 3.9203843514070007) internal successors, (5712), 1457 states have internal predecessors, (5712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:02,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 5712 transitions. [2022-01-28 14:37:02,916 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 5712 transitions. Word has length 25 [2022-01-28 14:37:02,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:02,916 INFO L470 AbstractCegarLoop]: Abstraction has 1458 states and 5712 transitions. [2022-01-28 14:37:02,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:02,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 5712 transitions. [2022-01-28 14:37:02,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:02,919 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:02,919 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:02,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable357 [2022-01-28 14:37:02,919 INFO L402 AbstractCegarLoop]: === Iteration 359 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:02,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:02,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1520767659, now seen corresponding path program 354 times [2022-01-28 14:37:02,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:02,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023248379] [2022-01-28 14:37:02,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:02,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:02,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:03,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:03,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:03,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023248379] [2022-01-28 14:37:03,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023248379] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:03,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:03,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:03,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658827342] [2022-01-28 14:37:03,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:03,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:03,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:03,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:03,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:03,003 INFO L87 Difference]: Start difference. First operand 1458 states and 5712 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:03,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:03,111 INFO L93 Difference]: Finished difference Result 2962 states and 10887 transitions. [2022-01-28 14:37:03,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:03,111 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:03,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:03,117 INFO L225 Difference]: With dead ends: 2962 [2022-01-28 14:37:03,117 INFO L226 Difference]: Without dead ends: 2672 [2022-01-28 14:37:03,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:03,117 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 95 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:03,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 155 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:03,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2672 states. [2022-01-28 14:37:03,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2672 to 1390. [2022-01-28 14:37:03,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1390 states, 1389 states have (on average 3.9438444924406046) internal successors, (5478), 1389 states have internal predecessors, (5478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:03,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 5478 transitions. [2022-01-28 14:37:03,143 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 5478 transitions. Word has length 25 [2022-01-28 14:37:03,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:03,143 INFO L470 AbstractCegarLoop]: Abstraction has 1390 states and 5478 transitions. [2022-01-28 14:37:03,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:03,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 5478 transitions. [2022-01-28 14:37:03,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:03,145 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:03,145 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:03,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable358 [2022-01-28 14:37:03,145 INFO L402 AbstractCegarLoop]: === Iteration 360 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:03,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:03,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1900086737, now seen corresponding path program 355 times [2022-01-28 14:37:03,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:03,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478985121] [2022-01-28 14:37:03,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:03,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:03,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:03,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:03,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478985121] [2022-01-28 14:37:03,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478985121] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:03,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:03,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:03,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352683044] [2022-01-28 14:37:03,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:03,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:03,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:03,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:03,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:03,263 INFO L87 Difference]: Start difference. First operand 1390 states and 5478 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:03,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:03,363 INFO L93 Difference]: Finished difference Result 2993 states and 11081 transitions. [2022-01-28 14:37:03,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:03,364 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:03,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:03,370 INFO L225 Difference]: With dead ends: 2993 [2022-01-28 14:37:03,370 INFO L226 Difference]: Without dead ends: 2810 [2022-01-28 14:37:03,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:03,370 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 122 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:03,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 134 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:03,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2810 states. [2022-01-28 14:37:03,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2810 to 1434. [2022-01-28 14:37:03,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1434 states, 1433 states have (on average 3.939986043265876) internal successors, (5646), 1433 states have internal predecessors, (5646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:03,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1434 states to 1434 states and 5646 transitions. [2022-01-28 14:37:03,397 INFO L78 Accepts]: Start accepts. Automaton has 1434 states and 5646 transitions. Word has length 25 [2022-01-28 14:37:03,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:03,397 INFO L470 AbstractCegarLoop]: Abstraction has 1434 states and 5646 transitions. [2022-01-28 14:37:03,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:03,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1434 states and 5646 transitions. [2022-01-28 14:37:03,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:03,399 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:03,399 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:03,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable359 [2022-01-28 14:37:03,399 INFO L402 AbstractCegarLoop]: === Iteration 361 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:03,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:03,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1313817933, now seen corresponding path program 356 times [2022-01-28 14:37:03,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:03,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825572361] [2022-01-28 14:37:03,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:03,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:03,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:03,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:03,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:03,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825572361] [2022-01-28 14:37:03,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825572361] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:03,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:03,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:03,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106636138] [2022-01-28 14:37:03,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:03,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:03,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:03,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:03,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:03,508 INFO L87 Difference]: Start difference. First operand 1434 states and 5646 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:03,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:03,621 INFO L93 Difference]: Finished difference Result 2985 states and 11029 transitions. [2022-01-28 14:37:03,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:03,622 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:03,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:03,628 INFO L225 Difference]: With dead ends: 2985 [2022-01-28 14:37:03,628 INFO L226 Difference]: Without dead ends: 2786 [2022-01-28 14:37:03,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:03,629 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 106 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:03,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 148 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:03,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2022-01-28 14:37:03,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 1410. [2022-01-28 14:37:03,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1410 states, 1409 states have (on average 3.944641589779986) internal successors, (5558), 1409 states have internal predecessors, (5558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:03,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 5558 transitions. [2022-01-28 14:37:03,657 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 5558 transitions. Word has length 25 [2022-01-28 14:37:03,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:03,657 INFO L470 AbstractCegarLoop]: Abstraction has 1410 states and 5558 transitions. [2022-01-28 14:37:03,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:03,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 5558 transitions. [2022-01-28 14:37:03,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:03,659 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:03,659 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:03,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable360 [2022-01-28 14:37:03,659 INFO L402 AbstractCegarLoop]: === Iteration 362 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:03,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:03,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1282563379, now seen corresponding path program 357 times [2022-01-28 14:37:03,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:03,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187330153] [2022-01-28 14:37:03,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:03,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:03,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:03,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:03,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:03,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187330153] [2022-01-28 14:37:03,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187330153] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:03,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:03,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:03,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579770479] [2022-01-28 14:37:03,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:03,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:03,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:03,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:03,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:03,784 INFO L87 Difference]: Start difference. First operand 1410 states and 5558 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:03,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:03,905 INFO L93 Difference]: Finished difference Result 2921 states and 10793 transitions. [2022-01-28 14:37:03,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:03,905 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:03,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:03,911 INFO L225 Difference]: With dead ends: 2921 [2022-01-28 14:37:03,911 INFO L226 Difference]: Without dead ends: 2738 [2022-01-28 14:37:03,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:03,911 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 106 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:03,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 151 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:03,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2738 states. [2022-01-28 14:37:03,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2738 to 1454. [2022-01-28 14:37:03,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1454 states, 1453 states have (on average 3.9298004129387474) internal successors, (5710), 1453 states have internal predecessors, (5710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:03,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 5710 transitions. [2022-01-28 14:37:03,937 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 5710 transitions. Word has length 25 [2022-01-28 14:37:03,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:03,937 INFO L470 AbstractCegarLoop]: Abstraction has 1454 states and 5710 transitions. [2022-01-28 14:37:03,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:03,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 5710 transitions. [2022-01-28 14:37:03,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:03,939 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:03,939 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:03,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable361 [2022-01-28 14:37:03,939 INFO L402 AbstractCegarLoop]: === Iteration 363 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:03,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:03,940 INFO L85 PathProgramCache]: Analyzing trace with hash 2052334899, now seen corresponding path program 358 times [2022-01-28 14:37:03,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:03,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334163717] [2022-01-28 14:37:03,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:03,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:03,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:04,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:04,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:04,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334163717] [2022-01-28 14:37:04,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334163717] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:04,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:04,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:04,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815465466] [2022-01-28 14:37:04,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:04,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:04,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:04,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:04,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:04,070 INFO L87 Difference]: Start difference. First operand 1454 states and 5710 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:04,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:04,174 INFO L93 Difference]: Finished difference Result 2960 states and 10896 transitions. [2022-01-28 14:37:04,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:04,175 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:04,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:04,181 INFO L225 Difference]: With dead ends: 2960 [2022-01-28 14:37:04,181 INFO L226 Difference]: Without dead ends: 2694 [2022-01-28 14:37:04,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:04,182 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 109 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:04,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 138 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:04,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2694 states. [2022-01-28 14:37:04,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2694 to 1410. [2022-01-28 14:37:04,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1410 states, 1409 states have (on average 3.930447125621008) internal successors, (5538), 1409 states have internal predecessors, (5538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:04,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 5538 transitions. [2022-01-28 14:37:04,211 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 5538 transitions. Word has length 25 [2022-01-28 14:37:04,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:04,211 INFO L470 AbstractCegarLoop]: Abstraction has 1410 states and 5538 transitions. [2022-01-28 14:37:04,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:04,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 5538 transitions. [2022-01-28 14:37:04,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:04,214 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:04,214 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:04,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable362 [2022-01-28 14:37:04,214 INFO L402 AbstractCegarLoop]: === Iteration 364 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:04,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:04,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1670568341, now seen corresponding path program 359 times [2022-01-28 14:37:04,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:04,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086587647] [2022-01-28 14:37:04,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:04,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:04,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:04,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:04,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:04,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086587647] [2022-01-28 14:37:04,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086587647] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:04,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:04,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:04,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755826817] [2022-01-28 14:37:04,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:04,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:04,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:04,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:04,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:04,315 INFO L87 Difference]: Start difference. First operand 1410 states and 5538 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:04,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:04,415 INFO L93 Difference]: Finished difference Result 2861 states and 10537 transitions. [2022-01-28 14:37:04,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:04,416 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:04,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:04,421 INFO L225 Difference]: With dead ends: 2861 [2022-01-28 14:37:04,421 INFO L226 Difference]: Without dead ends: 2686 [2022-01-28 14:37:04,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:04,421 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 99 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:04,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 148 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:04,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2022-01-28 14:37:04,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 1450. [2022-01-28 14:37:04,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1450 states, 1449 states have (on average 3.9185645272601795) internal successors, (5678), 1449 states have internal predecessors, (5678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:04,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 5678 transitions. [2022-01-28 14:37:04,447 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 5678 transitions. Word has length 25 [2022-01-28 14:37:04,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:04,447 INFO L470 AbstractCegarLoop]: Abstraction has 1450 states and 5678 transitions. [2022-01-28 14:37:04,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:04,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 5678 transitions. [2022-01-28 14:37:04,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:04,449 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:04,449 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:04,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable363 [2022-01-28 14:37:04,449 INFO L402 AbstractCegarLoop]: === Iteration 365 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:04,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:04,449 INFO L85 PathProgramCache]: Analyzing trace with hash -150467085, now seen corresponding path program 360 times [2022-01-28 14:37:04,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:04,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198618527] [2022-01-28 14:37:04,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:04,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:04,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:04,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:04,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:04,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198618527] [2022-01-28 14:37:04,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198618527] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:04,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:04,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:04,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880392672] [2022-01-28 14:37:04,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:04,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:04,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:04,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:04,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:04,569 INFO L87 Difference]: Start difference. First operand 1450 states and 5678 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:04,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:04,675 INFO L93 Difference]: Finished difference Result 2813 states and 10337 transitions. [2022-01-28 14:37:04,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:04,676 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:04,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:04,681 INFO L225 Difference]: With dead ends: 2813 [2022-01-28 14:37:04,681 INFO L226 Difference]: Without dead ends: 2511 [2022-01-28 14:37:04,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:04,681 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 94 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:04,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 140 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:04,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2022-01-28 14:37:04,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 1370. [2022-01-28 14:37:04,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1369 states have (on average 3.9656683710737766) internal successors, (5429), 1369 states have internal predecessors, (5429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:04,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 5429 transitions. [2022-01-28 14:37:04,705 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 5429 transitions. Word has length 25 [2022-01-28 14:37:04,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:04,705 INFO L470 AbstractCegarLoop]: Abstraction has 1370 states and 5429 transitions. [2022-01-28 14:37:04,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:04,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 5429 transitions. [2022-01-28 14:37:04,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:04,707 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:04,707 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:04,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable364 [2022-01-28 14:37:04,707 INFO L402 AbstractCegarLoop]: === Iteration 366 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:04,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:04,708 INFO L85 PathProgramCache]: Analyzing trace with hash -789015661, now seen corresponding path program 361 times [2022-01-28 14:37:04,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:04,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201353327] [2022-01-28 14:37:04,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:04,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:04,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:04,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:04,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:04,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201353327] [2022-01-28 14:37:04,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201353327] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:04,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:04,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:04,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193426091] [2022-01-28 14:37:04,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:04,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:04,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:04,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:04,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:04,825 INFO L87 Difference]: Start difference. First operand 1370 states and 5429 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:04,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:04,931 INFO L93 Difference]: Finished difference Result 2920 states and 10769 transitions. [2022-01-28 14:37:04,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:04,932 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:04,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:04,937 INFO L225 Difference]: With dead ends: 2920 [2022-01-28 14:37:04,937 INFO L226 Difference]: Without dead ends: 2761 [2022-01-28 14:37:04,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:04,938 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 103 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:04,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 169 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:04,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2761 states. [2022-01-28 14:37:04,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2761 to 1418. [2022-01-28 14:37:04,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1418 states, 1417 states have (on average 3.961185603387438) internal successors, (5613), 1417 states have internal predecessors, (5613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:04,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 5613 transitions. [2022-01-28 14:37:04,964 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 5613 transitions. Word has length 25 [2022-01-28 14:37:04,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:04,964 INFO L470 AbstractCegarLoop]: Abstraction has 1418 states and 5613 transitions. [2022-01-28 14:37:04,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:04,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 5613 transitions. [2022-01-28 14:37:04,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:04,966 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:04,966 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:04,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable365 [2022-01-28 14:37:04,966 INFO L402 AbstractCegarLoop]: === Iteration 367 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:04,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:04,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1797313645, now seen corresponding path program 362 times [2022-01-28 14:37:04,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:04,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26292655] [2022-01-28 14:37:04,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:04,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:04,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:05,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:05,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:05,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26292655] [2022-01-28 14:37:05,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26292655] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:05,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:05,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:05,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004360680] [2022-01-28 14:37:05,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:05,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:05,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:05,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:05,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:05,053 INFO L87 Difference]: Start difference. First operand 1418 states and 5613 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:05,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:05,127 INFO L93 Difference]: Finished difference Result 2983 states and 10976 transitions. [2022-01-28 14:37:05,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:05,127 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:05,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:05,133 INFO L225 Difference]: With dead ends: 2983 [2022-01-28 14:37:05,133 INFO L226 Difference]: Without dead ends: 2729 [2022-01-28 14:37:05,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:05,133 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 108 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:05,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 156 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:05,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2729 states. [2022-01-28 14:37:05,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2729 to 1386. [2022-01-28 14:37:05,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1386 states, 1385 states have (on average 3.96028880866426) internal successors, (5485), 1385 states have internal predecessors, (5485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:05,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 5485 transitions. [2022-01-28 14:37:05,158 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 5485 transitions. Word has length 25 [2022-01-28 14:37:05,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:05,158 INFO L470 AbstractCegarLoop]: Abstraction has 1386 states and 5485 transitions. [2022-01-28 14:37:05,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:05,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 5485 transitions. [2022-01-28 14:37:05,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:05,160 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:05,160 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:05,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable366 [2022-01-28 14:37:05,161 INFO L402 AbstractCegarLoop]: === Iteration 368 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:05,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:05,161 INFO L85 PathProgramCache]: Analyzing trace with hash 200017845, now seen corresponding path program 363 times [2022-01-28 14:37:05,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:05,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722004441] [2022-01-28 14:37:05,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:05,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:05,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:05,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:05,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:05,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722004441] [2022-01-28 14:37:05,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722004441] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:05,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:05,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:05,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426958161] [2022-01-28 14:37:05,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:05,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:05,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:05,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:05,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:05,286 INFO L87 Difference]: Start difference. First operand 1386 states and 5485 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:05,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:05,399 INFO L93 Difference]: Finished difference Result 2869 states and 10570 transitions. [2022-01-28 14:37:05,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:05,399 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:05,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:05,405 INFO L225 Difference]: With dead ends: 2869 [2022-01-28 14:37:05,406 INFO L226 Difference]: Without dead ends: 2710 [2022-01-28 14:37:05,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:05,406 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 105 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:05,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 162 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:05,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2710 states. [2022-01-28 14:37:05,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2710 to 1402. [2022-01-28 14:37:05,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1402 states, 1401 states have (on average 3.9493219129193435) internal successors, (5533), 1401 states have internal predecessors, (5533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:05,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 5533 transitions. [2022-01-28 14:37:05,431 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 5533 transitions. Word has length 25 [2022-01-28 14:37:05,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:05,431 INFO L470 AbstractCegarLoop]: Abstraction has 1402 states and 5533 transitions. [2022-01-28 14:37:05,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:05,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 5533 transitions. [2022-01-28 14:37:05,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:05,433 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:05,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:05,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable367 [2022-01-28 14:37:05,433 INFO L402 AbstractCegarLoop]: === Iteration 369 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:05,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:05,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1208315829, now seen corresponding path program 364 times [2022-01-28 14:37:05,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:05,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658545162] [2022-01-28 14:37:05,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:05,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:05,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:05,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:05,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:05,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658545162] [2022-01-28 14:37:05,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658545162] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:05,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:05,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:05,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892540661] [2022-01-28 14:37:05,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:05,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:05,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:05,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:05,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:05,563 INFO L87 Difference]: Start difference. First operand 1402 states and 5533 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:05,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:05,682 INFO L93 Difference]: Finished difference Result 2897 states and 10658 transitions. [2022-01-28 14:37:05,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:05,683 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:05,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:05,690 INFO L225 Difference]: With dead ends: 2897 [2022-01-28 14:37:05,690 INFO L226 Difference]: Without dead ends: 2694 [2022-01-28 14:37:05,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:05,690 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 113 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:05,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 143 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:05,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2694 states. [2022-01-28 14:37:05,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2694 to 1386. [2022-01-28 14:37:05,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1386 states, 1385 states have (on average 3.954512635379061) internal successors, (5477), 1385 states have internal predecessors, (5477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:05,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 5477 transitions. [2022-01-28 14:37:05,716 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 5477 transitions. Word has length 25 [2022-01-28 14:37:05,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:05,717 INFO L470 AbstractCegarLoop]: Abstraction has 1386 states and 5477 transitions. [2022-01-28 14:37:05,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:05,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 5477 transitions. [2022-01-28 14:37:05,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:05,718 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:05,719 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:05,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable368 [2022-01-28 14:37:05,719 INFO L402 AbstractCegarLoop]: === Iteration 370 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:05,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:05,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1398405195, now seen corresponding path program 365 times [2022-01-28 14:37:05,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:05,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538335652] [2022-01-28 14:37:05,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:05,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:05,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:05,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:05,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:05,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538335652] [2022-01-28 14:37:05,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538335652] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:05,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:05,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:05,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054687747] [2022-01-28 14:37:05,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:05,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:05,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:05,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:05,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:05,826 INFO L87 Difference]: Start difference. First operand 1386 states and 5477 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:05,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:05,920 INFO L93 Difference]: Finished difference Result 2990 states and 11012 transitions. [2022-01-28 14:37:05,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:05,920 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:05,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:05,926 INFO L225 Difference]: With dead ends: 2990 [2022-01-28 14:37:05,926 INFO L226 Difference]: Without dead ends: 2803 [2022-01-28 14:37:05,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:05,926 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 119 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:05,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 139 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:05,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2803 states. [2022-01-28 14:37:05,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2803 to 1432. [2022-01-28 14:37:05,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1431 states have (on average 3.9371069182389937) internal successors, (5634), 1431 states have internal predecessors, (5634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:05,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 5634 transitions. [2022-01-28 14:37:05,952 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 5634 transitions. Word has length 25 [2022-01-28 14:37:05,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:05,952 INFO L470 AbstractCegarLoop]: Abstraction has 1432 states and 5634 transitions. [2022-01-28 14:37:05,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:05,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 5634 transitions. [2022-01-28 14:37:05,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:05,954 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:05,954 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:05,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable369 [2022-01-28 14:37:05,954 INFO L402 AbstractCegarLoop]: === Iteration 371 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:05,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:05,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1751544685, now seen corresponding path program 366 times [2022-01-28 14:37:05,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:05,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039902106] [2022-01-28 14:37:05,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:05,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:05,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:06,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:06,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:06,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039902106] [2022-01-28 14:37:06,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039902106] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:06,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:06,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:06,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45002216] [2022-01-28 14:37:06,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:06,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:06,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:06,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:06,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:06,056 INFO L87 Difference]: Start difference. First operand 1432 states and 5634 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:06,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:06,146 INFO L93 Difference]: Finished difference Result 3025 states and 11101 transitions. [2022-01-28 14:37:06,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:06,146 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:06,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:06,153 INFO L225 Difference]: With dead ends: 3025 [2022-01-28 14:37:06,153 INFO L226 Difference]: Without dead ends: 2741 [2022-01-28 14:37:06,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:06,153 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 117 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:06,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 144 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:06,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2741 states. [2022-01-28 14:37:06,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2741 to 1370. [2022-01-28 14:37:06,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1369 states have (on average 3.959824689554419) internal successors, (5421), 1369 states have internal predecessors, (5421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:06,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 5421 transitions. [2022-01-28 14:37:06,179 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 5421 transitions. Word has length 25 [2022-01-28 14:37:06,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:06,179 INFO L470 AbstractCegarLoop]: Abstraction has 1370 states and 5421 transitions. [2022-01-28 14:37:06,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:06,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 5421 transitions. [2022-01-28 14:37:06,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:06,182 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:06,182 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:06,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable370 [2022-01-28 14:37:06,182 INFO L402 AbstractCegarLoop]: === Iteration 372 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:06,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:06,182 INFO L85 PathProgramCache]: Analyzing trace with hash 920586101, now seen corresponding path program 367 times [2022-01-28 14:37:06,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:06,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824179729] [2022-01-28 14:37:06,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:06,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:06,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:06,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:06,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824179729] [2022-01-28 14:37:06,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824179729] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:06,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:06,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:06,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689844103] [2022-01-28 14:37:06,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:06,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:06,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:06,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:06,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:06,306 INFO L87 Difference]: Start difference. First operand 1370 states and 5421 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:06,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:06,383 INFO L93 Difference]: Finished difference Result 2914 states and 10742 transitions. [2022-01-28 14:37:06,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:06,384 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:06,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:06,390 INFO L225 Difference]: With dead ends: 2914 [2022-01-28 14:37:06,390 INFO L226 Difference]: Without dead ends: 2755 [2022-01-28 14:37:06,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:06,391 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 121 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:06,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 139 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:06,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2755 states. [2022-01-28 14:37:06,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2755 to 1418. [2022-01-28 14:37:06,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1418 states, 1417 states have (on average 3.9555398729710656) internal successors, (5605), 1417 states have internal predecessors, (5605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:06,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 5605 transitions. [2022-01-28 14:37:06,419 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 5605 transitions. Word has length 25 [2022-01-28 14:37:06,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:06,420 INFO L470 AbstractCegarLoop]: Abstraction has 1418 states and 5605 transitions. [2022-01-28 14:37:06,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:06,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 5605 transitions. [2022-01-28 14:37:06,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:06,422 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:06,422 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:06,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable371 [2022-01-28 14:37:06,422 INFO L402 AbstractCegarLoop]: === Iteration 373 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:06,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:06,422 INFO L85 PathProgramCache]: Analyzing trace with hash -87711883, now seen corresponding path program 368 times [2022-01-28 14:37:06,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:06,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10462115] [2022-01-28 14:37:06,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:06,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:06,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:06,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:06,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:06,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10462115] [2022-01-28 14:37:06,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10462115] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:06,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:06,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:06,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5499011] [2022-01-28 14:37:06,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:06,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:06,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:06,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:06,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:06,501 INFO L87 Difference]: Start difference. First operand 1418 states and 5605 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:06,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:06,605 INFO L93 Difference]: Finished difference Result 2977 states and 10949 transitions. [2022-01-28 14:37:06,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:06,606 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:06,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:06,612 INFO L225 Difference]: With dead ends: 2977 [2022-01-28 14:37:06,612 INFO L226 Difference]: Without dead ends: 2723 [2022-01-28 14:37:06,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:06,612 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 104 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:06,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 160 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:06,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2723 states. [2022-01-28 14:37:06,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2723 to 1386. [2022-01-28 14:37:06,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1386 states, 1385 states have (on average 3.954512635379061) internal successors, (5477), 1385 states have internal predecessors, (5477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:06,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 5477 transitions. [2022-01-28 14:37:06,643 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 5477 transitions. Word has length 25 [2022-01-28 14:37:06,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:06,643 INFO L470 AbstractCegarLoop]: Abstraction has 1386 states and 5477 transitions. [2022-01-28 14:37:06,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:06,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 5477 transitions. [2022-01-28 14:37:06,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:06,645 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:06,645 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:06,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable372 [2022-01-28 14:37:06,645 INFO L402 AbstractCegarLoop]: === Iteration 374 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:06,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:06,646 INFO L85 PathProgramCache]: Analyzing trace with hash 926338869, now seen corresponding path program 369 times [2022-01-28 14:37:06,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:06,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038825481] [2022-01-28 14:37:06,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:06,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:06,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:06,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:06,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:06,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038825481] [2022-01-28 14:37:06,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038825481] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:06,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:06,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:06,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628573351] [2022-01-28 14:37:06,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:06,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:06,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:06,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:06,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:06,760 INFO L87 Difference]: Start difference. First operand 1386 states and 5477 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:06,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:06,865 INFO L93 Difference]: Finished difference Result 2859 states and 10531 transitions. [2022-01-28 14:37:06,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:06,866 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:06,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:06,871 INFO L225 Difference]: With dead ends: 2859 [2022-01-28 14:37:06,872 INFO L226 Difference]: Without dead ends: 2700 [2022-01-28 14:37:06,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:06,872 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 107 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:06,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 147 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:06,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2700 states. [2022-01-28 14:37:06,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2700 to 1402. [2022-01-28 14:37:06,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1402 states, 1401 states have (on average 3.9436117059243396) internal successors, (5525), 1401 states have internal predecessors, (5525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:06,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 5525 transitions. [2022-01-28 14:37:06,901 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 5525 transitions. Word has length 25 [2022-01-28 14:37:06,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:06,901 INFO L470 AbstractCegarLoop]: Abstraction has 1402 states and 5525 transitions. [2022-01-28 14:37:06,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:06,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 5525 transitions. [2022-01-28 14:37:06,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:06,903 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:06,903 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:06,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable373 [2022-01-28 14:37:06,903 INFO L402 AbstractCegarLoop]: === Iteration 375 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:06,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:06,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1688131787, now seen corresponding path program 370 times [2022-01-28 14:37:06,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:06,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669606506] [2022-01-28 14:37:06,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:06,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:06,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:07,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:07,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:07,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669606506] [2022-01-28 14:37:07,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669606506] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:07,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:07,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:07,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967663863] [2022-01-28 14:37:07,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:07,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:07,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:07,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:07,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:07,019 INFO L87 Difference]: Start difference. First operand 1402 states and 5525 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:07,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:07,096 INFO L93 Difference]: Finished difference Result 2883 states and 10607 transitions. [2022-01-28 14:37:07,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:07,096 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:07,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:07,102 INFO L225 Difference]: With dead ends: 2883 [2022-01-28 14:37:07,102 INFO L226 Difference]: Without dead ends: 2684 [2022-01-28 14:37:07,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:07,102 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 114 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:07,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 139 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:07,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2684 states. [2022-01-28 14:37:07,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2684 to 1386. [2022-01-28 14:37:07,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1386 states, 1385 states have (on average 3.948736462093863) internal successors, (5469), 1385 states have internal predecessors, (5469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:07,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 5469 transitions. [2022-01-28 14:37:07,148 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 5469 transitions. Word has length 25 [2022-01-28 14:37:07,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:07,148 INFO L470 AbstractCegarLoop]: Abstraction has 1386 states and 5469 transitions. [2022-01-28 14:37:07,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:07,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 5469 transitions. [2022-01-28 14:37:07,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:07,150 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:07,150 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:07,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable374 [2022-01-28 14:37:07,151 INFO L402 AbstractCegarLoop]: === Iteration 376 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:07,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:07,151 INFO L85 PathProgramCache]: Analyzing trace with hash 114485, now seen corresponding path program 371 times [2022-01-28 14:37:07,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:07,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137341046] [2022-01-28 14:37:07,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:07,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:07,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:07,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:07,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:07,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137341046] [2022-01-28 14:37:07,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137341046] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:07,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:07,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:07,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475089718] [2022-01-28 14:37:07,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:07,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:07,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:07,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:07,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:07,228 INFO L87 Difference]: Start difference. First operand 1386 states and 5469 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:07,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:07,315 INFO L93 Difference]: Finished difference Result 2974 states and 10954 transitions. [2022-01-28 14:37:07,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:07,315 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:07,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:07,322 INFO L225 Difference]: With dead ends: 2974 [2022-01-28 14:37:07,322 INFO L226 Difference]: Without dead ends: 2791 [2022-01-28 14:37:07,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:07,323 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 99 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:07,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 169 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:07,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2791 states. [2022-01-28 14:37:07,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2791 to 1430. [2022-01-28 14:37:07,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1430 states, 1429 states have (on average 3.933519944016795) internal successors, (5621), 1429 states have internal predecessors, (5621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:07,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 5621 transitions. [2022-01-28 14:37:07,353 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 5621 transitions. Word has length 25 [2022-01-28 14:37:07,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:07,353 INFO L470 AbstractCegarLoop]: Abstraction has 1430 states and 5621 transitions. [2022-01-28 14:37:07,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:07,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 5621 transitions. [2022-01-28 14:37:07,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:07,355 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:07,355 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:07,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable375 [2022-01-28 14:37:07,356 INFO L402 AbstractCegarLoop]: === Iteration 377 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:07,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:07,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1004217453, now seen corresponding path program 372 times [2022-01-28 14:37:07,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:07,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744509331] [2022-01-28 14:37:07,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:07,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:07,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:07,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:07,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:07,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744509331] [2022-01-28 14:37:07,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744509331] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:07,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:07,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:07,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837244039] [2022-01-28 14:37:07,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:07,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:07,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:07,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:07,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:07,457 INFO L87 Difference]: Start difference. First operand 1430 states and 5621 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:07,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:07,541 INFO L93 Difference]: Finished difference Result 3013 states and 11057 transitions. [2022-01-28 14:37:07,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:07,541 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:07,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:07,547 INFO L225 Difference]: With dead ends: 3013 [2022-01-28 14:37:07,547 INFO L226 Difference]: Without dead ends: 2731 [2022-01-28 14:37:07,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:07,547 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 107 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:07,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 162 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:07,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2731 states. [2022-01-28 14:37:07,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2731 to 1370. [2022-01-28 14:37:07,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1369 states have (on average 3.953981008035062) internal successors, (5413), 1369 states have internal predecessors, (5413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:07,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 5413 transitions. [2022-01-28 14:37:07,575 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 5413 transitions. Word has length 25 [2022-01-28 14:37:07,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:07,575 INFO L470 AbstractCegarLoop]: Abstraction has 1370 states and 5413 transitions. [2022-01-28 14:37:07,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:07,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 5413 transitions. [2022-01-28 14:37:07,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:07,577 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:07,577 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:07,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable376 [2022-01-28 14:37:07,577 INFO L402 AbstractCegarLoop]: === Iteration 378 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:07,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:07,577 INFO L85 PathProgramCache]: Analyzing trace with hash 461951703, now seen corresponding path program 373 times [2022-01-28 14:37:07,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:07,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925978316] [2022-01-28 14:37:07,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:07,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:07,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:07,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:07,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:07,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925978316] [2022-01-28 14:37:07,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925978316] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:07,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:07,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:07,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390813866] [2022-01-28 14:37:07,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:07,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:07,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:07,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:07,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:07,656 INFO L87 Difference]: Start difference. First operand 1370 states and 5413 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:07,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:07,729 INFO L93 Difference]: Finished difference Result 2788 states and 10268 transitions. [2022-01-28 14:37:07,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:07,729 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:07,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:07,735 INFO L225 Difference]: With dead ends: 2788 [2022-01-28 14:37:07,735 INFO L226 Difference]: Without dead ends: 2629 [2022-01-28 14:37:07,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:07,735 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 99 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:07,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 160 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:07,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2629 states. [2022-01-28 14:37:07,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2629 to 1394. [2022-01-28 14:37:07,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 1393 states have (on average 3.946159368269921) internal successors, (5497), 1393 states have internal predecessors, (5497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:07,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 5497 transitions. [2022-01-28 14:37:07,758 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 5497 transitions. Word has length 25 [2022-01-28 14:37:07,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:07,758 INFO L470 AbstractCegarLoop]: Abstraction has 1394 states and 5497 transitions. [2022-01-28 14:37:07,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:07,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 5497 transitions. [2022-01-28 14:37:07,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:07,760 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:07,760 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:07,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable377 [2022-01-28 14:37:07,761 INFO L402 AbstractCegarLoop]: === Iteration 379 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:07,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:07,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1470249687, now seen corresponding path program 374 times [2022-01-28 14:37:07,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:07,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119521029] [2022-01-28 14:37:07,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:07,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:07,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:07,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:07,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:07,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119521029] [2022-01-28 14:37:07,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119521029] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:07,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:07,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:07,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602551283] [2022-01-28 14:37:07,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:07,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:07,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:07,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:07,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:07,836 INFO L87 Difference]: Start difference. First operand 1394 states and 5497 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:07,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:07,918 INFO L93 Difference]: Finished difference Result 2816 states and 10356 transitions. [2022-01-28 14:37:07,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:07,919 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:07,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:07,925 INFO L225 Difference]: With dead ends: 2816 [2022-01-28 14:37:07,925 INFO L226 Difference]: Without dead ends: 2613 [2022-01-28 14:37:07,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:07,925 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 100 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:07,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 152 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:07,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2613 states. [2022-01-28 14:37:07,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2613 to 1378. [2022-01-28 14:37:07,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 1377 states have (on average 3.9513435003631083) internal successors, (5441), 1377 states have internal predecessors, (5441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:07,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 5441 transitions. [2022-01-28 14:37:07,952 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 5441 transitions. Word has length 25 [2022-01-28 14:37:07,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:07,952 INFO L470 AbstractCegarLoop]: Abstraction has 1378 states and 5441 transitions. [2022-01-28 14:37:07,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:07,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 5441 transitions. [2022-01-28 14:37:07,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:07,954 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:07,954 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:07,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable378 [2022-01-28 14:37:07,954 INFO L402 AbstractCegarLoop]: === Iteration 380 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:07,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:07,954 INFO L85 PathProgramCache]: Analyzing trace with hash -384845259, now seen corresponding path program 375 times [2022-01-28 14:37:07,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:07,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651259894] [2022-01-28 14:37:07,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:07,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:07,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:08,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:08,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:08,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651259894] [2022-01-28 14:37:08,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651259894] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:08,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:08,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:08,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108248923] [2022-01-28 14:37:08,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:08,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:08,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:08,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:08,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:08,039 INFO L87 Difference]: Start difference. First operand 1378 states and 5441 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:08,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:08,125 INFO L93 Difference]: Finished difference Result 2784 states and 10248 transitions. [2022-01-28 14:37:08,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:08,125 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:08,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:08,131 INFO L225 Difference]: With dead ends: 2784 [2022-01-28 14:37:08,131 INFO L226 Difference]: Without dead ends: 2625 [2022-01-28 14:37:08,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:08,131 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 120 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:08,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 138 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:08,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2625 states. [2022-01-28 14:37:08,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2625 to 1394. [2022-01-28 14:37:08,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 1393 states have (on average 3.940416367552046) internal successors, (5489), 1393 states have internal predecessors, (5489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:08,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 5489 transitions. [2022-01-28 14:37:08,157 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 5489 transitions. Word has length 25 [2022-01-28 14:37:08,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:08,157 INFO L470 AbstractCegarLoop]: Abstraction has 1394 states and 5489 transitions. [2022-01-28 14:37:08,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:08,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 5489 transitions. [2022-01-28 14:37:08,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:08,159 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:08,159 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:08,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable379 [2022-01-28 14:37:08,159 INFO L402 AbstractCegarLoop]: === Iteration 381 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:08,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:08,159 INFO L85 PathProgramCache]: Analyzing trace with hash -414704937, now seen corresponding path program 376 times [2022-01-28 14:37:08,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:08,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779452434] [2022-01-28 14:37:08,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:08,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:08,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:08,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:08,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:08,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779452434] [2022-01-28 14:37:08,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779452434] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:08,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:08,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:08,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151209306] [2022-01-28 14:37:08,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:08,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:08,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:08,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:08,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:08,286 INFO L87 Difference]: Start difference. First operand 1394 states and 5489 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:08,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:08,373 INFO L93 Difference]: Finished difference Result 2808 states and 10324 transitions. [2022-01-28 14:37:08,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:08,373 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:08,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:08,379 INFO L225 Difference]: With dead ends: 2808 [2022-01-28 14:37:08,379 INFO L226 Difference]: Without dead ends: 2609 [2022-01-28 14:37:08,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:08,379 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 99 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:08,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 161 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:08,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2609 states. [2022-01-28 14:37:08,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2609 to 1378. [2022-01-28 14:37:08,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 1377 states have (on average 3.945533769063181) internal successors, (5433), 1377 states have internal predecessors, (5433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:08,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 5433 transitions. [2022-01-28 14:37:08,404 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 5433 transitions. Word has length 25 [2022-01-28 14:37:08,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:08,404 INFO L470 AbstractCegarLoop]: Abstraction has 1378 states and 5433 transitions. [2022-01-28 14:37:08,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:08,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 5433 transitions. [2022-01-28 14:37:08,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:08,406 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:08,407 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:08,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable380 [2022-01-28 14:37:08,407 INFO L402 AbstractCegarLoop]: === Iteration 382 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:08,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:08,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1519817431, now seen corresponding path program 377 times [2022-01-28 14:37:08,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:08,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686375441] [2022-01-28 14:37:08,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:08,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:08,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:08,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:08,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:08,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686375441] [2022-01-28 14:37:08,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686375441] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:08,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:08,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:08,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822463377] [2022-01-28 14:37:08,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:08,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:08,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:08,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:08,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:08,501 INFO L87 Difference]: Start difference. First operand 1378 states and 5433 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:08,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:08,583 INFO L93 Difference]: Finished difference Result 2852 states and 10500 transitions. [2022-01-28 14:37:08,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:08,583 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:08,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:08,588 INFO L225 Difference]: With dead ends: 2852 [2022-01-28 14:37:08,588 INFO L226 Difference]: Without dead ends: 2665 [2022-01-28 14:37:08,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:08,588 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 99 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:08,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 169 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:08,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2665 states. [2022-01-28 14:37:08,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2665 to 1406. [2022-01-28 14:37:08,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1406 states, 1405 states have (on average 3.929537366548043) internal successors, (5521), 1405 states have internal predecessors, (5521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:08,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 5521 transitions. [2022-01-28 14:37:08,613 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 5521 transitions. Word has length 25 [2022-01-28 14:37:08,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:08,613 INFO L470 AbstractCegarLoop]: Abstraction has 1406 states and 5521 transitions. [2022-01-28 14:37:08,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:08,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 5521 transitions. [2022-01-28 14:37:08,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:08,615 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:08,615 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:08,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable381 [2022-01-28 14:37:08,615 INFO L402 AbstractCegarLoop]: === Iteration 383 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:08,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:08,616 INFO L85 PathProgramCache]: Analyzing trace with hash -523519563, now seen corresponding path program 378 times [2022-01-28 14:37:08,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:08,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457775817] [2022-01-28 14:37:08,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:08,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:08,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:08,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:08,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:08,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457775817] [2022-01-28 14:37:08,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457775817] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:08,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:08,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:08,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873221354] [2022-01-28 14:37:08,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:08,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:08,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:08,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:08,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:08,706 INFO L87 Difference]: Start difference. First operand 1406 states and 5521 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:08,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:08,796 INFO L93 Difference]: Finished difference Result 2848 states and 10460 transitions. [2022-01-28 14:37:08,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:08,796 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:08,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:08,801 INFO L225 Difference]: With dead ends: 2848 [2022-01-28 14:37:08,801 INFO L226 Difference]: Without dead ends: 2629 [2022-01-28 14:37:08,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:08,801 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 93 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:08,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 176 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:08,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2629 states. [2022-01-28 14:37:08,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2629 to 1370. [2022-01-28 14:37:08,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1369 states have (on average 3.9510591672753836) internal successors, (5409), 1369 states have internal predecessors, (5409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:08,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 5409 transitions. [2022-01-28 14:37:08,827 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 5409 transitions. Word has length 25 [2022-01-28 14:37:08,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:08,827 INFO L470 AbstractCegarLoop]: Abstraction has 1370 states and 5409 transitions. [2022-01-28 14:37:08,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:08,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 5409 transitions. [2022-01-28 14:37:08,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:08,830 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:08,830 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:08,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable382 [2022-01-28 14:37:08,831 INFO L402 AbstractCegarLoop]: === Iteration 384 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:08,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:08,838 INFO L85 PathProgramCache]: Analyzing trace with hash 426846935, now seen corresponding path program 379 times [2022-01-28 14:37:08,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:08,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418018505] [2022-01-28 14:37:08,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:08,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:08,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:08,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:08,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:08,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418018505] [2022-01-28 14:37:08,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418018505] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:08,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:08,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:08,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236616375] [2022-01-28 14:37:08,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:08,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:08,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:08,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:08,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:08,959 INFO L87 Difference]: Start difference. First operand 1370 states and 5409 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:09,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:09,069 INFO L93 Difference]: Finished difference Result 2987 states and 11039 transitions. [2022-01-28 14:37:09,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:09,069 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:09,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:09,075 INFO L225 Difference]: With dead ends: 2987 [2022-01-28 14:37:09,075 INFO L226 Difference]: Without dead ends: 2800 [2022-01-28 14:37:09,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:09,075 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 104 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:09,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 161 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:09,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2800 states. [2022-01-28 14:37:09,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2800 to 1420. [2022-01-28 14:37:09,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 1419 states have (on average 3.9450317124735728) internal successors, (5598), 1419 states have internal predecessors, (5598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:09,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 5598 transitions. [2022-01-28 14:37:09,101 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 5598 transitions. Word has length 25 [2022-01-28 14:37:09,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:09,101 INFO L470 AbstractCegarLoop]: Abstraction has 1420 states and 5598 transitions. [2022-01-28 14:37:09,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:09,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 5598 transitions. [2022-01-28 14:37:09,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:09,103 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:09,103 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:09,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable383 [2022-01-28 14:37:09,103 INFO L402 AbstractCegarLoop]: === Iteration 385 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:09,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:09,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1616490059, now seen corresponding path program 380 times [2022-01-28 14:37:09,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:09,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449187973] [2022-01-28 14:37:09,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:09,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:09,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:09,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:09,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:09,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449187973] [2022-01-28 14:37:09,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449187973] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:09,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:09,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:09,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144040929] [2022-01-28 14:37:09,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:09,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:09,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:09,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:09,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:09,237 INFO L87 Difference]: Start difference. First operand 1420 states and 5598 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:09,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:09,332 INFO L93 Difference]: Finished difference Result 2983 states and 10999 transitions. [2022-01-28 14:37:09,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:09,332 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:09,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:09,340 INFO L225 Difference]: With dead ends: 2983 [2022-01-28 14:37:09,340 INFO L226 Difference]: Without dead ends: 2772 [2022-01-28 14:37:09,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:09,340 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 111 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:09,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 142 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:09,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2772 states. [2022-01-28 14:37:09,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2772 to 1392. [2022-01-28 14:37:09,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1391 states have (on average 3.9511143062544933) internal successors, (5496), 1391 states have internal predecessors, (5496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:09,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 5496 transitions. [2022-01-28 14:37:09,369 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 5496 transitions. Word has length 25 [2022-01-28 14:37:09,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:09,369 INFO L470 AbstractCegarLoop]: Abstraction has 1392 states and 5496 transitions. [2022-01-28 14:37:09,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:09,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 5496 transitions. [2022-01-28 14:37:09,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:09,371 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:09,371 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:09,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable384 [2022-01-28 14:37:09,371 INFO L402 AbstractCegarLoop]: === Iteration 386 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:09,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:09,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1631496117, now seen corresponding path program 381 times [2022-01-28 14:37:09,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:09,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239366998] [2022-01-28 14:37:09,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:09,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:09,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:09,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:09,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239366998] [2022-01-28 14:37:09,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239366998] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:09,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:09,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:09,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242995704] [2022-01-28 14:37:09,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:09,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:09,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:09,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:09,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:09,452 INFO L87 Difference]: Start difference. First operand 1392 states and 5496 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:09,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:09,548 INFO L93 Difference]: Finished difference Result 3044 states and 11227 transitions. [2022-01-28 14:37:09,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:09,548 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:09,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:09,555 INFO L225 Difference]: With dead ends: 3044 [2022-01-28 14:37:09,556 INFO L226 Difference]: Without dead ends: 2857 [2022-01-28 14:37:09,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:09,556 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 117 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:09,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 144 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:09,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2022-01-28 14:37:09,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 1438. [2022-01-28 14:37:09,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1438 states, 1437 states have (on average 3.9338900487125956) internal successors, (5653), 1437 states have internal predecessors, (5653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:09,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 5653 transitions. [2022-01-28 14:37:09,589 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 5653 transitions. Word has length 25 [2022-01-28 14:37:09,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:09,589 INFO L470 AbstractCegarLoop]: Abstraction has 1438 states and 5653 transitions. [2022-01-28 14:37:09,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:09,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 5653 transitions. [2022-01-28 14:37:09,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:09,591 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:09,591 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:09,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable385 [2022-01-28 14:37:09,591 INFO L402 AbstractCegarLoop]: === Iteration 387 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:09,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:09,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1712385973, now seen corresponding path program 382 times [2022-01-28 14:37:09,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:09,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835657319] [2022-01-28 14:37:09,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:09,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:09,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:09,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:09,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:09,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835657319] [2022-01-28 14:37:09,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835657319] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:09,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:09,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:09,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129309841] [2022-01-28 14:37:09,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:09,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:09,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:09,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:09,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:09,700 INFO L87 Difference]: Start difference. First operand 1438 states and 5653 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:09,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:09,803 INFO L93 Difference]: Finished difference Result 3079 states and 11316 transitions. [2022-01-28 14:37:09,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:09,803 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:09,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:09,809 INFO L225 Difference]: With dead ends: 3079 [2022-01-28 14:37:09,809 INFO L226 Difference]: Without dead ends: 2811 [2022-01-28 14:37:09,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:09,810 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 102 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:09,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 151 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:09,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2811 states. [2022-01-28 14:37:09,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2811 to 1392. [2022-01-28 14:37:09,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1391 states have (on average 3.9352983465133) internal successors, (5474), 1391 states have internal predecessors, (5474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:09,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 5474 transitions. [2022-01-28 14:37:09,836 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 5474 transitions. Word has length 25 [2022-01-28 14:37:09,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:09,836 INFO L470 AbstractCegarLoop]: Abstraction has 1392 states and 5474 transitions. [2022-01-28 14:37:09,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:09,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 5474 transitions. [2022-01-28 14:37:09,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:09,838 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:09,838 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:09,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable386 [2022-01-28 14:37:09,838 INFO L402 AbstractCegarLoop]: === Iteration 388 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:09,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:09,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1681123565, now seen corresponding path program 383 times [2022-01-28 14:37:09,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:09,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442812782] [2022-01-28 14:37:09,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:09,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:09,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:09,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:09,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442812782] [2022-01-28 14:37:09,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442812782] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:09,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:09,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:09,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680328688] [2022-01-28 14:37:09,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:09,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:09,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:09,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:09,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:09,966 INFO L87 Difference]: Start difference. First operand 1392 states and 5474 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:10,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:10,098 INFO L93 Difference]: Finished difference Result 3034 states and 11174 transitions. [2022-01-28 14:37:10,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:10,098 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:10,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:10,105 INFO L225 Difference]: With dead ends: 3034 [2022-01-28 14:37:10,105 INFO L226 Difference]: Without dead ends: 2851 [2022-01-28 14:37:10,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:10,106 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 104 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:10,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 156 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:10,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2851 states. [2022-01-28 14:37:10,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2851 to 1436. [2022-01-28 14:37:10,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1435 states have (on average 3.9205574912891987) internal successors, (5626), 1435 states have internal predecessors, (5626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:10,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 5626 transitions. [2022-01-28 14:37:10,134 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 5626 transitions. Word has length 25 [2022-01-28 14:37:10,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:10,135 INFO L470 AbstractCegarLoop]: Abstraction has 1436 states and 5626 transitions. [2022-01-28 14:37:10,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:10,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 5626 transitions. [2022-01-28 14:37:10,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:10,137 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:10,137 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:10,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable387 [2022-01-28 14:37:10,137 INFO L402 AbstractCegarLoop]: === Iteration 389 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:10,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:10,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1544324725, now seen corresponding path program 384 times [2022-01-28 14:37:10,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:10,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381992320] [2022-01-28 14:37:10,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:10,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:10,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:10,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:10,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:10,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381992320] [2022-01-28 14:37:10,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381992320] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:10,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:10,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:10,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944948551] [2022-01-28 14:37:10,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:10,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:10,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:10,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:10,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:10,258 INFO L87 Difference]: Start difference. First operand 1436 states and 5626 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:10,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:10,362 INFO L93 Difference]: Finished difference Result 3073 states and 11277 transitions. [2022-01-28 14:37:10,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:10,363 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:10,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:10,368 INFO L225 Difference]: With dead ends: 3073 [2022-01-28 14:37:10,369 INFO L226 Difference]: Without dead ends: 2777 [2022-01-28 14:37:10,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:10,369 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 98 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:10,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 154 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:10,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2777 states. [2022-01-28 14:37:10,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2777 to 1362. [2022-01-28 14:37:10,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 1361 states have (on average 3.9566495224099927) internal successors, (5385), 1361 states have internal predecessors, (5385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:10,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 5385 transitions. [2022-01-28 14:37:10,394 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 5385 transitions. Word has length 25 [2022-01-28 14:37:10,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:10,394 INFO L470 AbstractCegarLoop]: Abstraction has 1362 states and 5385 transitions. [2022-01-28 14:37:10,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:10,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 5385 transitions. [2022-01-28 14:37:10,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:10,396 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:10,396 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:10,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable388 [2022-01-28 14:37:10,397 INFO L402 AbstractCegarLoop]: === Iteration 390 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:10,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:10,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1460770549, now seen corresponding path program 385 times [2022-01-28 14:37:10,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:10,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83941320] [2022-01-28 14:37:10,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:10,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:10,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:10,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:10,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:10,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83941320] [2022-01-28 14:37:10,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83941320] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:10,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:10,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:10,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373597481] [2022-01-28 14:37:10,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:10,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:10,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:10,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:10,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:10,521 INFO L87 Difference]: Start difference. First operand 1362 states and 5385 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:10,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:10,629 INFO L93 Difference]: Finished difference Result 2878 states and 10584 transitions. [2022-01-28 14:37:10,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:10,629 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:10,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:10,635 INFO L225 Difference]: With dead ends: 2878 [2022-01-28 14:37:10,635 INFO L226 Difference]: Without dead ends: 2719 [2022-01-28 14:37:10,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:10,635 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 109 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:10,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 157 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:10,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2719 states. [2022-01-28 14:37:10,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2719 to 1394. [2022-01-28 14:37:10,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 1393 states have (on average 3.946159368269921) internal successors, (5497), 1393 states have internal predecessors, (5497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:10,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 5497 transitions. [2022-01-28 14:37:10,661 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 5497 transitions. Word has length 25 [2022-01-28 14:37:10,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:10,661 INFO L470 AbstractCegarLoop]: Abstraction has 1394 states and 5497 transitions. [2022-01-28 14:37:10,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:10,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 5497 transitions. [2022-01-28 14:37:10,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:10,663 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:10,664 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:10,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable389 [2022-01-28 14:37:10,664 INFO L402 AbstractCegarLoop]: === Iteration 391 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:10,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:10,664 INFO L85 PathProgramCache]: Analyzing trace with hash 452472565, now seen corresponding path program 386 times [2022-01-28 14:37:10,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:10,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251778457] [2022-01-28 14:37:10,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:10,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:10,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:10,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:10,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251778457] [2022-01-28 14:37:10,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251778457] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:10,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:10,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:10,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929833809] [2022-01-28 14:37:10,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:10,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:10,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:10,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:10,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:10,767 INFO L87 Difference]: Start difference. First operand 1394 states and 5497 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:10,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:10,838 INFO L93 Difference]: Finished difference Result 2941 states and 10791 transitions. [2022-01-28 14:37:10,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:10,838 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:10,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:10,854 INFO L225 Difference]: With dead ends: 2941 [2022-01-28 14:37:10,854 INFO L226 Difference]: Without dead ends: 2687 [2022-01-28 14:37:10,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:10,855 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 129 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:10,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 140 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:10,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2687 states. [2022-01-28 14:37:10,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2687 to 1362. [2022-01-28 14:37:10,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 1361 states have (on average 3.9448934606906687) internal successors, (5369), 1361 states have internal predecessors, (5369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:10,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 5369 transitions. [2022-01-28 14:37:10,881 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 5369 transitions. Word has length 25 [2022-01-28 14:37:10,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:10,881 INFO L470 AbstractCegarLoop]: Abstraction has 1362 states and 5369 transitions. [2022-01-28 14:37:10,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:10,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 5369 transitions. [2022-01-28 14:37:10,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:10,883 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:10,883 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:10,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable390 [2022-01-28 14:37:10,883 INFO L402 AbstractCegarLoop]: === Iteration 392 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:10,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:10,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1845163241, now seen corresponding path program 387 times [2022-01-28 14:37:10,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:10,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817962300] [2022-01-28 14:37:10,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:10,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:10,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:10,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:10,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:10,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817962300] [2022-01-28 14:37:10,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817962300] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:10,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:10,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:10,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283695061] [2022-01-28 14:37:10,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:10,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:10,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:10,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:10,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:10,963 INFO L87 Difference]: Start difference. First operand 1362 states and 5369 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:11,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:11,042 INFO L93 Difference]: Finished difference Result 2827 states and 10385 transitions. [2022-01-28 14:37:11,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:11,042 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:11,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:11,048 INFO L225 Difference]: With dead ends: 2827 [2022-01-28 14:37:11,048 INFO L226 Difference]: Without dead ends: 2668 [2022-01-28 14:37:11,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:11,049 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 102 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:11,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 168 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:11,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2668 states. [2022-01-28 14:37:11,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2668 to 1378. [2022-01-28 14:37:11,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 1377 states have (on average 3.933914306463326) internal successors, (5417), 1377 states have internal predecessors, (5417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:11,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 5417 transitions. [2022-01-28 14:37:11,075 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 5417 transitions. Word has length 25 [2022-01-28 14:37:11,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:11,075 INFO L470 AbstractCegarLoop]: Abstraction has 1378 states and 5417 transitions. [2022-01-28 14:37:11,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:11,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 5417 transitions. [2022-01-28 14:37:11,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:11,077 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:11,077 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:11,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable391 [2022-01-28 14:37:11,077 INFO L402 AbstractCegarLoop]: === Iteration 393 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:11,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:11,078 INFO L85 PathProgramCache]: Analyzing trace with hash -836865257, now seen corresponding path program 388 times [2022-01-28 14:37:11,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:11,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411457583] [2022-01-28 14:37:11,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:11,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:11,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:11,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:11,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:11,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411457583] [2022-01-28 14:37:11,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411457583] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:11,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:11,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:11,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103141793] [2022-01-28 14:37:11,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:11,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:11,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:11,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:11,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:11,181 INFO L87 Difference]: Start difference. First operand 1378 states and 5417 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:11,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:11,279 INFO L93 Difference]: Finished difference Result 2855 states and 10473 transitions. [2022-01-28 14:37:11,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:11,279 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:11,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:11,285 INFO L225 Difference]: With dead ends: 2855 [2022-01-28 14:37:11,286 INFO L226 Difference]: Without dead ends: 2652 [2022-01-28 14:37:11,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:11,286 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 102 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:11,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 157 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:11,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2652 states. [2022-01-28 14:37:11,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2652 to 1362. [2022-01-28 14:37:11,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 1361 states have (on average 3.9390154298310067) internal successors, (5361), 1361 states have internal predecessors, (5361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:11,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 5361 transitions. [2022-01-28 14:37:11,313 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 5361 transitions. Word has length 25 [2022-01-28 14:37:11,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:11,313 INFO L470 AbstractCegarLoop]: Abstraction has 1362 states and 5361 transitions. [2022-01-28 14:37:11,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:11,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 5361 transitions. [2022-01-28 14:37:11,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:11,315 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:11,315 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:11,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable392 [2022-01-28 14:37:11,315 INFO L402 AbstractCegarLoop]: === Iteration 394 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:11,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:11,316 INFO L85 PathProgramCache]: Analyzing trace with hash 851381015, now seen corresponding path program 389 times [2022-01-28 14:37:11,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:11,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676712001] [2022-01-28 14:37:11,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:11,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:11,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:11,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:11,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:11,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676712001] [2022-01-28 14:37:11,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676712001] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:11,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:11,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:11,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626510828] [2022-01-28 14:37:11,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:11,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:11,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:11,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:11,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:11,399 INFO L87 Difference]: Start difference. First operand 1362 states and 5361 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:11,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:11,474 INFO L93 Difference]: Finished difference Result 2948 states and 10827 transitions. [2022-01-28 14:37:11,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:11,474 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:11,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:11,481 INFO L225 Difference]: With dead ends: 2948 [2022-01-28 14:37:11,481 INFO L226 Difference]: Without dead ends: 2761 [2022-01-28 14:37:11,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:11,481 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 117 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:11,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 141 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:11,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2761 states. [2022-01-28 14:37:11,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2761 to 1408. [2022-01-28 14:37:11,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1408 states, 1407 states have (on average 3.92181947405828) internal successors, (5518), 1407 states have internal predecessors, (5518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:11,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 5518 transitions. [2022-01-28 14:37:11,516 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 5518 transitions. Word has length 25 [2022-01-28 14:37:11,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:11,517 INFO L470 AbstractCegarLoop]: Abstraction has 1408 states and 5518 transitions. [2022-01-28 14:37:11,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:11,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 5518 transitions. [2022-01-28 14:37:11,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:11,518 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:11,518 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:11,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable393 [2022-01-28 14:37:11,519 INFO L402 AbstractCegarLoop]: === Iteration 395 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:11,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:11,519 INFO L85 PathProgramCache]: Analyzing trace with hash 498241525, now seen corresponding path program 390 times [2022-01-28 14:37:11,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:11,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858777440] [2022-01-28 14:37:11,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:11,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:11,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:11,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:11,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:11,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858777440] [2022-01-28 14:37:11,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858777440] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:11,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:11,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:11,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613981226] [2022-01-28 14:37:11,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:11,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:11,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:11,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:11,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:11,609 INFO L87 Difference]: Start difference. First operand 1408 states and 5518 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:11,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:11,687 INFO L93 Difference]: Finished difference Result 2983 states and 10916 transitions. [2022-01-28 14:37:11,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:11,687 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:11,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:11,694 INFO L225 Difference]: With dead ends: 2983 [2022-01-28 14:37:11,694 INFO L226 Difference]: Without dead ends: 2699 [2022-01-28 14:37:11,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:11,694 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 104 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:11,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 166 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:11,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2699 states. [2022-01-28 14:37:11,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2699 to 1346. [2022-01-28 14:37:11,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1345 states have (on average 3.9442379182156135) internal successors, (5305), 1345 states have internal predecessors, (5305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:11,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 5305 transitions. [2022-01-28 14:37:11,721 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 5305 transitions. Word has length 25 [2022-01-28 14:37:11,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:11,721 INFO L470 AbstractCegarLoop]: Abstraction has 1346 states and 5305 transitions. [2022-01-28 14:37:11,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:11,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 5305 transitions. [2022-01-28 14:37:11,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:11,724 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:11,724 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:11,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable394 [2022-01-28 14:37:11,724 INFO L402 AbstractCegarLoop]: === Iteration 396 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:11,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:11,724 INFO L85 PathProgramCache]: Analyzing trace with hash -461570315, now seen corresponding path program 391 times [2022-01-28 14:37:11,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:11,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119797244] [2022-01-28 14:37:11,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:11,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:11,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:11,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:11,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:11,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119797244] [2022-01-28 14:37:11,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119797244] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:11,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:11,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:11,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187710232] [2022-01-28 14:37:11,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:11,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:11,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:11,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:11,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:11,802 INFO L87 Difference]: Start difference. First operand 1346 states and 5305 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:11,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:11,869 INFO L93 Difference]: Finished difference Result 2828 states and 10385 transitions. [2022-01-28 14:37:11,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:11,869 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:11,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:11,875 INFO L225 Difference]: With dead ends: 2828 [2022-01-28 14:37:11,875 INFO L226 Difference]: Without dead ends: 2669 [2022-01-28 14:37:11,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:11,875 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 126 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:11,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 136 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:11,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2669 states. [2022-01-28 14:37:11,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2669 to 1394. [2022-01-28 14:37:11,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 1393 states have (on average 3.940416367552046) internal successors, (5489), 1393 states have internal predecessors, (5489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:11,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 5489 transitions. [2022-01-28 14:37:11,900 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 5489 transitions. Word has length 25 [2022-01-28 14:37:11,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:11,900 INFO L470 AbstractCegarLoop]: Abstraction has 1394 states and 5489 transitions. [2022-01-28 14:37:11,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:11,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 5489 transitions. [2022-01-28 14:37:11,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:11,902 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:11,902 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:11,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable395 [2022-01-28 14:37:11,902 INFO L402 AbstractCegarLoop]: === Iteration 397 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:11,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:11,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1469868299, now seen corresponding path program 392 times [2022-01-28 14:37:11,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:11,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851107667] [2022-01-28 14:37:11,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:11,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:11,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:11,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:11,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:11,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851107667] [2022-01-28 14:37:11,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851107667] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:11,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:11,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:11,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552670319] [2022-01-28 14:37:11,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:11,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:11,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:11,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:11,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:11,991 INFO L87 Difference]: Start difference. First operand 1394 states and 5489 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:12,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:12,063 INFO L93 Difference]: Finished difference Result 2891 states and 10592 transitions. [2022-01-28 14:37:12,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:12,063 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:12,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:12,069 INFO L225 Difference]: With dead ends: 2891 [2022-01-28 14:37:12,069 INFO L226 Difference]: Without dead ends: 2637 [2022-01-28 14:37:12,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:12,069 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 114 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:12,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 144 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:12,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2637 states. [2022-01-28 14:37:12,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2637 to 1362. [2022-01-28 14:37:12,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 1361 states have (on average 3.9390154298310067) internal successors, (5361), 1361 states have internal predecessors, (5361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:12,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 5361 transitions. [2022-01-28 14:37:12,094 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 5361 transitions. Word has length 25 [2022-01-28 14:37:12,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:12,094 INFO L470 AbstractCegarLoop]: Abstraction has 1362 states and 5361 transitions. [2022-01-28 14:37:12,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:12,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 5361 transitions. [2022-01-28 14:37:12,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:12,097 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:12,097 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:12,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable396 [2022-01-28 14:37:12,097 INFO L402 AbstractCegarLoop]: === Iteration 398 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:12,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:12,097 INFO L85 PathProgramCache]: Analyzing trace with hash 578987701, now seen corresponding path program 393 times [2022-01-28 14:37:12,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:12,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371900370] [2022-01-28 14:37:12,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:12,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:12,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:12,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:12,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:12,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371900370] [2022-01-28 14:37:12,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371900370] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:12,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:12,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:12,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045892423] [2022-01-28 14:37:12,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:12,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:12,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:12,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:12,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:12,221 INFO L87 Difference]: Start difference. First operand 1362 states and 5361 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:12,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:12,293 INFO L93 Difference]: Finished difference Result 2733 states and 10034 transitions. [2022-01-28 14:37:12,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:12,293 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:12,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:12,299 INFO L225 Difference]: With dead ends: 2733 [2022-01-28 14:37:12,299 INFO L226 Difference]: Without dead ends: 2574 [2022-01-28 14:37:12,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:12,299 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 107 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:12,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 147 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:12,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2574 states. [2022-01-28 14:37:12,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2574 to 1378. [2022-01-28 14:37:12,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 1377 states have (on average 3.9281045751633985) internal successors, (5409), 1377 states have internal predecessors, (5409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:12,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 5409 transitions. [2022-01-28 14:37:12,326 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 5409 transitions. Word has length 25 [2022-01-28 14:37:12,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:12,326 INFO L470 AbstractCegarLoop]: Abstraction has 1378 states and 5409 transitions. [2022-01-28 14:37:12,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:12,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 5409 transitions. [2022-01-28 14:37:12,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:12,328 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:12,328 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:12,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable397 [2022-01-28 14:37:12,328 INFO L402 AbstractCegarLoop]: === Iteration 399 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:12,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:12,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1363284299, now seen corresponding path program 394 times [2022-01-28 14:37:12,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:12,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047133856] [2022-01-28 14:37:12,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:12,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:12,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:12,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:12,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:12,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047133856] [2022-01-28 14:37:12,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047133856] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:12,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:12,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:12,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123140623] [2022-01-28 14:37:12,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:12,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:12,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:12,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:12,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:12,411 INFO L87 Difference]: Start difference. First operand 1378 states and 5409 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:12,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:12,503 INFO L93 Difference]: Finished difference Result 2621 states and 9697 transitions. [2022-01-28 14:37:12,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:12,503 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:12,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:12,508 INFO L225 Difference]: With dead ends: 2621 [2022-01-28 14:37:12,508 INFO L226 Difference]: Without dead ends: 2430 [2022-01-28 14:37:12,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:12,523 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 109 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:12,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 143 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:12,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2430 states. [2022-01-28 14:37:12,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2430 to 1362. [2022-01-28 14:37:12,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 1361 states have (on average 3.9331373989713447) internal successors, (5353), 1361 states have internal predecessors, (5353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:12,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 5353 transitions. [2022-01-28 14:37:12,548 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 5353 transitions. Word has length 25 [2022-01-28 14:37:12,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:12,548 INFO L470 AbstractCegarLoop]: Abstraction has 1362 states and 5353 transitions. [2022-01-28 14:37:12,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:12,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 5353 transitions. [2022-01-28 14:37:12,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:12,550 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:12,550 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:12,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable398 [2022-01-28 14:37:12,550 INFO L402 AbstractCegarLoop]: === Iteration 400 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:12,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:12,551 INFO L85 PathProgramCache]: Analyzing trace with hash 324961973, now seen corresponding path program 395 times [2022-01-28 14:37:12,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:12,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652719965] [2022-01-28 14:37:12,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:12,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:12,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:12,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:12,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:12,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652719965] [2022-01-28 14:37:12,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652719965] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:12,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:12,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:12,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461258971] [2022-01-28 14:37:12,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:12,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:12,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:12,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:12,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:12,630 INFO L87 Difference]: Start difference. First operand 1362 states and 5353 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:12,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:12,716 INFO L93 Difference]: Finished difference Result 2868 states and 10525 transitions. [2022-01-28 14:37:12,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:12,716 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:12,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:12,722 INFO L225 Difference]: With dead ends: 2868 [2022-01-28 14:37:12,722 INFO L226 Difference]: Without dead ends: 2693 [2022-01-28 14:37:12,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:12,722 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 114 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:12,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 144 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:12,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2693 states. [2022-01-28 14:37:12,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2693 to 1402. [2022-01-28 14:37:12,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1402 states, 1401 states have (on average 3.9207708779443253) internal successors, (5493), 1401 states have internal predecessors, (5493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:12,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 5493 transitions. [2022-01-28 14:37:12,747 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 5493 transitions. Word has length 25 [2022-01-28 14:37:12,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:12,747 INFO L470 AbstractCegarLoop]: Abstraction has 1402 states and 5493 transitions. [2022-01-28 14:37:12,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:12,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 5493 transitions. [2022-01-28 14:37:12,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:12,749 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:12,749 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:12,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable399 [2022-01-28 14:37:12,749 INFO L402 AbstractCegarLoop]: === Iteration 401 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:12,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:12,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1330562413, now seen corresponding path program 396 times [2022-01-28 14:37:12,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:12,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221452212] [2022-01-28 14:37:12,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:12,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:12,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:12,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:12,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221452212] [2022-01-28 14:37:12,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221452212] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:12,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:12,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:12,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753004256] [2022-01-28 14:37:12,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:12,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:12,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:12,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:12,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:12,833 INFO L87 Difference]: Start difference. First operand 1402 states and 5493 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:12,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:12,906 INFO L93 Difference]: Finished difference Result 2820 states and 10325 transitions. [2022-01-28 14:37:12,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:12,906 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:12,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:12,912 INFO L225 Difference]: With dead ends: 2820 [2022-01-28 14:37:12,912 INFO L226 Difference]: Without dead ends: 2542 [2022-01-28 14:37:12,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:12,912 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 101 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:12,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 148 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:12,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2542 states. [2022-01-28 14:37:12,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2542 to 1346. [2022-01-28 14:37:12,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1345 states have (on average 3.9382899628252788) internal successors, (5297), 1345 states have internal predecessors, (5297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:12,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 5297 transitions. [2022-01-28 14:37:12,936 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 5297 transitions. Word has length 25 [2022-01-28 14:37:12,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:12,936 INFO L470 AbstractCegarLoop]: Abstraction has 1346 states and 5297 transitions. [2022-01-28 14:37:12,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:12,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 5297 transitions. [2022-01-28 14:37:12,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:12,938 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:12,938 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:12,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable400 [2022-01-28 14:37:12,938 INFO L402 AbstractCegarLoop]: === Iteration 402 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:12,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:12,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1623213481, now seen corresponding path program 397 times [2022-01-28 14:37:12,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:12,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057437612] [2022-01-28 14:37:12,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:12,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:12,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:13,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:13,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:13,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057437612] [2022-01-28 14:37:13,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057437612] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:13,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:13,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:13,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59711893] [2022-01-28 14:37:13,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:13,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:13,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:13,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:13,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:13,017 INFO L87 Difference]: Start difference. First operand 1346 states and 5297 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:13,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:13,088 INFO L93 Difference]: Finished difference Result 2718 states and 9975 transitions. [2022-01-28 14:37:13,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:13,088 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:13,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:13,093 INFO L225 Difference]: With dead ends: 2718 [2022-01-28 14:37:13,093 INFO L226 Difference]: Without dead ends: 2559 [2022-01-28 14:37:13,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:13,093 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 105 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:13,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 163 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:13,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2559 states. [2022-01-28 14:37:13,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2559 to 1370. [2022-01-28 14:37:13,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1369 states have (on average 3.9306062819576333) internal successors, (5381), 1369 states have internal predecessors, (5381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:13,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 5381 transitions. [2022-01-28 14:37:13,118 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 5381 transitions. Word has length 25 [2022-01-28 14:37:13,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:13,118 INFO L470 AbstractCegarLoop]: Abstraction has 1370 states and 5381 transitions. [2022-01-28 14:37:13,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:13,118 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 5381 transitions. [2022-01-28 14:37:13,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:13,120 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:13,120 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:13,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable401 [2022-01-28 14:37:13,120 INFO L402 AbstractCegarLoop]: === Iteration 403 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:13,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:13,121 INFO L85 PathProgramCache]: Analyzing trace with hash -614915497, now seen corresponding path program 398 times [2022-01-28 14:37:13,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:13,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659315912] [2022-01-28 14:37:13,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:13,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:13,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:13,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:13,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659315912] [2022-01-28 14:37:13,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659315912] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:13,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:13,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:13,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022527909] [2022-01-28 14:37:13,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:13,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:13,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:13,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:13,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:13,196 INFO L87 Difference]: Start difference. First operand 1370 states and 5381 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:13,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:13,276 INFO L93 Difference]: Finished difference Result 2746 states and 10063 transitions. [2022-01-28 14:37:13,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:13,276 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:13,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:13,282 INFO L225 Difference]: With dead ends: 2746 [2022-01-28 14:37:13,283 INFO L226 Difference]: Without dead ends: 2543 [2022-01-28 14:37:13,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:13,283 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 107 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:13,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 155 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:13,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2543 states. [2022-01-28 14:37:13,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2543 to 1354. [2022-01-28 14:37:13,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1353 states have (on average 3.9356984478935697) internal successors, (5325), 1353 states have internal predecessors, (5325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:13,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 5325 transitions. [2022-01-28 14:37:13,308 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 5325 transitions. Word has length 25 [2022-01-28 14:37:13,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:13,308 INFO L470 AbstractCegarLoop]: Abstraction has 1354 states and 5325 transitions. [2022-01-28 14:37:13,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:13,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 5325 transitions. [2022-01-28 14:37:13,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:13,310 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:13,310 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:13,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable402 [2022-01-28 14:37:13,311 INFO L402 AbstractCegarLoop]: === Iteration 404 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:13,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:13,311 INFO L85 PathProgramCache]: Analyzing trace with hash 555674165, now seen corresponding path program 399 times [2022-01-28 14:37:13,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:13,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884589970] [2022-01-28 14:37:13,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:13,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:13,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:13,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:13,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:13,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884589970] [2022-01-28 14:37:13,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884589970] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:13,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:13,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:13,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278447680] [2022-01-28 14:37:13,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:13,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:13,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:13,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:13,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:13,390 INFO L87 Difference]: Start difference. First operand 1354 states and 5325 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:13,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:13,460 INFO L93 Difference]: Finished difference Result 2674 states and 9815 transitions. [2022-01-28 14:37:13,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:13,460 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:13,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:13,467 INFO L225 Difference]: With dead ends: 2674 [2022-01-28 14:37:13,468 INFO L226 Difference]: Without dead ends: 2515 [2022-01-28 14:37:13,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:13,468 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 117 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:13,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 141 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:13,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2515 states. [2022-01-28 14:37:13,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2515 to 1370. [2022-01-28 14:37:13,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1369 states have (on average 3.9247626004382763) internal successors, (5373), 1369 states have internal predecessors, (5373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:13,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 5373 transitions. [2022-01-28 14:37:13,496 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 5373 transitions. Word has length 25 [2022-01-28 14:37:13,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:13,496 INFO L470 AbstractCegarLoop]: Abstraction has 1370 states and 5373 transitions. [2022-01-28 14:37:13,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:13,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 5373 transitions. [2022-01-28 14:37:13,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:13,498 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:13,498 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:13,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable403 [2022-01-28 14:37:13,499 INFO L402 AbstractCegarLoop]: === Iteration 405 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:13,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:13,500 INFO L85 PathProgramCache]: Analyzing trace with hash -89857449, now seen corresponding path program 400 times [2022-01-28 14:37:13,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:13,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601887631] [2022-01-28 14:37:13,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:13,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:13,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:13,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:13,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:13,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601887631] [2022-01-28 14:37:13,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601887631] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:13,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:13,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:13,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643996309] [2022-01-28 14:37:13,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:13,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:13,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:13,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:13,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:13,587 INFO L87 Difference]: Start difference. First operand 1370 states and 5373 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:13,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:13,701 INFO L93 Difference]: Finished difference Result 2562 states and 9478 transitions. [2022-01-28 14:37:13,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:13,701 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:13,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:13,706 INFO L225 Difference]: With dead ends: 2562 [2022-01-28 14:37:13,706 INFO L226 Difference]: Without dead ends: 2371 [2022-01-28 14:37:13,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:13,707 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 102 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:13,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 151 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:13,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2371 states. [2022-01-28 14:37:13,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2371 to 1354. [2022-01-28 14:37:13,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1353 states have (on average 3.9297856614929785) internal successors, (5317), 1353 states have internal predecessors, (5317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:13,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 5317 transitions. [2022-01-28 14:37:13,729 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 5317 transitions. Word has length 25 [2022-01-28 14:37:13,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:13,729 INFO L470 AbstractCegarLoop]: Abstraction has 1354 states and 5317 transitions. [2022-01-28 14:37:13,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:13,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 5317 transitions. [2022-01-28 14:37:13,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:13,731 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:13,731 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:13,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable404 [2022-01-28 14:37:13,731 INFO L402 AbstractCegarLoop]: === Iteration 406 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:13,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:13,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1172466263, now seen corresponding path program 401 times [2022-01-28 14:37:13,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:13,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580460581] [2022-01-28 14:37:13,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:13,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:13,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:13,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:13,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:13,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580460581] [2022-01-28 14:37:13,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580460581] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:13,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:13,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:13,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088776220] [2022-01-28 14:37:13,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:13,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:13,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:13,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:13,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:13,837 INFO L87 Difference]: Start difference. First operand 1354 states and 5317 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:13,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:13,941 INFO L93 Difference]: Finished difference Result 2710 states and 9947 transitions. [2022-01-28 14:37:13,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:13,942 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:13,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:13,947 INFO L225 Difference]: With dead ends: 2710 [2022-01-28 14:37:13,947 INFO L226 Difference]: Without dead ends: 2523 [2022-01-28 14:37:13,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:13,947 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 107 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:13,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 142 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:13,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2523 states. [2022-01-28 14:37:13,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2523 to 1378. [2022-01-28 14:37:13,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 1377 states have (on average 3.916485112563544) internal successors, (5393), 1377 states have internal predecessors, (5393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:13,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 5393 transitions. [2022-01-28 14:37:13,972 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 5393 transitions. Word has length 25 [2022-01-28 14:37:13,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:13,972 INFO L470 AbstractCegarLoop]: Abstraction has 1378 states and 5393 transitions. [2022-01-28 14:37:13,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:13,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 5393 transitions. [2022-01-28 14:37:13,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:13,974 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:13,974 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:13,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable405 [2022-01-28 14:37:13,974 INFO L402 AbstractCegarLoop]: === Iteration 407 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:13,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:13,974 INFO L85 PathProgramCache]: Analyzing trace with hash -219678283, now seen corresponding path program 402 times [2022-01-28 14:37:13,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:13,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397752839] [2022-01-28 14:37:13,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:13,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:13,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:14,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:14,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:14,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397752839] [2022-01-28 14:37:14,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397752839] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:14,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:14,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:14,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013227093] [2022-01-28 14:37:14,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:14,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:14,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:14,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:14,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:14,053 INFO L87 Difference]: Start difference. First operand 1378 states and 5393 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:14,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:14,139 INFO L93 Difference]: Finished difference Result 2570 states and 9498 transitions. [2022-01-28 14:37:14,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:14,139 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:14,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:14,147 INFO L225 Difference]: With dead ends: 2570 [2022-01-28 14:37:14,147 INFO L226 Difference]: Without dead ends: 2363 [2022-01-28 14:37:14,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:14,147 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 99 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:14,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 149 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:14,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2022-01-28 14:37:14,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 1346. [2022-01-28 14:37:14,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1345 states have (on average 3.9353159851301114) internal successors, (5293), 1345 states have internal predecessors, (5293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:14,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 5293 transitions. [2022-01-28 14:37:14,186 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 5293 transitions. Word has length 25 [2022-01-28 14:37:14,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:14,186 INFO L470 AbstractCegarLoop]: Abstraction has 1346 states and 5293 transitions. [2022-01-28 14:37:14,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:14,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 5293 transitions. [2022-01-28 14:37:14,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:14,188 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:14,188 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:14,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable406 [2022-01-28 14:37:14,188 INFO L402 AbstractCegarLoop]: === Iteration 408 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:14,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:14,189 INFO L85 PathProgramCache]: Analyzing trace with hash 79495767, now seen corresponding path program 403 times [2022-01-28 14:37:14,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:14,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279689230] [2022-01-28 14:37:14,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:14,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:14,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:14,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:14,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:14,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279689230] [2022-01-28 14:37:14,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279689230] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:14,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:14,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:14,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732073367] [2022-01-28 14:37:14,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:14,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:14,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:14,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:14,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:14,282 INFO L87 Difference]: Start difference. First operand 1346 states and 5293 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:14,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:14,357 INFO L93 Difference]: Finished difference Result 2915 states and 10741 transitions. [2022-01-28 14:37:14,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:14,358 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:14,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:14,363 INFO L225 Difference]: With dead ends: 2915 [2022-01-28 14:37:14,363 INFO L226 Difference]: Without dead ends: 2728 [2022-01-28 14:37:14,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:14,363 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 130 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:14,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 131 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:14,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2728 states. [2022-01-28 14:37:14,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2728 to 1390. [2022-01-28 14:37:14,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1390 states, 1389 states have (on average 3.931605471562275) internal successors, (5461), 1389 states have internal predecessors, (5461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:14,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 5461 transitions. [2022-01-28 14:37:14,388 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 5461 transitions. Word has length 25 [2022-01-28 14:37:14,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:14,388 INFO L470 AbstractCegarLoop]: Abstraction has 1390 states and 5461 transitions. [2022-01-28 14:37:14,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:14,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 5461 transitions. [2022-01-28 14:37:14,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:14,390 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:14,390 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:14,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable407 [2022-01-28 14:37:14,390 INFO L402 AbstractCegarLoop]: === Iteration 409 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:14,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:14,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1312648779, now seen corresponding path program 404 times [2022-01-28 14:37:14,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:14,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999235441] [2022-01-28 14:37:14,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:14,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:14,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:14,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:14,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:14,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999235441] [2022-01-28 14:37:14,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999235441] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:14,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:14,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:14,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809790623] [2022-01-28 14:37:14,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:14,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:14,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:14,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:14,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:14,504 INFO L87 Difference]: Start difference. First operand 1390 states and 5461 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:14,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:14,609 INFO L93 Difference]: Finished difference Result 2903 states and 10677 transitions. [2022-01-28 14:37:14,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:14,609 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:14,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:14,615 INFO L225 Difference]: With dead ends: 2903 [2022-01-28 14:37:14,615 INFO L226 Difference]: Without dead ends: 2704 [2022-01-28 14:37:14,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:14,615 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 92 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:14,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 173 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:14,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2704 states. [2022-01-28 14:37:14,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2704 to 1366. [2022-01-28 14:37:14,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1366 states, 1365 states have (on average 3.936263736263736) internal successors, (5373), 1365 states have internal predecessors, (5373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:14,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 5373 transitions. [2022-01-28 14:37:14,641 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 5373 transitions. Word has length 25 [2022-01-28 14:37:14,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:14,641 INFO L470 AbstractCegarLoop]: Abstraction has 1366 states and 5373 transitions. [2022-01-28 14:37:14,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:14,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 5373 transitions. [2022-01-28 14:37:14,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:14,643 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:14,643 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:14,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable408 [2022-01-28 14:37:14,643 INFO L402 AbstractCegarLoop]: === Iteration 410 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:14,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:14,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1741539659, now seen corresponding path program 405 times [2022-01-28 14:37:14,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:14,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255365511] [2022-01-28 14:37:14,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:14,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:14,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:14,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:14,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:14,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255365511] [2022-01-28 14:37:14,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255365511] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:14,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:14,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:14,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726934633] [2022-01-28 14:37:14,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:14,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:14,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:14,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:14,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:14,738 INFO L87 Difference]: Start difference. First operand 1366 states and 5373 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:14,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:14,817 INFO L93 Difference]: Finished difference Result 2938 states and 10788 transitions. [2022-01-28 14:37:14,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:14,817 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:14,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:14,823 INFO L225 Difference]: With dead ends: 2938 [2022-01-28 14:37:14,823 INFO L226 Difference]: Without dead ends: 2751 [2022-01-28 14:37:14,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:14,824 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 110 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:14,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 142 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:14,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2751 states. [2022-01-28 14:37:14,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2751 to 1412. [2022-01-28 14:37:14,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1411 states have (on average 3.919206236711552) internal successors, (5530), 1411 states have internal predecessors, (5530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:14,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 5530 transitions. [2022-01-28 14:37:14,851 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 5530 transitions. Word has length 25 [2022-01-28 14:37:14,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:14,852 INFO L470 AbstractCegarLoop]: Abstraction has 1412 states and 5530 transitions. [2022-01-28 14:37:14,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:14,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 5530 transitions. [2022-01-28 14:37:14,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:14,854 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:14,854 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:14,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable409 [2022-01-28 14:37:14,854 INFO L402 AbstractCegarLoop]: === Iteration 411 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:14,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:14,854 INFO L85 PathProgramCache]: Analyzing trace with hash -372779211, now seen corresponding path program 406 times [2022-01-28 14:37:14,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:14,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956942827] [2022-01-28 14:37:14,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:14,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:14,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:14,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:14,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:14,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956942827] [2022-01-28 14:37:14,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956942827] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:14,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:14,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:14,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028601745] [2022-01-28 14:37:14,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:14,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:14,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:14,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:14,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:14,932 INFO L87 Difference]: Start difference. First operand 1412 states and 5530 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:15,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:15,002 INFO L93 Difference]: Finished difference Result 2973 states and 10877 transitions. [2022-01-28 14:37:15,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:15,002 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:15,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:15,008 INFO L225 Difference]: With dead ends: 2973 [2022-01-28 14:37:15,008 INFO L226 Difference]: Without dead ends: 2705 [2022-01-28 14:37:15,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:15,009 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 123 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:15,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 144 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:15,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2705 states. [2022-01-28 14:37:15,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2705 to 1366. [2022-01-28 14:37:15,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1366 states, 1365 states have (on average 3.9216117216117214) internal successors, (5353), 1365 states have internal predecessors, (5353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:15,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 5353 transitions. [2022-01-28 14:37:15,036 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 5353 transitions. Word has length 25 [2022-01-28 14:37:15,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:15,036 INFO L470 AbstractCegarLoop]: Abstraction has 1366 states and 5353 transitions. [2022-01-28 14:37:15,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:15,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 5353 transitions. [2022-01-28 14:37:15,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:15,038 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:15,038 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:15,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable410 [2022-01-28 14:37:15,038 INFO L402 AbstractCegarLoop]: === Iteration 412 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:15,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:15,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1377282285, now seen corresponding path program 407 times [2022-01-28 14:37:15,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:15,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100562478] [2022-01-28 14:37:15,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:15,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:15,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:15,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:15,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:15,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100562478] [2022-01-28 14:37:15,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100562478] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:15,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:15,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:15,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887846820] [2022-01-28 14:37:15,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:15,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:15,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:15,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:15,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:15,115 INFO L87 Difference]: Start difference. First operand 1366 states and 5353 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:15,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:15,190 INFO L93 Difference]: Finished difference Result 2908 states and 10665 transitions. [2022-01-28 14:37:15,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:15,191 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:15,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:15,197 INFO L225 Difference]: With dead ends: 2908 [2022-01-28 14:37:15,197 INFO L226 Difference]: Without dead ends: 2733 [2022-01-28 14:37:15,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:15,197 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 119 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:15,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 135 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:15,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2733 states. [2022-01-28 14:37:15,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2733 to 1406. [2022-01-28 14:37:15,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1406 states, 1405 states have (on average 3.9096085409252668) internal successors, (5493), 1405 states have internal predecessors, (5493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:15,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 5493 transitions. [2022-01-28 14:37:15,224 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 5493 transitions. Word has length 25 [2022-01-28 14:37:15,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:15,224 INFO L470 AbstractCegarLoop]: Abstraction has 1406 states and 5493 transitions. [2022-01-28 14:37:15,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:15,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 5493 transitions. [2022-01-28 14:37:15,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:15,226 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:15,226 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:15,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable411 [2022-01-28 14:37:15,226 INFO L402 AbstractCegarLoop]: === Iteration 413 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:15,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:15,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1158930699, now seen corresponding path program 408 times [2022-01-28 14:37:15,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:15,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368475093] [2022-01-28 14:37:15,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:15,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:15,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:15,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:15,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:15,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368475093] [2022-01-28 14:37:15,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368475093] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:15,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:15,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:15,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460965126] [2022-01-28 14:37:15,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:15,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:15,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:15,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:15,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:15,324 INFO L87 Difference]: Start difference. First operand 1406 states and 5493 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:15,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:15,397 INFO L93 Difference]: Finished difference Result 2860 states and 10465 transitions. [2022-01-28 14:37:15,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:15,397 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:15,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:15,402 INFO L225 Difference]: With dead ends: 2860 [2022-01-28 14:37:15,403 INFO L226 Difference]: Without dead ends: 2570 [2022-01-28 14:37:15,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:15,403 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 104 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:15,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 141 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:15,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2570 states. [2022-01-28 14:37:15,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2570 to 1338. [2022-01-28 14:37:15,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1338 states, 1337 states have (on average 3.9409124906507107) internal successors, (5269), 1337 states have internal predecessors, (5269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:15,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 5269 transitions. [2022-01-28 14:37:15,429 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 5269 transitions. Word has length 25 [2022-01-28 14:37:15,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:15,429 INFO L470 AbstractCegarLoop]: Abstraction has 1338 states and 5269 transitions. [2022-01-28 14:37:15,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:15,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 5269 transitions. [2022-01-28 14:37:15,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:15,431 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:15,432 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:15,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable412 [2022-01-28 14:37:15,432 INFO L402 AbstractCegarLoop]: === Iteration 414 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:15,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:15,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1225190825, now seen corresponding path program 409 times [2022-01-28 14:37:15,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:15,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24562267] [2022-01-28 14:37:15,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:15,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:15,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:15,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:15,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:15,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24562267] [2022-01-28 14:37:15,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24562267] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:15,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:15,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:15,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986604315] [2022-01-28 14:37:15,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:15,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:15,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:15,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:15,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:15,523 INFO L87 Difference]: Start difference. First operand 1338 states and 5269 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:15,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:15,588 INFO L93 Difference]: Finished difference Result 2810 states and 10302 transitions. [2022-01-28 14:37:15,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:15,589 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:15,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:15,594 INFO L225 Difference]: With dead ends: 2810 [2022-01-28 14:37:15,594 INFO L226 Difference]: Without dead ends: 2651 [2022-01-28 14:37:15,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:15,594 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 130 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:15,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 133 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:15,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2651 states. [2022-01-28 14:37:15,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2651 to 1370. [2022-01-28 14:37:15,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1369 states have (on average 3.9306062819576333) internal successors, (5381), 1369 states have internal predecessors, (5381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:15,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 5381 transitions. [2022-01-28 14:37:15,620 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 5381 transitions. Word has length 25 [2022-01-28 14:37:15,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:15,620 INFO L470 AbstractCegarLoop]: Abstraction has 1370 states and 5381 transitions. [2022-01-28 14:37:15,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:15,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 5381 transitions. [2022-01-28 14:37:15,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:15,622 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:15,622 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:15,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable413 [2022-01-28 14:37:15,623 INFO L402 AbstractCegarLoop]: === Iteration 415 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:15,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:15,623 INFO L85 PathProgramCache]: Analyzing trace with hash 2061478487, now seen corresponding path program 410 times [2022-01-28 14:37:15,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:15,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811382216] [2022-01-28 14:37:15,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:15,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:15,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:15,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:15,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:15,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811382216] [2022-01-28 14:37:15,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811382216] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:15,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:15,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:15,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912505282] [2022-01-28 14:37:15,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:15,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:15,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:15,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:15,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:15,703 INFO L87 Difference]: Start difference. First operand 1370 states and 5381 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:15,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:15,771 INFO L93 Difference]: Finished difference Result 2873 states and 10509 transitions. [2022-01-28 14:37:15,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:15,771 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:15,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:15,777 INFO L225 Difference]: With dead ends: 2873 [2022-01-28 14:37:15,777 INFO L226 Difference]: Without dead ends: 2619 [2022-01-28 14:37:15,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:15,778 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 120 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:15,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 143 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:15,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2619 states. [2022-01-28 14:37:15,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2619 to 1338. [2022-01-28 14:37:15,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1338 states, 1337 states have (on average 3.9289454001495887) internal successors, (5253), 1337 states have internal predecessors, (5253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:15,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 5253 transitions. [2022-01-28 14:37:15,806 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 5253 transitions. Word has length 25 [2022-01-28 14:37:15,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:15,806 INFO L470 AbstractCegarLoop]: Abstraction has 1338 states and 5253 transitions. [2022-01-28 14:37:15,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:15,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 5253 transitions. [2022-01-28 14:37:15,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:15,808 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:15,808 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:15,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable414 [2022-01-28 14:37:15,808 INFO L402 AbstractCegarLoop]: === Iteration 416 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:15,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:15,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1219438057, now seen corresponding path program 411 times [2022-01-28 14:37:15,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:15,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132741452] [2022-01-28 14:37:15,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:15,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:15,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:15,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:15,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:15,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132741452] [2022-01-28 14:37:15,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132741452] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:15,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:15,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:15,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357586615] [2022-01-28 14:37:15,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:15,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:15,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:15,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:15,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:15,891 INFO L87 Difference]: Start difference. First operand 1338 states and 5253 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:15,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:15,969 INFO L93 Difference]: Finished difference Result 2755 states and 10091 transitions. [2022-01-28 14:37:15,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:15,970 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:15,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:15,975 INFO L225 Difference]: With dead ends: 2755 [2022-01-28 14:37:15,975 INFO L226 Difference]: Without dead ends: 2596 [2022-01-28 14:37:15,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:15,976 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 112 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:15,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 148 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:15,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2596 states. [2022-01-28 14:37:15,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2596 to 1354. [2022-01-28 14:37:15,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1353 states have (on average 3.917960088691796) internal successors, (5301), 1353 states have internal predecessors, (5301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:16,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 5301 transitions. [2022-01-28 14:37:16,000 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 5301 transitions. Word has length 25 [2022-01-28 14:37:16,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:16,000 INFO L470 AbstractCegarLoop]: Abstraction has 1354 states and 5301 transitions. [2022-01-28 14:37:16,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:16,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 5301 transitions. [2022-01-28 14:37:16,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:16,003 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:16,003 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:16,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable415 [2022-01-28 14:37:16,003 INFO L402 AbstractCegarLoop]: === Iteration 417 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:16,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:16,004 INFO L85 PathProgramCache]: Analyzing trace with hash 461058583, now seen corresponding path program 412 times [2022-01-28 14:37:16,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:16,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065484785] [2022-01-28 14:37:16,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:16,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:16,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:16,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:16,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:16,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065484785] [2022-01-28 14:37:16,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065484785] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:16,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:16,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:16,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696243900] [2022-01-28 14:37:16,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:16,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:16,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:16,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:16,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:16,084 INFO L87 Difference]: Start difference. First operand 1354 states and 5301 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:16,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:16,161 INFO L93 Difference]: Finished difference Result 2779 states and 10167 transitions. [2022-01-28 14:37:16,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:16,161 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:16,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:16,166 INFO L225 Difference]: With dead ends: 2779 [2022-01-28 14:37:16,167 INFO L226 Difference]: Without dead ends: 2580 [2022-01-28 14:37:16,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:16,167 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 101 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:16,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 140 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:16,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2580 states. [2022-01-28 14:37:16,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2580 to 1338. [2022-01-28 14:37:16,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1338 states, 1337 states have (on average 3.9229618548990275) internal successors, (5245), 1337 states have internal predecessors, (5245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:16,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 5245 transitions. [2022-01-28 14:37:16,194 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 5245 transitions. Word has length 25 [2022-01-28 14:37:16,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:16,194 INFO L470 AbstractCegarLoop]: Abstraction has 1338 states and 5245 transitions. [2022-01-28 14:37:16,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:16,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 5245 transitions. [2022-01-28 14:37:16,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:16,196 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:16,197 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:16,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable416 [2022-01-28 14:37:16,197 INFO L402 AbstractCegarLoop]: === Iteration 418 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:16,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:16,197 INFO L85 PathProgramCache]: Analyzing trace with hash -2145662441, now seen corresponding path program 413 times [2022-01-28 14:37:16,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:16,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747321860] [2022-01-28 14:37:16,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:16,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:16,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:16,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:16,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:16,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747321860] [2022-01-28 14:37:16,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747321860] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:16,308 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:16,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:16,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659512893] [2022-01-28 14:37:16,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:16,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:16,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:16,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:16,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:16,309 INFO L87 Difference]: Start difference. First operand 1338 states and 5245 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:16,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:16,396 INFO L93 Difference]: Finished difference Result 2870 states and 10514 transitions. [2022-01-28 14:37:16,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:16,396 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:16,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:16,402 INFO L225 Difference]: With dead ends: 2870 [2022-01-28 14:37:16,403 INFO L226 Difference]: Without dead ends: 2687 [2022-01-28 14:37:16,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:16,403 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 102 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:16,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 160 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:16,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2687 states. [2022-01-28 14:37:16,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2687 to 1382. [2022-01-28 14:37:16,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1382 states, 1381 states have (on average 3.9080376538740045) internal successors, (5397), 1381 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:16,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 5397 transitions. [2022-01-28 14:37:16,430 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 5397 transitions. Word has length 25 [2022-01-28 14:37:16,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:16,430 INFO L470 AbstractCegarLoop]: Abstraction has 1382 states and 5397 transitions. [2022-01-28 14:37:16,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:16,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 5397 transitions. [2022-01-28 14:37:16,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:16,432 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:16,432 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:16,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable417 [2022-01-28 14:37:16,432 INFO L402 AbstractCegarLoop]: === Iteration 419 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:16,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:16,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1144972917, now seen corresponding path program 414 times [2022-01-28 14:37:16,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:16,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117018360] [2022-01-28 14:37:16,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:16,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:16,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:16,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:16,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:16,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117018360] [2022-01-28 14:37:16,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117018360] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:16,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:16,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:16,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487657790] [2022-01-28 14:37:16,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:16,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:16,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:16,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:16,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:16,516 INFO L87 Difference]: Start difference. First operand 1382 states and 5397 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:16,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:16,594 INFO L93 Difference]: Finished difference Result 2909 states and 10617 transitions. [2022-01-28 14:37:16,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:16,595 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:16,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:16,602 INFO L225 Difference]: With dead ends: 2909 [2022-01-28 14:37:16,602 INFO L226 Difference]: Without dead ends: 2627 [2022-01-28 14:37:16,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:16,602 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 116 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:16,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 153 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:16,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2627 states. [2022-01-28 14:37:16,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2627 to 1322. [2022-01-28 14:37:16,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1322 states, 1321 states have (on average 3.9280847842543527) internal successors, (5189), 1321 states have internal predecessors, (5189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:16,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1322 states to 1322 states and 5189 transitions. [2022-01-28 14:37:16,634 INFO L78 Accepts]: Start accepts. Automaton has 1322 states and 5189 transitions. Word has length 25 [2022-01-28 14:37:16,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:16,634 INFO L470 AbstractCegarLoop]: Abstraction has 1322 states and 5189 transitions. [2022-01-28 14:37:16,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:16,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1322 states and 5189 transitions. [2022-01-28 14:37:16,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:16,636 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:16,636 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:16,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable418 [2022-01-28 14:37:16,636 INFO L402 AbstractCegarLoop]: === Iteration 420 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:16,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:16,636 INFO L85 PathProgramCache]: Analyzing trace with hash 232856245, now seen corresponding path program 415 times [2022-01-28 14:37:16,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:16,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686289942] [2022-01-28 14:37:16,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:16,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:16,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:16,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:16,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:16,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686289942] [2022-01-28 14:37:16,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686289942] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:16,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:16,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:16,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917014077] [2022-01-28 14:37:16,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:16,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:16,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:16,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:16,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:16,820 INFO L87 Difference]: Start difference. First operand 1322 states and 5189 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:16,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:16,967 INFO L93 Difference]: Finished difference Result 2750 states and 10050 transitions. [2022-01-28 14:37:16,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:16,967 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:16,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:16,973 INFO L225 Difference]: With dead ends: 2750 [2022-01-28 14:37:16,973 INFO L226 Difference]: Without dead ends: 2591 [2022-01-28 14:37:16,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:16,973 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 138 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:16,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 126 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:16,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2591 states. [2022-01-28 14:37:17,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2591 to 1322. [2022-01-28 14:37:17,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1322 states, 1321 states have (on average 3.915972747918244) internal successors, (5173), 1321 states have internal predecessors, (5173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:17,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1322 states to 1322 states and 5173 transitions. [2022-01-28 14:37:17,010 INFO L78 Accepts]: Start accepts. Automaton has 1322 states and 5173 transitions. Word has length 25 [2022-01-28 14:37:17,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:17,010 INFO L470 AbstractCegarLoop]: Abstraction has 1322 states and 5173 transitions. [2022-01-28 14:37:17,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:17,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1322 states and 5173 transitions. [2022-01-28 14:37:17,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:17,012 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:17,012 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:17,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable419 [2022-01-28 14:37:17,012 INFO L402 AbstractCegarLoop]: === Iteration 421 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:17,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:17,013 INFO L85 PathProgramCache]: Analyzing trace with hash -775441739, now seen corresponding path program 416 times [2022-01-28 14:37:17,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:17,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096967595] [2022-01-28 14:37:17,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:17,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:17,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:17,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:17,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096967595] [2022-01-28 14:37:17,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096967595] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:17,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:17,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:17,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951962900] [2022-01-28 14:37:17,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:17,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:17,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:17,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:17,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:17,124 INFO L87 Difference]: Start difference. First operand 1322 states and 5173 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:17,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:17,204 INFO L93 Difference]: Finished difference Result 2813 states and 10257 transitions. [2022-01-28 14:37:17,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:17,204 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:17,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:17,209 INFO L225 Difference]: With dead ends: 2813 [2022-01-28 14:37:17,209 INFO L226 Difference]: Without dead ends: 2559 [2022-01-28 14:37:17,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:17,209 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 110 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:17,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 150 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:17,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2559 states. [2022-01-28 14:37:17,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2559 to 1290. [2022-01-28 14:37:17,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1289 states have (on average 3.91388673390225) internal successors, (5045), 1289 states have internal predecessors, (5045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:17,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 5045 transitions. [2022-01-28 14:37:17,233 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 5045 transitions. Word has length 25 [2022-01-28 14:37:17,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:17,234 INFO L470 AbstractCegarLoop]: Abstraction has 1290 states and 5045 transitions. [2022-01-28 14:37:17,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:17,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 5045 transitions. [2022-01-28 14:37:17,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:17,236 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:17,236 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:17,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable420 [2022-01-28 14:37:17,236 INFO L402 AbstractCegarLoop]: === Iteration 422 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:17,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:17,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1466193385, now seen corresponding path program 417 times [2022-01-28 14:37:17,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:17,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423524509] [2022-01-28 14:37:17,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:17,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:17,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:17,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:17,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423524509] [2022-01-28 14:37:17,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423524509] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:17,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:17,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:17,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876339149] [2022-01-28 14:37:17,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:17,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:17,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:17,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:17,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:17,324 INFO L87 Difference]: Start difference. First operand 1290 states and 5045 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:17,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:17,406 INFO L93 Difference]: Finished difference Result 2655 states and 9699 transitions. [2022-01-28 14:37:17,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:17,407 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:17,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:17,412 INFO L225 Difference]: With dead ends: 2655 [2022-01-28 14:37:17,412 INFO L226 Difference]: Without dead ends: 2496 [2022-01-28 14:37:17,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:17,412 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 110 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:17,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 154 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:17,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2496 states. [2022-01-28 14:37:17,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2496 to 1306. [2022-01-28 14:37:17,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1306 states, 1305 states have (on average 3.9026819923371647) internal successors, (5093), 1305 states have internal predecessors, (5093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:17,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 5093 transitions. [2022-01-28 14:37:17,435 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 5093 transitions. Word has length 25 [2022-01-28 14:37:17,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:17,435 INFO L470 AbstractCegarLoop]: Abstraction has 1306 states and 5093 transitions. [2022-01-28 14:37:17,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:17,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 5093 transitions. [2022-01-28 14:37:17,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:17,437 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:17,437 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:17,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable421 [2022-01-28 14:37:17,437 INFO L402 AbstractCegarLoop]: === Iteration 423 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:17,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:17,438 INFO L85 PathProgramCache]: Analyzing trace with hash 886501911, now seen corresponding path program 418 times [2022-01-28 14:37:17,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:17,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961355411] [2022-01-28 14:37:17,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:17,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:17,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:17,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:17,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:17,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961355411] [2022-01-28 14:37:17,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961355411] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:17,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:17,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:17,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471660418] [2022-01-28 14:37:17,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:17,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:17,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:17,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:17,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:17,525 INFO L87 Difference]: Start difference. First operand 1306 states and 5093 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:17,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:17,614 INFO L93 Difference]: Finished difference Result 2543 states and 9362 transitions. [2022-01-28 14:37:17,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:17,614 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:17,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:17,619 INFO L225 Difference]: With dead ends: 2543 [2022-01-28 14:37:17,619 INFO L226 Difference]: Without dead ends: 2352 [2022-01-28 14:37:17,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:17,619 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 103 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:17,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 156 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:17,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2022-01-28 14:37:17,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 1290. [2022-01-28 14:37:17,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1289 states have (on average 3.9076803723816913) internal successors, (5037), 1289 states have internal predecessors, (5037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:17,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 5037 transitions. [2022-01-28 14:37:17,641 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 5037 transitions. Word has length 25 [2022-01-28 14:37:17,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:17,641 INFO L470 AbstractCegarLoop]: Abstraction has 1290 states and 5037 transitions. [2022-01-28 14:37:17,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:17,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 5037 transitions. [2022-01-28 14:37:17,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:17,643 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:17,643 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:17,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable422 [2022-01-28 14:37:17,643 INFO L402 AbstractCegarLoop]: === Iteration 424 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:17,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:17,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1720219113, now seen corresponding path program 419 times [2022-01-28 14:37:17,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:17,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541405462] [2022-01-28 14:37:17,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:17,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:17,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:17,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:17,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541405462] [2022-01-28 14:37:17,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541405462] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:17,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:17,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:17,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26453932] [2022-01-28 14:37:17,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:17,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:17,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:17,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:17,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:17,752 INFO L87 Difference]: Start difference. First operand 1290 states and 5037 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:17,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:17,847 INFO L93 Difference]: Finished difference Result 2790 states and 10190 transitions. [2022-01-28 14:37:17,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:17,847 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:17,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:17,853 INFO L225 Difference]: With dead ends: 2790 [2022-01-28 14:37:17,853 INFO L226 Difference]: Without dead ends: 2615 [2022-01-28 14:37:17,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:17,854 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 122 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:17,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 142 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:17,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2615 states. [2022-01-28 14:37:17,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2615 to 1330. [2022-01-28 14:37:17,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1330 states, 1329 states have (on average 3.8954100827689992) internal successors, (5177), 1329 states have internal predecessors, (5177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:17,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 5177 transitions. [2022-01-28 14:37:17,880 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 5177 transitions. Word has length 25 [2022-01-28 14:37:17,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:17,880 INFO L470 AbstractCegarLoop]: Abstraction has 1330 states and 5177 transitions. [2022-01-28 14:37:17,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:17,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 5177 transitions. [2022-01-28 14:37:17,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:17,882 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:17,883 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:17,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable423 [2022-01-28 14:37:17,883 INFO L402 AbstractCegarLoop]: === Iteration 425 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:17,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:17,883 INFO L85 PathProgramCache]: Analyzing trace with hash 919223797, now seen corresponding path program 420 times [2022-01-28 14:37:17,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:17,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059320950] [2022-01-28 14:37:17,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:17,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:17,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:17,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:17,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:17,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059320950] [2022-01-28 14:37:17,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059320950] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:17,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:17,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:17,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462881755] [2022-01-28 14:37:17,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:17,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:17,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:17,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:17,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:17,973 INFO L87 Difference]: Start difference. First operand 1330 states and 5177 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:18,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:18,068 INFO L93 Difference]: Finished difference Result 2742 states and 9990 transitions. [2022-01-28 14:37:18,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:18,068 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:18,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:18,073 INFO L225 Difference]: With dead ends: 2742 [2022-01-28 14:37:18,073 INFO L226 Difference]: Without dead ends: 2464 [2022-01-28 14:37:18,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:18,073 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 91 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:18,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 172 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:18,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2464 states. [2022-01-28 14:37:18,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2464 to 1274. [2022-01-28 14:37:18,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 1273 states have (on average 3.912804399057345) internal successors, (4981), 1273 states have internal predecessors, (4981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:18,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 4981 transitions. [2022-01-28 14:37:18,095 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 4981 transitions. Word has length 25 [2022-01-28 14:37:18,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:18,095 INFO L470 AbstractCegarLoop]: Abstraction has 1274 states and 4981 transitions. [2022-01-28 14:37:18,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:18,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 4981 transitions. [2022-01-28 14:37:18,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:18,097 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:18,097 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:18,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable424 [2022-01-28 14:37:18,097 INFO L402 AbstractCegarLoop]: === Iteration 426 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:18,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:18,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1970564649, now seen corresponding path program 421 times [2022-01-28 14:37:18,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:18,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28893525] [2022-01-28 14:37:18,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:18,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:18,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:18,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:18,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28893525] [2022-01-28 14:37:18,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28893525] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:18,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:18,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:18,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830214037] [2022-01-28 14:37:18,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:18,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:18,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:18,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:18,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:18,179 INFO L87 Difference]: Start difference. First operand 1274 states and 4981 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:18,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:18,266 INFO L93 Difference]: Finished difference Result 2600 states and 9504 transitions. [2022-01-28 14:37:18,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:18,267 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:18,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:18,271 INFO L225 Difference]: With dead ends: 2600 [2022-01-28 14:37:18,271 INFO L226 Difference]: Without dead ends: 2441 [2022-01-28 14:37:18,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:18,272 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 98 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:18,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 181 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:18,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2441 states. [2022-01-28 14:37:18,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2441 to 1298. [2022-01-28 14:37:18,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1298 states, 1297 states have (on average 3.905165767154973) internal successors, (5065), 1297 states have internal predecessors, (5065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:18,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 5065 transitions. [2022-01-28 14:37:18,293 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 5065 transitions. Word has length 25 [2022-01-28 14:37:18,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:18,293 INFO L470 AbstractCegarLoop]: Abstraction has 1298 states and 5065 transitions. [2022-01-28 14:37:18,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:18,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 5065 transitions. [2022-01-28 14:37:18,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:18,295 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:18,295 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:18,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable425 [2022-01-28 14:37:18,296 INFO L402 AbstractCegarLoop]: === Iteration 427 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:18,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:18,296 INFO L85 PathProgramCache]: Analyzing trace with hash -290068009, now seen corresponding path program 422 times [2022-01-28 14:37:18,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:18,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682982305] [2022-01-28 14:37:18,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:18,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:18,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:18,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:18,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682982305] [2022-01-28 14:37:18,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682982305] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:18,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:18,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:18,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470235924] [2022-01-28 14:37:18,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:18,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:18,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:18,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:18,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:18,409 INFO L87 Difference]: Start difference. First operand 1298 states and 5065 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:18,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:18,522 INFO L93 Difference]: Finished difference Result 2624 states and 9580 transitions. [2022-01-28 14:37:18,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:18,522 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:18,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:18,527 INFO L225 Difference]: With dead ends: 2624 [2022-01-28 14:37:18,527 INFO L226 Difference]: Without dead ends: 2425 [2022-01-28 14:37:18,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:18,528 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 120 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:18,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 138 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:18,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2022-01-28 14:37:18,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 1282. [2022-01-28 14:37:18,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 1281 states have (on average 3.910226385636222) internal successors, (5009), 1281 states have internal predecessors, (5009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:18,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 5009 transitions. [2022-01-28 14:37:18,550 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 5009 transitions. Word has length 25 [2022-01-28 14:37:18,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:18,550 INFO L470 AbstractCegarLoop]: Abstraction has 1282 states and 5009 transitions. [2022-01-28 14:37:18,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:18,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 5009 transitions. [2022-01-28 14:37:18,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:18,552 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:18,552 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:18,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable426 [2022-01-28 14:37:18,552 INFO L402 AbstractCegarLoop]: === Iteration 428 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:18,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:18,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1477605685, now seen corresponding path program 423 times [2022-01-28 14:37:18,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:18,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078884492] [2022-01-28 14:37:18,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:18,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:18,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:18,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:18,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:18,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078884492] [2022-01-28 14:37:18,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078884492] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:18,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:18,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:18,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906009820] [2022-01-28 14:37:18,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:18,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:18,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:18,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:18,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:18,696 INFO L87 Difference]: Start difference. First operand 1282 states and 5009 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:18,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:18,802 INFO L93 Difference]: Finished difference Result 2544 states and 9292 transitions. [2022-01-28 14:37:18,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:18,803 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:18,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:18,808 INFO L225 Difference]: With dead ends: 2544 [2022-01-28 14:37:18,808 INFO L226 Difference]: Without dead ends: 2385 [2022-01-28 14:37:18,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:18,808 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 107 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:18,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 161 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:18,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2385 states. [2022-01-28 14:37:18,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2385 to 1298. [2022-01-28 14:37:18,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1298 states, 1297 states have (on average 3.8989976869699308) internal successors, (5057), 1297 states have internal predecessors, (5057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:18,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 5057 transitions. [2022-01-28 14:37:18,831 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 5057 transitions. Word has length 25 [2022-01-28 14:37:18,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:18,831 INFO L470 AbstractCegarLoop]: Abstraction has 1298 states and 5057 transitions. [2022-01-28 14:37:18,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:18,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 5057 transitions. [2022-01-28 14:37:18,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:18,833 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:18,833 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:18,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable427 [2022-01-28 14:37:18,834 INFO L402 AbstractCegarLoop]: === Iteration 429 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:18,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:18,834 INFO L85 PathProgramCache]: Analyzing trace with hash 2119944663, now seen corresponding path program 424 times [2022-01-28 14:37:18,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:18,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134395019] [2022-01-28 14:37:18,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:18,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:18,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:18,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:18,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134395019] [2022-01-28 14:37:18,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134395019] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:18,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:18,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:18,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146351926] [2022-01-28 14:37:18,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:18,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:18,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:18,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:18,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:18,954 INFO L87 Difference]: Start difference. First operand 1298 states and 5057 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:19,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:19,064 INFO L93 Difference]: Finished difference Result 2432 states and 8955 transitions. [2022-01-28 14:37:19,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:19,064 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:19,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:19,068 INFO L225 Difference]: With dead ends: 2432 [2022-01-28 14:37:19,068 INFO L226 Difference]: Without dead ends: 2241 [2022-01-28 14:37:19,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:19,069 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 92 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:19,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 160 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:19,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2241 states. [2022-01-28 14:37:19,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2241 to 1282. [2022-01-28 14:37:19,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 1281 states have (on average 3.9039812646370025) internal successors, (5001), 1281 states have internal predecessors, (5001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:19,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 5001 transitions. [2022-01-28 14:37:19,089 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 5001 transitions. Word has length 25 [2022-01-28 14:37:19,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:19,089 INFO L470 AbstractCegarLoop]: Abstraction has 1282 states and 5001 transitions. [2022-01-28 14:37:19,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:19,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 5001 transitions. [2022-01-28 14:37:19,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:19,091 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:19,091 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:19,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable428 [2022-01-28 14:37:19,091 INFO L402 AbstractCegarLoop]: === Iteration 430 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:19,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:19,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1497313751, now seen corresponding path program 425 times [2022-01-28 14:37:19,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:19,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727107824] [2022-01-28 14:37:19,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:19,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:19,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:19,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:19,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727107824] [2022-01-28 14:37:19,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727107824] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:19,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:19,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:19,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861197833] [2022-01-28 14:37:19,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:19,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:19,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:19,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:19,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:19,212 INFO L87 Difference]: Start difference. First operand 1282 states and 5001 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:19,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:19,331 INFO L93 Difference]: Finished difference Result 2448 states and 9027 transitions. [2022-01-28 14:37:19,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:19,331 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:19,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:19,336 INFO L225 Difference]: With dead ends: 2448 [2022-01-28 14:37:19,336 INFO L226 Difference]: Without dead ends: 2265 [2022-01-28 14:37:19,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:19,337 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 92 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:19,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 163 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:19,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2265 states. [2022-01-28 14:37:19,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2265 to 1306. [2022-01-28 14:37:19,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1306 states, 1305 states have (on average 3.8904214559386974) internal successors, (5077), 1305 states have internal predecessors, (5077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:19,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 5077 transitions. [2022-01-28 14:37:19,360 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 5077 transitions. Word has length 25 [2022-01-28 14:37:19,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:19,361 INFO L470 AbstractCegarLoop]: Abstraction has 1306 states and 5077 transitions. [2022-01-28 14:37:19,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:19,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 5077 transitions. [2022-01-28 14:37:19,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:19,362 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:19,362 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:19,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable429 [2022-01-28 14:37:19,363 INFO L402 AbstractCegarLoop]: === Iteration 431 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:19,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:19,363 INFO L85 PathProgramCache]: Analyzing trace with hash -546023243, now seen corresponding path program 426 times [2022-01-28 14:37:19,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:19,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857212118] [2022-01-28 14:37:19,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:19,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:19,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:19,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:19,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:19,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857212118] [2022-01-28 14:37:19,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857212118] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:19,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:19,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:19,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465831078] [2022-01-28 14:37:19,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:19,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:19,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:19,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:19,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:19,483 INFO L87 Difference]: Start difference. First operand 1306 states and 5077 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:19,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:19,587 INFO L93 Difference]: Finished difference Result 2264 states and 8414 transitions. [2022-01-28 14:37:19,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:19,588 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:19,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:19,592 INFO L225 Difference]: With dead ends: 2264 [2022-01-28 14:37:19,592 INFO L226 Difference]: Without dead ends: 2057 [2022-01-28 14:37:19,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:19,592 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 76 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:19,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 150 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:19,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2057 states. [2022-01-28 14:37:19,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2057 to 1274. [2022-01-28 14:37:19,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 1273 states have (on average 3.9096622152395915) internal successors, (4977), 1273 states have internal predecessors, (4977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:19,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 4977 transitions. [2022-01-28 14:37:19,612 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 4977 transitions. Word has length 25 [2022-01-28 14:37:19,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:19,612 INFO L470 AbstractCegarLoop]: Abstraction has 1274 states and 4977 transitions. [2022-01-28 14:37:19,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:19,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 4977 transitions. [2022-01-28 14:37:19,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:19,614 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:19,614 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:19,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable430 [2022-01-28 14:37:19,614 INFO L402 AbstractCegarLoop]: === Iteration 432 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:19,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:19,615 INFO L85 PathProgramCache]: Analyzing trace with hash 404343255, now seen corresponding path program 427 times [2022-01-28 14:37:19,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:19,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254300085] [2022-01-28 14:37:19,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:19,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:19,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:19,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:19,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:19,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254300085] [2022-01-28 14:37:19,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254300085] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:19,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:19,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:19,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109363866] [2022-01-28 14:37:19,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:19,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:19,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:19,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:19,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:19,739 INFO L87 Difference]: Start difference. First operand 1274 states and 4977 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:19,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:19,846 INFO L93 Difference]: Finished difference Result 2823 states and 10363 transitions. [2022-01-28 14:37:19,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:19,846 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:19,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:19,852 INFO L225 Difference]: With dead ends: 2823 [2022-01-28 14:37:19,852 INFO L226 Difference]: Without dead ends: 2640 [2022-01-28 14:37:19,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:19,852 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 113 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:19,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 140 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:19,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2022-01-28 14:37:19,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 1318. [2022-01-28 14:37:19,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1318 states, 1317 states have (on average 3.906605922551253) internal successors, (5145), 1317 states have internal predecessors, (5145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:19,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1318 states to 1318 states and 5145 transitions. [2022-01-28 14:37:19,876 INFO L78 Accepts]: Start accepts. Automaton has 1318 states and 5145 transitions. Word has length 25 [2022-01-28 14:37:19,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:19,876 INFO L470 AbstractCegarLoop]: Abstraction has 1318 states and 5145 transitions. [2022-01-28 14:37:19,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:19,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1318 states and 5145 transitions. [2022-01-28 14:37:19,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:19,878 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:19,878 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:19,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable431 [2022-01-28 14:37:19,878 INFO L402 AbstractCegarLoop]: === Iteration 433 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:19,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:19,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1638993739, now seen corresponding path program 428 times [2022-01-28 14:37:19,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:19,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217163672] [2022-01-28 14:37:19,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:19,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:19,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:20,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:20,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217163672] [2022-01-28 14:37:20,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217163672] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:20,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:20,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:20,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844377565] [2022-01-28 14:37:20,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:20,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:20,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:20,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:20,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:20,000 INFO L87 Difference]: Start difference. First operand 1318 states and 5145 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:20,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:20,111 INFO L93 Difference]: Finished difference Result 2815 states and 10311 transitions. [2022-01-28 14:37:20,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:20,112 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:20,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:20,117 INFO L225 Difference]: With dead ends: 2815 [2022-01-28 14:37:20,117 INFO L226 Difference]: Without dead ends: 2616 [2022-01-28 14:37:20,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:20,117 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 122 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:20,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 141 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:20,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2616 states. [2022-01-28 14:37:20,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2616 to 1294. [2022-01-28 14:37:20,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 1293 states have (on average 3.9110595514307813) internal successors, (5057), 1293 states have internal predecessors, (5057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:20,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 5057 transitions. [2022-01-28 14:37:20,164 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 5057 transitions. Word has length 25 [2022-01-28 14:37:20,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:20,164 INFO L470 AbstractCegarLoop]: Abstraction has 1294 states and 5057 transitions. [2022-01-28 14:37:20,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:20,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 5057 transitions. [2022-01-28 14:37:20,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:20,166 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:20,166 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:20,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable432 [2022-01-28 14:37:20,166 INFO L402 AbstractCegarLoop]: === Iteration 434 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:20,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:20,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1416692171, now seen corresponding path program 429 times [2022-01-28 14:37:20,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:20,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787775913] [2022-01-28 14:37:20,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:20,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:20,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:20,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:20,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:20,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787775913] [2022-01-28 14:37:20,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787775913] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:20,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:20,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:20,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435765268] [2022-01-28 14:37:20,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:20,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:20,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:20,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:20,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:20,308 INFO L87 Difference]: Start difference. First operand 1294 states and 5057 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:20,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:20,416 INFO L93 Difference]: Finished difference Result 2751 states and 10075 transitions. [2022-01-28 14:37:20,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:20,417 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:20,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:20,422 INFO L225 Difference]: With dead ends: 2751 [2022-01-28 14:37:20,422 INFO L226 Difference]: Without dead ends: 2568 [2022-01-28 14:37:20,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:20,422 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 105 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:20,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 147 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:20,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2022-01-28 14:37:20,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 1338. [2022-01-28 14:37:20,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1338 states, 1337 states have (on average 3.8960359012715036) internal successors, (5209), 1337 states have internal predecessors, (5209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:20,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 5209 transitions. [2022-01-28 14:37:20,446 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 5209 transitions. Word has length 25 [2022-01-28 14:37:20,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:20,446 INFO L470 AbstractCegarLoop]: Abstraction has 1338 states and 5209 transitions. [2022-01-28 14:37:20,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:20,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 5209 transitions. [2022-01-28 14:37:20,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:20,448 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:20,448 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:20,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable433 [2022-01-28 14:37:20,448 INFO L402 AbstractCegarLoop]: === Iteration 435 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:20,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:20,448 INFO L85 PathProgramCache]: Analyzing trace with hash -699124171, now seen corresponding path program 430 times [2022-01-28 14:37:20,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:20,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087335662] [2022-01-28 14:37:20,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:20,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:20,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:20,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:20,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:20,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087335662] [2022-01-28 14:37:20,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087335662] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:20,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:20,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:20,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898178008] [2022-01-28 14:37:20,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:20,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:20,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:20,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:20,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:20,569 INFO L87 Difference]: Start difference. First operand 1338 states and 5209 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:20,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:20,667 INFO L93 Difference]: Finished difference Result 2790 states and 10178 transitions. [2022-01-28 14:37:20,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:20,667 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:20,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:20,673 INFO L225 Difference]: With dead ends: 2790 [2022-01-28 14:37:20,673 INFO L226 Difference]: Without dead ends: 2524 [2022-01-28 14:37:20,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:20,673 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 102 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:20,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 147 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:20,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2524 states. [2022-01-28 14:37:20,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2524 to 1294. [2022-01-28 14:37:20,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 1293 states have (on average 3.8955916473317864) internal successors, (5037), 1293 states have internal predecessors, (5037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:20,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 5037 transitions. [2022-01-28 14:37:20,699 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 5037 transitions. Word has length 25 [2022-01-28 14:37:20,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:20,699 INFO L470 AbstractCegarLoop]: Abstraction has 1294 states and 5037 transitions. [2022-01-28 14:37:20,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:20,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 5037 transitions. [2022-01-28 14:37:20,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:20,701 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:20,701 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:20,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable434 [2022-01-28 14:37:20,701 INFO L402 AbstractCegarLoop]: === Iteration 436 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:20,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:20,702 INFO L85 PathProgramCache]: Analyzing trace with hash -434344557, now seen corresponding path program 431 times [2022-01-28 14:37:20,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:20,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597083986] [2022-01-28 14:37:20,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:20,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:20,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:20,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:20,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597083986] [2022-01-28 14:37:20,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597083986] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:20,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:20,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:20,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043726911] [2022-01-28 14:37:20,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:20,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:20,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:20,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:20,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:20,822 INFO L87 Difference]: Start difference. First operand 1294 states and 5037 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:20,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:20,934 INFO L93 Difference]: Finished difference Result 2691 states and 9819 transitions. [2022-01-28 14:37:20,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:20,934 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:20,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:20,940 INFO L225 Difference]: With dead ends: 2691 [2022-01-28 14:37:20,940 INFO L226 Difference]: Without dead ends: 2516 [2022-01-28 14:37:20,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:20,940 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 102 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:20,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 149 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:20,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2516 states. [2022-01-28 14:37:20,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2516 to 1334. [2022-01-28 14:37:20,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1334 states, 1333 states have (on average 3.883720930232558) internal successors, (5177), 1333 states have internal predecessors, (5177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:20,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 5177 transitions. [2022-01-28 14:37:20,965 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 5177 transitions. Word has length 25 [2022-01-28 14:37:20,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:20,965 INFO L470 AbstractCegarLoop]: Abstraction has 1334 states and 5177 transitions. [2022-01-28 14:37:20,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:20,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 5177 transitions. [2022-01-28 14:37:20,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:20,967 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:20,967 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:20,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable435 [2022-01-28 14:37:20,967 INFO L402 AbstractCegarLoop]: === Iteration 437 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:20,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:20,967 INFO L85 PathProgramCache]: Analyzing trace with hash -215992971, now seen corresponding path program 432 times [2022-01-28 14:37:20,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:20,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75253459] [2022-01-28 14:37:20,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:20,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:20,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:21,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:21,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:21,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75253459] [2022-01-28 14:37:21,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75253459] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:21,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:21,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:21,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501163091] [2022-01-28 14:37:21,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:21,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:21,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:21,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:21,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:21,090 INFO L87 Difference]: Start difference. First operand 1334 states and 5177 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:21,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:21,183 INFO L93 Difference]: Finished difference Result 2643 states and 9619 transitions. [2022-01-28 14:37:21,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:21,184 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:21,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:21,189 INFO L225 Difference]: With dead ends: 2643 [2022-01-28 14:37:21,189 INFO L226 Difference]: Without dead ends: 2353 [2022-01-28 14:37:21,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:21,189 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 110 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:21,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 130 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:21,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2353 states. [2022-01-28 14:37:21,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2353 to 1266. [2022-01-28 14:37:21,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1266 states, 1265 states have (on average 3.915415019762846) internal successors, (4953), 1265 states have internal predecessors, (4953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:21,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 4953 transitions. [2022-01-28 14:37:21,212 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 4953 transitions. Word has length 25 [2022-01-28 14:37:21,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:21,212 INFO L470 AbstractCegarLoop]: Abstraction has 1266 states and 4953 transitions. [2022-01-28 14:37:21,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:21,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 4953 transitions. [2022-01-28 14:37:21,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:21,214 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:21,214 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:21,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable436 [2022-01-28 14:37:21,214 INFO L402 AbstractCegarLoop]: === Iteration 438 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:21,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:21,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1690129657, now seen corresponding path program 433 times [2022-01-28 14:37:21,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:21,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71566692] [2022-01-28 14:37:21,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:21,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:21,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:21,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:21,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:21,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71566692] [2022-01-28 14:37:21,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71566692] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:21,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:21,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:21,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994341997] [2022-01-28 14:37:21,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:21,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:21,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:21,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:21,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:21,335 INFO L87 Difference]: Start difference. First operand 1266 states and 4953 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:21,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:21,425 INFO L93 Difference]: Finished difference Result 2549 states and 9317 transitions. [2022-01-28 14:37:21,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:21,425 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:21,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:21,430 INFO L225 Difference]: With dead ends: 2549 [2022-01-28 14:37:21,430 INFO L226 Difference]: Without dead ends: 2390 [2022-01-28 14:37:21,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:21,430 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 109 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:21,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 160 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:21,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2390 states. [2022-01-28 14:37:21,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2390 to 1294. [2022-01-28 14:37:21,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 1293 states have (on average 3.9110595514307813) internal successors, (5057), 1293 states have internal predecessors, (5057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:21,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 5057 transitions. [2022-01-28 14:37:21,452 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 5057 transitions. Word has length 25 [2022-01-28 14:37:21,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:21,452 INFO L470 AbstractCegarLoop]: Abstraction has 1294 states and 5057 transitions. [2022-01-28 14:37:21,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:21,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 5057 transitions. [2022-01-28 14:37:21,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:21,454 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:21,454 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:21,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable437 [2022-01-28 14:37:21,454 INFO L402 AbstractCegarLoop]: === Iteration 439 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:21,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:21,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1596539655, now seen corresponding path program 434 times [2022-01-28 14:37:21,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:21,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697232131] [2022-01-28 14:37:21,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:21,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:21,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:21,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:21,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:21,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697232131] [2022-01-28 14:37:21,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697232131] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:21,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:21,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:21,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008191296] [2022-01-28 14:37:21,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:21,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:21,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:21,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:21,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:21,539 INFO L87 Difference]: Start difference. First operand 1294 states and 5057 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:21,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:21,622 INFO L93 Difference]: Finished difference Result 2577 states and 9405 transitions. [2022-01-28 14:37:21,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:21,622 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:21,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:21,627 INFO L225 Difference]: With dead ends: 2577 [2022-01-28 14:37:21,627 INFO L226 Difference]: Without dead ends: 2374 [2022-01-28 14:37:21,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:21,627 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 109 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:21,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 155 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:21,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2374 states. [2022-01-28 14:37:21,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2374 to 1278. [2022-01-28 14:37:21,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1278 states, 1277 states have (on average 3.9162098668754894) internal successors, (5001), 1277 states have internal predecessors, (5001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:21,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 5001 transitions. [2022-01-28 14:37:21,650 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 5001 transitions. Word has length 25 [2022-01-28 14:37:21,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:21,650 INFO L470 AbstractCegarLoop]: Abstraction has 1278 states and 5001 transitions. [2022-01-28 14:37:21,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:21,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 5001 transitions. [2022-01-28 14:37:21,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:21,652 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:21,652 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:21,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable438 [2022-01-28 14:37:21,652 INFO L402 AbstractCegarLoop]: === Iteration 440 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:21,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:21,652 INFO L85 PathProgramCache]: Analyzing trace with hash 843332695, now seen corresponding path program 435 times [2022-01-28 14:37:21,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:21,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880822373] [2022-01-28 14:37:21,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:21,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:21,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:21,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:21,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:21,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880822373] [2022-01-28 14:37:21,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880822373] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:21,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:21,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:21,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702945762] [2022-01-28 14:37:21,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:21,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:21,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:21,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:21,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:21,729 INFO L87 Difference]: Start difference. First operand 1278 states and 5001 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:21,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:21,814 INFO L93 Difference]: Finished difference Result 2545 states and 9297 transitions. [2022-01-28 14:37:21,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:21,814 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:21,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:21,820 INFO L225 Difference]: With dead ends: 2545 [2022-01-28 14:37:21,820 INFO L226 Difference]: Without dead ends: 2386 [2022-01-28 14:37:21,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:21,820 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 105 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:21,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 157 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:21,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2386 states. [2022-01-28 14:37:21,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2386 to 1294. [2022-01-28 14:37:21,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 1293 states have (on average 3.9048723897911835) internal successors, (5049), 1293 states have internal predecessors, (5049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:21,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 5049 transitions. [2022-01-28 14:37:21,841 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 5049 transitions. Word has length 25 [2022-01-28 14:37:21,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:21,841 INFO L470 AbstractCegarLoop]: Abstraction has 1294 states and 5049 transitions. [2022-01-28 14:37:21,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:21,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 5049 transitions. [2022-01-28 14:37:21,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:21,843 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:21,843 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:21,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable439 [2022-01-28 14:37:21,843 INFO L402 AbstractCegarLoop]: === Iteration 441 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:21,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:21,843 INFO L85 PathProgramCache]: Analyzing trace with hash 813473017, now seen corresponding path program 436 times [2022-01-28 14:37:21,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:21,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98546265] [2022-01-28 14:37:21,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:21,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:21,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:21,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:21,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:21,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98546265] [2022-01-28 14:37:21,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98546265] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:21,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:21,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:21,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858008875] [2022-01-28 14:37:21,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:21,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:21,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:21,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:21,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:21,925 INFO L87 Difference]: Start difference. First operand 1294 states and 5049 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:22,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:22,006 INFO L93 Difference]: Finished difference Result 2569 states and 9373 transitions. [2022-01-28 14:37:22,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:22,006 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:22,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:22,011 INFO L225 Difference]: With dead ends: 2569 [2022-01-28 14:37:22,011 INFO L226 Difference]: Without dead ends: 2370 [2022-01-28 14:37:22,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:22,011 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 103 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:22,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 156 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:22,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2370 states. [2022-01-28 14:37:22,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2370 to 1278. [2022-01-28 14:37:22,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1278 states, 1277 states have (on average 3.9099451840250588) internal successors, (4993), 1277 states have internal predecessors, (4993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:22,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 4993 transitions. [2022-01-28 14:37:22,033 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 4993 transitions. Word has length 25 [2022-01-28 14:37:22,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:22,033 INFO L470 AbstractCegarLoop]: Abstraction has 1278 states and 4993 transitions. [2022-01-28 14:37:22,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:22,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 4993 transitions. [2022-01-28 14:37:22,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:22,035 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:22,035 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:22,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable440 [2022-01-28 14:37:22,035 INFO L402 AbstractCegarLoop]: === Iteration 442 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:22,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:22,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1546971911, now seen corresponding path program 437 times [2022-01-28 14:37:22,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:22,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568720632] [2022-01-28 14:37:22,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:22,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:22,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:22,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:22,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:22,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568720632] [2022-01-28 14:37:22,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568720632] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:22,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:22,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:22,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546664495] [2022-01-28 14:37:22,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:22,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:22,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:22,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:22,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:22,112 INFO L87 Difference]: Start difference. First operand 1278 states and 4993 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:22,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:22,185 INFO L93 Difference]: Finished difference Result 2613 states and 9549 transitions. [2022-01-28 14:37:22,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:22,185 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:22,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:22,190 INFO L225 Difference]: With dead ends: 2613 [2022-01-28 14:37:22,190 INFO L226 Difference]: Without dead ends: 2426 [2022-01-28 14:37:22,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:22,190 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 110 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:22,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 144 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:22,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2426 states. [2022-01-28 14:37:22,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2426 to 1306. [2022-01-28 14:37:22,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1306 states, 1305 states have (on average 3.893486590038314) internal successors, (5081), 1305 states have internal predecessors, (5081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:22,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 5081 transitions. [2022-01-28 14:37:22,212 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 5081 transitions. Word has length 25 [2022-01-28 14:37:22,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:22,212 INFO L470 AbstractCegarLoop]: Abstraction has 1306 states and 5081 transitions. [2022-01-28 14:37:22,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:22,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 5081 transitions. [2022-01-28 14:37:22,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:22,214 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:22,214 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:22,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable441 [2022-01-28 14:37:22,214 INFO L402 AbstractCegarLoop]: === Iteration 443 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:22,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:22,214 INFO L85 PathProgramCache]: Analyzing trace with hash 704658391, now seen corresponding path program 438 times [2022-01-28 14:37:22,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:22,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733911862] [2022-01-28 14:37:22,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:22,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:22,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:22,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:22,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:22,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733911862] [2022-01-28 14:37:22,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733911862] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:22,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:22,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:22,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42991664] [2022-01-28 14:37:22,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:22,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:22,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:22,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:22,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:22,292 INFO L87 Difference]: Start difference. First operand 1306 states and 5081 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:22,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:22,379 INFO L93 Difference]: Finished difference Result 2609 states and 9509 transitions. [2022-01-28 14:37:22,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:22,380 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:22,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:22,385 INFO L225 Difference]: With dead ends: 2609 [2022-01-28 14:37:22,385 INFO L226 Difference]: Without dead ends: 2390 [2022-01-28 14:37:22,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:22,385 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 102 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:22,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 158 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:22,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2390 states. [2022-01-28 14:37:22,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2390 to 1270. [2022-01-28 14:37:22,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 1269 states have (on average 3.9156816390858946) internal successors, (4969), 1269 states have internal predecessors, (4969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:22,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 4969 transitions. [2022-01-28 14:37:22,409 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 4969 transitions. Word has length 25 [2022-01-28 14:37:22,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:22,409 INFO L470 AbstractCegarLoop]: Abstraction has 1270 states and 4969 transitions. [2022-01-28 14:37:22,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:22,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 4969 transitions. [2022-01-28 14:37:22,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:22,411 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:22,411 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:22,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable442 [2022-01-28 14:37:22,411 INFO L402 AbstractCegarLoop]: === Iteration 444 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:22,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:22,411 INFO L85 PathProgramCache]: Analyzing trace with hash -332931881, now seen corresponding path program 439 times [2022-01-28 14:37:22,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:22,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441315365] [2022-01-28 14:37:22,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:22,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:22,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:22,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:22,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:22,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441315365] [2022-01-28 14:37:22,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441315365] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:22,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:22,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:22,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900406036] [2022-01-28 14:37:22,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:22,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:22,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:22,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:22,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:22,510 INFO L87 Difference]: Start difference. First operand 1270 states and 4969 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:22,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:22,590 INFO L93 Difference]: Finished difference Result 2513 states and 9169 transitions. [2022-01-28 14:37:22,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:22,590 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:22,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:22,595 INFO L225 Difference]: With dead ends: 2513 [2022-01-28 14:37:22,595 INFO L226 Difference]: Without dead ends: 2354 [2022-01-28 14:37:22,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:22,595 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 130 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:22,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 138 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:22,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2354 states. [2022-01-28 14:37:22,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2354 to 1294. [2022-01-28 14:37:22,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 1293 states have (on average 3.907965970610982) internal successors, (5053), 1293 states have internal predecessors, (5053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:22,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 5053 transitions. [2022-01-28 14:37:22,617 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 5053 transitions. Word has length 25 [2022-01-28 14:37:22,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:22,617 INFO L470 AbstractCegarLoop]: Abstraction has 1294 states and 5053 transitions. [2022-01-28 14:37:22,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:22,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 5053 transitions. [2022-01-28 14:37:22,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:22,619 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:22,619 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:22,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable443 [2022-01-28 14:37:22,619 INFO L402 AbstractCegarLoop]: === Iteration 445 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:22,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:22,619 INFO L85 PathProgramCache]: Analyzing trace with hash 675366103, now seen corresponding path program 440 times [2022-01-28 14:37:22,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:22,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127033568] [2022-01-28 14:37:22,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:22,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:22,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:22,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:22,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:22,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127033568] [2022-01-28 14:37:22,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127033568] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:22,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:22,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:22,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995694469] [2022-01-28 14:37:22,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:22,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:22,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:22,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:22,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:22,717 INFO L87 Difference]: Start difference. First operand 1294 states and 5053 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:22,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:22,813 INFO L93 Difference]: Finished difference Result 2541 states and 9257 transitions. [2022-01-28 14:37:22,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:22,813 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:22,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:22,817 INFO L225 Difference]: With dead ends: 2541 [2022-01-28 14:37:22,817 INFO L226 Difference]: Without dead ends: 2338 [2022-01-28 14:37:22,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:22,817 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 102 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:22,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 157 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:22,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2338 states. [2022-01-28 14:37:22,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2338 to 1278. [2022-01-28 14:37:22,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1278 states, 1277 states have (on average 3.913077525450274) internal successors, (4997), 1277 states have internal predecessors, (4997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:22,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 4997 transitions. [2022-01-28 14:37:22,839 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 4997 transitions. Word has length 25 [2022-01-28 14:37:22,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:22,839 INFO L470 AbstractCegarLoop]: Abstraction has 1278 states and 4997 transitions. [2022-01-28 14:37:22,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:22,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 4997 transitions. [2022-01-28 14:37:22,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:22,840 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:22,840 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:22,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable444 [2022-01-28 14:37:22,841 INFO L402 AbstractCegarLoop]: === Iteration 446 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:22,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:22,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1128958761, now seen corresponding path program 441 times [2022-01-28 14:37:22,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:22,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286257440] [2022-01-28 14:37:22,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:22,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:22,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:22,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:22,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286257440] [2022-01-28 14:37:22,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286257440] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:22,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:22,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:22,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282544189] [2022-01-28 14:37:22,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:22,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:22,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:22,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:22,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:22,960 INFO L87 Difference]: Start difference. First operand 1278 states and 4997 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:23,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:23,047 INFO L93 Difference]: Finished difference Result 2469 states and 9009 transitions. [2022-01-28 14:37:23,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:23,047 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:23,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:23,052 INFO L225 Difference]: With dead ends: 2469 [2022-01-28 14:37:23,052 INFO L226 Difference]: Without dead ends: 2310 [2022-01-28 14:37:23,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:23,053 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 104 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:23,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 160 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:23,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2310 states. [2022-01-28 14:37:23,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2310 to 1294. [2022-01-28 14:37:23,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 1293 states have (on average 3.9017788089713843) internal successors, (5045), 1293 states have internal predecessors, (5045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:23,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 5045 transitions. [2022-01-28 14:37:23,077 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 5045 transitions. Word has length 25 [2022-01-28 14:37:23,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:23,077 INFO L470 AbstractCegarLoop]: Abstraction has 1294 states and 5045 transitions. [2022-01-28 14:37:23,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:23,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 5045 transitions. [2022-01-28 14:37:23,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:23,079 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:23,079 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:23,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable445 [2022-01-28 14:37:23,079 INFO L402 AbstractCegarLoop]: === Iteration 447 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:23,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:23,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1774490375, now seen corresponding path program 442 times [2022-01-28 14:37:23,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:23,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982502657] [2022-01-28 14:37:23,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:23,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:23,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:23,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:23,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:23,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982502657] [2022-01-28 14:37:23,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982502657] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:23,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:23,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:23,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151603503] [2022-01-28 14:37:23,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:23,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:23,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:23,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:23,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:23,164 INFO L87 Difference]: Start difference. First operand 1294 states and 5045 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:23,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:23,260 INFO L93 Difference]: Finished difference Result 2357 states and 8672 transitions. [2022-01-28 14:37:23,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:23,261 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:23,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:23,265 INFO L225 Difference]: With dead ends: 2357 [2022-01-28 14:37:23,265 INFO L226 Difference]: Without dead ends: 2166 [2022-01-28 14:37:23,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:23,266 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 86 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:23,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 178 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:23,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2166 states. [2022-01-28 14:37:23,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2166 to 1278. [2022-01-28 14:37:23,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1278 states, 1277 states have (on average 3.906812842599843) internal successors, (4989), 1277 states have internal predecessors, (4989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:23,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 4989 transitions. [2022-01-28 14:37:23,287 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 4989 transitions. Word has length 25 [2022-01-28 14:37:23,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:23,287 INFO L470 AbstractCegarLoop]: Abstraction has 1278 states and 4989 transitions. [2022-01-28 14:37:23,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:23,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 4989 transitions. [2022-01-28 14:37:23,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:23,289 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:23,289 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:23,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable446 [2022-01-28 14:37:23,290 INFO L402 AbstractCegarLoop]: === Iteration 448 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:23,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:23,290 INFO L85 PathProgramCache]: Analyzing trace with hash -512166663, now seen corresponding path program 443 times [2022-01-28 14:37:23,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:23,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276039560] [2022-01-28 14:37:23,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:23,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:23,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:23,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:23,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:23,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276039560] [2022-01-28 14:37:23,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276039560] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:23,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:23,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:23,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804604487] [2022-01-28 14:37:23,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:23,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:23,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:23,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:23,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:23,382 INFO L87 Difference]: Start difference. First operand 1278 states and 4989 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:23,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:23,462 INFO L93 Difference]: Finished difference Result 2505 states and 9141 transitions. [2022-01-28 14:37:23,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:23,462 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:23,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:23,467 INFO L225 Difference]: With dead ends: 2505 [2022-01-28 14:37:23,467 INFO L226 Difference]: Without dead ends: 2318 [2022-01-28 14:37:23,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:23,467 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 96 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:23,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 174 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:23,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318 states. [2022-01-28 14:37:23,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318 to 1302. [2022-01-28 14:37:23,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1302 states, 1301 states have (on average 3.8931591083781707) internal successors, (5065), 1301 states have internal predecessors, (5065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:23,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1302 states to 1302 states and 5065 transitions. [2022-01-28 14:37:23,489 INFO L78 Accepts]: Start accepts. Automaton has 1302 states and 5065 transitions. Word has length 25 [2022-01-28 14:37:23,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:23,489 INFO L470 AbstractCegarLoop]: Abstraction has 1302 states and 5065 transitions. [2022-01-28 14:37:23,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:23,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1302 states and 5065 transitions. [2022-01-28 14:37:23,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:23,491 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:23,491 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:23,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable447 [2022-01-28 14:37:23,491 INFO L402 AbstractCegarLoop]: === Iteration 449 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:23,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:23,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1904311209, now seen corresponding path program 444 times [2022-01-28 14:37:23,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:23,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055791031] [2022-01-28 14:37:23,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:23,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:23,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:23,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:23,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:23,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055791031] [2022-01-28 14:37:23,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055791031] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:23,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:23,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:23,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969833550] [2022-01-28 14:37:23,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:23,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:23,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:23,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:23,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:23,609 INFO L87 Difference]: Start difference. First operand 1302 states and 5065 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:23,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:23,717 INFO L93 Difference]: Finished difference Result 2365 states and 8692 transitions. [2022-01-28 14:37:23,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:23,717 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:23,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:23,722 INFO L225 Difference]: With dead ends: 2365 [2022-01-28 14:37:23,722 INFO L226 Difference]: Without dead ends: 2158 [2022-01-28 14:37:23,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:23,722 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 91 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:23,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 165 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:23,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2158 states. [2022-01-28 14:37:23,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2158 to 1270. [2022-01-28 14:37:23,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 1269 states have (on average 3.9125295508274234) internal successors, (4965), 1269 states have internal predecessors, (4965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:23,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 4965 transitions. [2022-01-28 14:37:23,743 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 4965 transitions. Word has length 25 [2022-01-28 14:37:23,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:23,743 INFO L470 AbstractCegarLoop]: Abstraction has 1270 states and 4965 transitions. [2022-01-28 14:37:23,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:23,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 4965 transitions. [2022-01-28 14:37:23,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:23,745 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:23,745 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:23,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable448 [2022-01-28 14:37:23,745 INFO L402 AbstractCegarLoop]: === Iteration 450 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:23,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:23,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1189679947, now seen corresponding path program 445 times [2022-01-28 14:37:23,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:23,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488634788] [2022-01-28 14:37:23,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:23,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:23,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:23,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:23,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:23,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488634788] [2022-01-28 14:37:23,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488634788] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:23,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:23,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:23,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838916058] [2022-01-28 14:37:23,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:23,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:23,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:23,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:23,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:23,853 INFO L87 Difference]: Start difference. First operand 1270 states and 4965 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:23,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:23,951 INFO L93 Difference]: Finished difference Result 2449 states and 8929 transitions. [2022-01-28 14:37:23,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:23,951 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:23,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:23,956 INFO L225 Difference]: With dead ends: 2449 [2022-01-28 14:37:23,956 INFO L226 Difference]: Without dead ends: 2290 [2022-01-28 14:37:23,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:23,956 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 114 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:23,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 151 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:23,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2290 states. [2022-01-28 14:37:23,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2290 to 1294. [2022-01-28 14:37:23,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 1293 states have (on average 3.9048723897911835) internal successors, (5049), 1293 states have internal predecessors, (5049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:23,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 5049 transitions. [2022-01-28 14:37:23,978 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 5049 transitions. Word has length 25 [2022-01-28 14:37:23,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:23,978 INFO L470 AbstractCegarLoop]: Abstraction has 1294 states and 5049 transitions. [2022-01-28 14:37:23,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:23,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 5049 transitions. [2022-01-28 14:37:23,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:23,980 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:23,980 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:23,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable449 [2022-01-28 14:37:23,980 INFO L402 AbstractCegarLoop]: === Iteration 451 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:23,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:23,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1219539625, now seen corresponding path program 446 times [2022-01-28 14:37:23,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:23,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565406729] [2022-01-28 14:37:23,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:23,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:23,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:24,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:24,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:24,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565406729] [2022-01-28 14:37:24,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565406729] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:24,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:24,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:24,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772950996] [2022-01-28 14:37:24,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:24,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:24,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:24,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:24,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:24,088 INFO L87 Difference]: Start difference. First operand 1294 states and 5049 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:24,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:24,259 INFO L93 Difference]: Finished difference Result 2473 states and 9005 transitions. [2022-01-28 14:37:24,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:24,259 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:24,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:24,263 INFO L225 Difference]: With dead ends: 2473 [2022-01-28 14:37:24,263 INFO L226 Difference]: Without dead ends: 2274 [2022-01-28 14:37:24,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:24,264 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 136 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:24,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 134 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:24,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2274 states. [2022-01-28 14:37:24,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2274 to 1278. [2022-01-28 14:37:24,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1278 states, 1277 states have (on average 3.9099451840250588) internal successors, (4993), 1277 states have internal predecessors, (4993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:24,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 4993 transitions. [2022-01-28 14:37:24,284 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 4993 transitions. Word has length 25 [2022-01-28 14:37:24,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:24,284 INFO L470 AbstractCegarLoop]: Abstraction has 1278 states and 4993 transitions. [2022-01-28 14:37:24,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:24,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 4993 transitions. [2022-01-28 14:37:24,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:24,286 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:24,286 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:24,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable450 [2022-01-28 14:37:24,286 INFO L402 AbstractCegarLoop]: === Iteration 452 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:24,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:24,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1670581993, now seen corresponding path program 447 times [2022-01-28 14:37:24,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:24,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713817787] [2022-01-28 14:37:24,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:24,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:24,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:24,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:24,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:24,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713817787] [2022-01-28 14:37:24,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713817787] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:24,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:24,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:24,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116385319] [2022-01-28 14:37:24,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:24,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:24,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:24,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:24,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:24,365 INFO L87 Difference]: Start difference. First operand 1278 states and 4993 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:24,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:24,437 INFO L93 Difference]: Finished difference Result 2393 states and 8717 transitions. [2022-01-28 14:37:24,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:24,437 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:24,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:24,442 INFO L225 Difference]: With dead ends: 2393 [2022-01-28 14:37:24,442 INFO L226 Difference]: Without dead ends: 2234 [2022-01-28 14:37:24,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:24,442 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 108 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:24,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 148 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:24,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2234 states. [2022-01-28 14:37:24,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2234 to 1294. [2022-01-28 14:37:24,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 1293 states have (on average 3.8986852281515856) internal successors, (5041), 1293 states have internal predecessors, (5041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:24,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 5041 transitions. [2022-01-28 14:37:24,464 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 5041 transitions. Word has length 25 [2022-01-28 14:37:24,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:24,464 INFO L470 AbstractCegarLoop]: Abstraction has 1294 states and 5041 transitions. [2022-01-28 14:37:24,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:24,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 5041 transitions. [2022-01-28 14:37:24,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:24,466 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:24,466 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:24,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable451 [2022-01-28 14:37:24,466 INFO L402 AbstractCegarLoop]: === Iteration 453 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:24,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:24,466 INFO L85 PathProgramCache]: Analyzing trace with hash 497415383, now seen corresponding path program 448 times [2022-01-28 14:37:24,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:24,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202819485] [2022-01-28 14:37:24,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:24,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:24,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:24,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:24,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:24,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202819485] [2022-01-28 14:37:24,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202819485] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:24,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:24,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:24,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505277758] [2022-01-28 14:37:24,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:24,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:24,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:24,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:24,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:24,562 INFO L87 Difference]: Start difference. First operand 1294 states and 5041 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:24,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:24,645 INFO L93 Difference]: Finished difference Result 2281 states and 8380 transitions. [2022-01-28 14:37:24,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:24,645 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:24,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:24,649 INFO L225 Difference]: With dead ends: 2281 [2022-01-28 14:37:24,649 INFO L226 Difference]: Without dead ends: 2090 [2022-01-28 14:37:24,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:24,649 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 104 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:24,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 142 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:24,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2022-01-28 14:37:24,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 1278. [2022-01-28 14:37:24,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1278 states, 1277 states have (on average 3.903680501174628) internal successors, (4985), 1277 states have internal predecessors, (4985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:24,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 4985 transitions. [2022-01-28 14:37:24,677 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 4985 transitions. Word has length 25 [2022-01-28 14:37:24,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:24,677 INFO L470 AbstractCegarLoop]: Abstraction has 1278 states and 4985 transitions. [2022-01-28 14:37:24,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:24,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 4985 transitions. [2022-01-28 14:37:24,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:24,679 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:24,679 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:24,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable452 [2022-01-28 14:37:24,679 INFO L402 AbstractCegarLoop]: === Iteration 454 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:24,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:24,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1194837241, now seen corresponding path program 449 times [2022-01-28 14:37:24,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:24,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370560728] [2022-01-28 14:37:24,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:24,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:24,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:24,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:24,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370560728] [2022-01-28 14:37:24,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370560728] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:24,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:24,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:24,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30407108] [2022-01-28 14:37:24,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:24,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:24,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:24,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:24,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:24,807 INFO L87 Difference]: Start difference. First operand 1278 states and 4985 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:24,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:24,883 INFO L93 Difference]: Finished difference Result 2297 states and 8452 transitions. [2022-01-28 14:37:24,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:24,884 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:24,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:24,887 INFO L225 Difference]: With dead ends: 2297 [2022-01-28 14:37:24,888 INFO L226 Difference]: Without dead ends: 2114 [2022-01-28 14:37:24,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:24,888 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 91 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:24,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 155 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:24,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2114 states. [2022-01-28 14:37:24,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2114 to 1302. [2022-01-28 14:37:24,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1302 states, 1301 states have (on average 3.890084550345888) internal successors, (5061), 1301 states have internal predecessors, (5061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:24,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1302 states to 1302 states and 5061 transitions. [2022-01-28 14:37:24,908 INFO L78 Accepts]: Start accepts. Automaton has 1302 states and 5061 transitions. Word has length 25 [2022-01-28 14:37:24,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:24,908 INFO L470 AbstractCegarLoop]: Abstraction has 1302 states and 5061 transitions. [2022-01-28 14:37:24,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:24,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1302 states and 5061 transitions. [2022-01-28 14:37:24,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:24,910 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:24,910 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:24,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable453 [2022-01-28 14:37:24,910 INFO L402 AbstractCegarLoop]: === Iteration 455 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:24,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:24,910 INFO L85 PathProgramCache]: Analyzing trace with hash -848499753, now seen corresponding path program 450 times [2022-01-28 14:37:24,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:24,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665779866] [2022-01-28 14:37:24,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:24,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:24,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:24,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:24,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:24,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665779866] [2022-01-28 14:37:24,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665779866] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:24,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:24,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:24,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336350884] [2022-01-28 14:37:24,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:24,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:24,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:24,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:24,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:24,990 INFO L87 Difference]: Start difference. First operand 1302 states and 5061 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:25,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:25,090 INFO L93 Difference]: Finished difference Result 2113 states and 7839 transitions. [2022-01-28 14:37:25,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:25,090 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:25,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:25,094 INFO L225 Difference]: With dead ends: 2113 [2022-01-28 14:37:25,094 INFO L226 Difference]: Without dead ends: 1906 [2022-01-28 14:37:25,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:25,094 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 75 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:25,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 171 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:25,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1906 states. [2022-01-28 14:37:25,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1906 to 1270. [2022-01-28 14:37:25,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 1269 states have (on average 3.909377462568952) internal successors, (4961), 1269 states have internal predecessors, (4961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:25,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 4961 transitions. [2022-01-28 14:37:25,114 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 4961 transitions. Word has length 25 [2022-01-28 14:37:25,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:25,114 INFO L470 AbstractCegarLoop]: Abstraction has 1270 states and 4961 transitions. [2022-01-28 14:37:25,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:25,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 4961 transitions. [2022-01-28 14:37:25,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:25,116 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:25,116 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:25,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable454 [2022-01-28 14:37:25,116 INFO L402 AbstractCegarLoop]: === Iteration 456 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:25,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:25,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1860018951, now seen corresponding path program 451 times [2022-01-28 14:37:25,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:25,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868974355] [2022-01-28 14:37:25,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:25,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:25,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:25,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:25,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:25,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868974355] [2022-01-28 14:37:25,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868974355] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:25,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:25,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:25,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555605152] [2022-01-28 14:37:25,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:25,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:25,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:25,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:25,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:25,193 INFO L87 Difference]: Start difference. First operand 1270 states and 4961 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:25,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:25,262 INFO L93 Difference]: Finished difference Result 2345 states and 8652 transitions. [2022-01-28 14:37:25,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:25,263 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:25,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:25,267 INFO L225 Difference]: With dead ends: 2345 [2022-01-28 14:37:25,267 INFO L226 Difference]: Without dead ends: 2158 [2022-01-28 14:37:25,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:25,267 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 101 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:25,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 136 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:25,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2158 states. [2022-01-28 14:37:25,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2158 to 1310. [2022-01-28 14:37:25,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 1309 states have (on average 3.8999236058059585) internal successors, (5105), 1309 states have internal predecessors, (5105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:25,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 5105 transitions. [2022-01-28 14:37:25,287 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 5105 transitions. Word has length 25 [2022-01-28 14:37:25,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:25,287 INFO L470 AbstractCegarLoop]: Abstraction has 1310 states and 5105 transitions. [2022-01-28 14:37:25,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:25,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 5105 transitions. [2022-01-28 14:37:25,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:25,289 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:25,289 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:25,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable455 [2022-01-28 14:37:25,289 INFO L402 AbstractCegarLoop]: === Iteration 457 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:25,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:25,289 INFO L85 PathProgramCache]: Analyzing trace with hash 391611351, now seen corresponding path program 452 times [2022-01-28 14:37:25,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:25,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735361036] [2022-01-28 14:37:25,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:25,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:25,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:25,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:25,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:25,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735361036] [2022-01-28 14:37:25,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735361036] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:25,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:25,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:25,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386694541] [2022-01-28 14:37:25,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:25,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:25,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:25,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:25,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:25,375 INFO L87 Difference]: Start difference. First operand 1310 states and 5105 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:25,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:25,479 INFO L93 Difference]: Finished difference Result 2341 states and 8612 transitions. [2022-01-28 14:37:25,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:25,480 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:25,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:25,484 INFO L225 Difference]: With dead ends: 2341 [2022-01-28 14:37:25,484 INFO L226 Difference]: Without dead ends: 2130 [2022-01-28 14:37:25,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:25,484 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 97 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:25,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 147 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:25,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2130 states. [2022-01-28 14:37:25,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2130 to 1282. [2022-01-28 14:37:25,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 1281 states have (on average 3.907103825136612) internal successors, (5005), 1281 states have internal predecessors, (5005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:25,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 5005 transitions. [2022-01-28 14:37:25,505 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 5005 transitions. Word has length 25 [2022-01-28 14:37:25,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:25,505 INFO L470 AbstractCegarLoop]: Abstraction has 1282 states and 5005 transitions. [2022-01-28 14:37:25,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:25,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 5005 transitions. [2022-01-28 14:37:25,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:25,507 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:25,507 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:25,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable456 [2022-01-28 14:37:25,507 INFO L402 AbstractCegarLoop]: === Iteration 458 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:25,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:25,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1588151383, now seen corresponding path program 453 times [2022-01-28 14:37:25,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:25,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814024726] [2022-01-28 14:37:25,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:25,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:25,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:25,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:25,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:25,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814024726] [2022-01-28 14:37:25,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814024726] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:25,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:25,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:25,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800145200] [2022-01-28 14:37:25,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:25,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:25,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:25,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:25,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:25,605 INFO L87 Difference]: Start difference. First operand 1282 states and 5005 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:25,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:25,692 INFO L93 Difference]: Finished difference Result 2257 states and 8308 transitions. [2022-01-28 14:37:25,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:25,693 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:25,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:25,696 INFO L225 Difference]: With dead ends: 2257 [2022-01-28 14:37:25,696 INFO L226 Difference]: Without dead ends: 2070 [2022-01-28 14:37:25,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:25,697 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 106 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:25,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 140 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:25,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2070 states. [2022-01-28 14:37:25,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2070 to 1306. [2022-01-28 14:37:25,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1306 states, 1305 states have (on average 3.893486590038314) internal successors, (5081), 1305 states have internal predecessors, (5081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:25,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 5081 transitions. [2022-01-28 14:37:25,716 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 5081 transitions. Word has length 25 [2022-01-28 14:37:25,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:25,716 INFO L470 AbstractCegarLoop]: Abstraction has 1306 states and 5081 transitions. [2022-01-28 14:37:25,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:25,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 5081 transitions. [2022-01-28 14:37:25,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:25,718 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:25,718 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:25,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable457 [2022-01-28 14:37:25,718 INFO L402 AbstractCegarLoop]: === Iteration 459 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:25,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:25,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1514349481, now seen corresponding path program 454 times [2022-01-28 14:37:25,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:25,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967121488] [2022-01-28 14:37:25,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:25,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:25,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:25,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:25,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:25,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967121488] [2022-01-28 14:37:25,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967121488] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:25,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:25,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:25,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577884862] [2022-01-28 14:37:25,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:25,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:25,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:25,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:25,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:25,815 INFO L87 Difference]: Start difference. First operand 1306 states and 5081 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:25,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:25,900 INFO L93 Difference]: Finished difference Result 2117 states and 7859 transitions. [2022-01-28 14:37:25,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:25,901 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:25,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:25,905 INFO L225 Difference]: With dead ends: 2117 [2022-01-28 14:37:25,905 INFO L226 Difference]: Without dead ends: 1918 [2022-01-28 14:37:25,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:25,906 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 96 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:25,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 136 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:25,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1918 states. [2022-01-28 14:37:25,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1918 to 1282. [2022-01-28 14:37:25,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 1281 states have (on average 3.897736143637783) internal successors, (4993), 1281 states have internal predecessors, (4993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:25,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 4993 transitions. [2022-01-28 14:37:25,926 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 4993 transitions. Word has length 25 [2022-01-28 14:37:25,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:25,926 INFO L470 AbstractCegarLoop]: Abstraction has 1282 states and 4993 transitions. [2022-01-28 14:37:25,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:25,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 4993 transitions. [2022-01-28 14:37:25,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:25,928 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:25,928 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:25,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable458 [2022-01-28 14:37:25,928 INFO L402 AbstractCegarLoop]: === Iteration 460 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:25,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:25,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1724468299, now seen corresponding path program 455 times [2022-01-28 14:37:25,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:25,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287725935] [2022-01-28 14:37:25,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:25,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:26,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:26,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:26,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287725935] [2022-01-28 14:37:26,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287725935] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:26,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:26,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:26,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580552358] [2022-01-28 14:37:26,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:26,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:26,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:26,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:26,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:26,051 INFO L87 Difference]: Start difference. First operand 1282 states and 4993 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:26,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:26,154 INFO L93 Difference]: Finished difference Result 2045 states and 7595 transitions. [2022-01-28 14:37:26,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:26,155 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:26,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:26,159 INFO L225 Difference]: With dead ends: 2045 [2022-01-28 14:37:26,159 INFO L226 Difference]: Without dead ends: 1862 [2022-01-28 14:37:26,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:26,159 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 82 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:26,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 147 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:26,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1862 states. [2022-01-28 14:37:26,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1862 to 1306. [2022-01-28 14:37:26,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1306 states, 1305 states have (on average 3.8842911877394637) internal successors, (5069), 1305 states have internal predecessors, (5069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:26,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 5069 transitions. [2022-01-28 14:37:26,180 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 5069 transitions. Word has length 25 [2022-01-28 14:37:26,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:26,180 INFO L470 AbstractCegarLoop]: Abstraction has 1306 states and 5069 transitions. [2022-01-28 14:37:26,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:26,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 5069 transitions. [2022-01-28 14:37:26,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:26,182 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:26,182 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:26,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable459 [2022-01-28 14:37:26,182 INFO L402 AbstractCegarLoop]: === Iteration 461 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:26,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:26,182 INFO L85 PathProgramCache]: Analyzing trace with hash -643405673, now seen corresponding path program 456 times [2022-01-28 14:37:26,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:26,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648596538] [2022-01-28 14:37:26,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:26,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:26,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:26,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:26,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:26,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648596538] [2022-01-28 14:37:26,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648596538] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:26,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:26,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:26,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931869275] [2022-01-28 14:37:26,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:26,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:26,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:26,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:26,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:26,304 INFO L87 Difference]: Start difference. First operand 1306 states and 5069 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:26,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:26,420 INFO L93 Difference]: Finished difference Result 1861 states and 6982 transitions. [2022-01-28 14:37:26,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:26,420 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:26,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:26,424 INFO L225 Difference]: With dead ends: 1861 [2022-01-28 14:37:26,424 INFO L226 Difference]: Without dead ends: 1646 [2022-01-28 14:37:26,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:26,425 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 71 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:26,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 141 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:26,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1646 states. [2022-01-28 14:37:26,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1646 to 1266. [2022-01-28 14:37:26,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1266 states, 1265 states have (on average 3.9138339920948617) internal successors, (4951), 1265 states have internal predecessors, (4951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:26,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 4951 transitions. [2022-01-28 14:37:26,442 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 4951 transitions. Word has length 25 [2022-01-28 14:37:26,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:26,442 INFO L470 AbstractCegarLoop]: Abstraction has 1266 states and 4951 transitions. [2022-01-28 14:37:26,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:26,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 4951 transitions. [2022-01-28 14:37:26,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:26,444 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:26,444 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:26,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable460 [2022-01-28 14:37:26,445 INFO L402 AbstractCegarLoop]: === Iteration 462 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:26,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:26,445 INFO L85 PathProgramCache]: Analyzing trace with hash 62321913, now seen corresponding path program 457 times [2022-01-28 14:37:26,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:26,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29695060] [2022-01-28 14:37:26,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:26,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:26,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:26,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:26,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:26,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29695060] [2022-01-28 14:37:26,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29695060] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:26,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:26,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:26,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137099855] [2022-01-28 14:37:26,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:26,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:26,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:26,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:26,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:26,563 INFO L87 Difference]: Start difference. First operand 1266 states and 4951 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:26,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:26,667 INFO L93 Difference]: Finished difference Result 2910 states and 10765 transitions. [2022-01-28 14:37:26,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:26,668 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:26,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:26,674 INFO L225 Difference]: With dead ends: 2910 [2022-01-28 14:37:26,674 INFO L226 Difference]: Without dead ends: 2723 [2022-01-28 14:37:26,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:26,674 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 103 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:26,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 138 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:26,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2723 states. [2022-01-28 14:37:26,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2723 to 1316. [2022-01-28 14:37:26,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1316 states, 1315 states have (on average 3.9133079847908747) internal successors, (5146), 1315 states have internal predecessors, (5146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:26,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 5146 transitions. [2022-01-28 14:37:26,699 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 5146 transitions. Word has length 25 [2022-01-28 14:37:26,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:26,699 INFO L470 AbstractCegarLoop]: Abstraction has 1316 states and 5146 transitions. [2022-01-28 14:37:26,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:26,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 5146 transitions. [2022-01-28 14:37:26,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:26,701 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:26,701 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:26,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable461 [2022-01-28 14:37:26,701 INFO L402 AbstractCegarLoop]: === Iteration 463 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:26,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:26,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1981015081, now seen corresponding path program 458 times [2022-01-28 14:37:26,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:26,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406656862] [2022-01-28 14:37:26,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:26,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:26,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:26,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:26,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406656862] [2022-01-28 14:37:26,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406656862] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:26,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:26,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:26,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674216752] [2022-01-28 14:37:26,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:26,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:26,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:26,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:26,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:26,820 INFO L87 Difference]: Start difference. First operand 1316 states and 5146 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:26,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:26,933 INFO L93 Difference]: Finished difference Result 2906 states and 10725 transitions. [2022-01-28 14:37:26,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:26,933 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:26,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:26,941 INFO L225 Difference]: With dead ends: 2906 [2022-01-28 14:37:26,941 INFO L226 Difference]: Without dead ends: 2695 [2022-01-28 14:37:26,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:26,941 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 99 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:26,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 146 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:26,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2695 states. [2022-01-28 14:37:26,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2695 to 1288. [2022-01-28 14:37:26,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1288 states, 1287 states have (on average 3.9207459207459205) internal successors, (5046), 1287 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:26,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 5046 transitions. [2022-01-28 14:37:26,971 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 5046 transitions. Word has length 25 [2022-01-28 14:37:26,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:26,971 INFO L470 AbstractCegarLoop]: Abstraction has 1288 states and 5046 transitions. [2022-01-28 14:37:26,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:26,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 5046 transitions. [2022-01-28 14:37:26,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:26,974 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:26,974 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:26,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable462 [2022-01-28 14:37:26,974 INFO L402 AbstractCegarLoop]: === Iteration 464 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:26,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:26,974 INFO L85 PathProgramCache]: Analyzing trace with hash -784475049, now seen corresponding path program 459 times [2022-01-28 14:37:26,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:26,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376967924] [2022-01-28 14:37:26,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:26,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:26,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:27,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:27,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:27,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376967924] [2022-01-28 14:37:27,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376967924] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:27,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:27,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:27,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66677204] [2022-01-28 14:37:27,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:27,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:27,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:27,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:27,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:27,075 INFO L87 Difference]: Start difference. First operand 1288 states and 5046 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:27,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:27,192 INFO L93 Difference]: Finished difference Result 2898 states and 10709 transitions. [2022-01-28 14:37:27,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:27,192 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:27,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:27,199 INFO L225 Difference]: With dead ends: 2898 [2022-01-28 14:37:27,199 INFO L226 Difference]: Without dead ends: 2711 [2022-01-28 14:37:27,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:27,200 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 116 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:27,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 137 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:27,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2711 states. [2022-01-28 14:37:27,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2711 to 1312. [2022-01-28 14:37:27,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1312 states, 1311 states have (on average 3.906941266209001) internal successors, (5122), 1311 states have internal predecessors, (5122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:27,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 5122 transitions. [2022-01-28 14:37:27,233 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 5122 transitions. Word has length 25 [2022-01-28 14:37:27,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:27,233 INFO L470 AbstractCegarLoop]: Abstraction has 1312 states and 5122 transitions. [2022-01-28 14:37:27,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:27,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 5122 transitions. [2022-01-28 14:37:27,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:27,236 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:27,236 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:27,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable463 [2022-01-28 14:37:27,236 INFO L402 AbstractCegarLoop]: === Iteration 465 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:27,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:27,236 INFO L85 PathProgramCache]: Analyzing trace with hash 407991383, now seen corresponding path program 460 times [2022-01-28 14:37:27,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:27,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330111698] [2022-01-28 14:37:27,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:27,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:27,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:27,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:27,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:27,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330111698] [2022-01-28 14:37:27,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330111698] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:27,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:27,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:27,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046983350] [2022-01-28 14:37:27,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:27,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:27,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:27,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:27,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:27,326 INFO L87 Difference]: Start difference. First operand 1312 states and 5122 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:27,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:27,434 INFO L93 Difference]: Finished difference Result 2886 states and 10645 transitions. [2022-01-28 14:37:27,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:27,434 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:27,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:27,441 INFO L225 Difference]: With dead ends: 2886 [2022-01-28 14:37:27,441 INFO L226 Difference]: Without dead ends: 2687 [2022-01-28 14:37:27,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:27,442 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 99 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:27,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 142 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:27,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2687 states. [2022-01-28 14:37:27,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2687 to 1288. [2022-01-28 14:37:27,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1288 states, 1287 states have (on average 3.9114219114219115) internal successors, (5034), 1287 states have internal predecessors, (5034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:27,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 5034 transitions. [2022-01-28 14:37:27,469 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 5034 transitions. Word has length 25 [2022-01-28 14:37:27,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:27,470 INFO L470 AbstractCegarLoop]: Abstraction has 1288 states and 5034 transitions. [2022-01-28 14:37:27,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:27,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 5034 transitions. [2022-01-28 14:37:27,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:27,472 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:27,472 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:27,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable464 [2022-01-28 14:37:27,472 INFO L402 AbstractCegarLoop]: === Iteration 466 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:27,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:27,472 INFO L85 PathProgramCache]: Analyzing trace with hash 197872565, now seen corresponding path program 461 times [2022-01-28 14:37:27,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:27,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727916609] [2022-01-28 14:37:27,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:27,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:27,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:27,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:27,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:27,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727916609] [2022-01-28 14:37:27,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727916609] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:27,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:27,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:27,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378222038] [2022-01-28 14:37:27,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:27,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:27,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:27,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:27,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:27,552 INFO L87 Difference]: Start difference. First operand 1288 states and 5034 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:27,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:27,634 INFO L93 Difference]: Finished difference Result 2890 states and 10673 transitions. [2022-01-28 14:37:27,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:27,634 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:27,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:27,640 INFO L225 Difference]: With dead ends: 2890 [2022-01-28 14:37:27,640 INFO L226 Difference]: Without dead ends: 2707 [2022-01-28 14:37:27,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:27,640 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 117 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:27,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 135 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:27,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2707 states. [2022-01-28 14:37:27,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2707 to 1312. [2022-01-28 14:37:27,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1312 states, 1311 states have (on average 3.8977879481311977) internal successors, (5110), 1311 states have internal predecessors, (5110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:27,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 5110 transitions. [2022-01-28 14:37:27,663 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 5110 transitions. Word has length 25 [2022-01-28 14:37:27,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:27,664 INFO L470 AbstractCegarLoop]: Abstraction has 1312 states and 5110 transitions. [2022-01-28 14:37:27,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:27,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 5110 transitions. [2022-01-28 14:37:27,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:27,666 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:27,666 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:27,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable465 [2022-01-28 14:37:27,666 INFO L402 AbstractCegarLoop]: === Iteration 467 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:27,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:27,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1278935191, now seen corresponding path program 462 times [2022-01-28 14:37:27,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:27,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437271522] [2022-01-28 14:37:27,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:27,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:27,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:27,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:27,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:27,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437271522] [2022-01-28 14:37:27,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437271522] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:27,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:27,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:27,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708177976] [2022-01-28 14:37:27,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:27,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:27,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:27,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:27,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:27,746 INFO L87 Difference]: Start difference. First operand 1312 states and 5110 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:27,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:27,822 INFO L93 Difference]: Finished difference Result 2882 states and 10621 transitions. [2022-01-28 14:37:27,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:27,823 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:27,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:27,828 INFO L225 Difference]: With dead ends: 2882 [2022-01-28 14:37:27,828 INFO L226 Difference]: Without dead ends: 2671 [2022-01-28 14:37:27,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:27,828 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 116 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:27,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 129 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:27,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2671 states. [2022-01-28 14:37:27,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2671 to 1276. [2022-01-28 14:37:27,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1276 states, 1275 states have (on average 3.9184313725490196) internal successors, (4996), 1275 states have internal predecessors, (4996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:27,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 4996 transitions. [2022-01-28 14:37:27,852 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 4996 transitions. Word has length 25 [2022-01-28 14:37:27,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:27,852 INFO L470 AbstractCegarLoop]: Abstraction has 1276 states and 4996 transitions. [2022-01-28 14:37:27,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:27,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 4996 transitions. [2022-01-28 14:37:27,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:27,854 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:27,854 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:27,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable466 [2022-01-28 14:37:27,855 INFO L402 AbstractCegarLoop]: === Iteration 468 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:27,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:27,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1901033001, now seen corresponding path program 463 times [2022-01-28 14:37:27,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:27,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519057807] [2022-01-28 14:37:27,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:27,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:27,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:27,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:27,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:27,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519057807] [2022-01-28 14:37:27,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519057807] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:27,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:27,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:27,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739577463] [2022-01-28 14:37:27,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:27,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:27,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:27,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:27,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:27,977 INFO L87 Difference]: Start difference. First operand 1276 states and 4996 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:28,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:28,094 INFO L93 Difference]: Finished difference Result 2802 states and 10327 transitions. [2022-01-28 14:37:28,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:28,094 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:28,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:28,100 INFO L225 Difference]: With dead ends: 2802 [2022-01-28 14:37:28,100 INFO L226 Difference]: Without dead ends: 2615 [2022-01-28 14:37:28,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:28,101 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 108 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:28,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 146 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:28,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2615 states. [2022-01-28 14:37:28,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2615 to 1326. [2022-01-28 14:37:28,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1326 states, 1325 states have (on average 3.913207547169811) internal successors, (5185), 1325 states have internal predecessors, (5185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:28,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 5185 transitions. [2022-01-28 14:37:28,126 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 5185 transitions. Word has length 25 [2022-01-28 14:37:28,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:28,126 INFO L470 AbstractCegarLoop]: Abstraction has 1326 states and 5185 transitions. [2022-01-28 14:37:28,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:28,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 5185 transitions. [2022-01-28 14:37:28,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:28,128 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:28,128 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:28,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable467 [2022-01-28 14:37:28,128 INFO L402 AbstractCegarLoop]: === Iteration 469 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:28,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:28,128 INFO L85 PathProgramCache]: Analyzing trace with hash 350597301, now seen corresponding path program 464 times [2022-01-28 14:37:28,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:28,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242083251] [2022-01-28 14:37:28,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:28,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:28,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:28,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:28,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:28,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242083251] [2022-01-28 14:37:28,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242083251] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:28,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:28,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:28,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819763986] [2022-01-28 14:37:28,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:28,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:28,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:28,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:28,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:28,217 INFO L87 Difference]: Start difference. First operand 1326 states and 5185 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:28,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:28,303 INFO L93 Difference]: Finished difference Result 2798 states and 10287 transitions. [2022-01-28 14:37:28,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:28,303 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:28,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:28,309 INFO L225 Difference]: With dead ends: 2798 [2022-01-28 14:37:28,309 INFO L226 Difference]: Without dead ends: 2587 [2022-01-28 14:37:28,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:28,309 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 100 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:28,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 150 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:28,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2587 states. [2022-01-28 14:37:28,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2587 to 1298. [2022-01-28 14:37:28,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1298 states, 1297 states have (on average 3.9190439475713186) internal successors, (5083), 1297 states have internal predecessors, (5083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:28,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 5083 transitions. [2022-01-28 14:37:28,337 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 5083 transitions. Word has length 25 [2022-01-28 14:37:28,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:28,337 INFO L470 AbstractCegarLoop]: Abstraction has 1298 states and 5083 transitions. [2022-01-28 14:37:28,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:28,337 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 5083 transitions. [2022-01-28 14:37:28,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:28,339 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:28,339 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:28,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable468 [2022-01-28 14:37:28,339 INFO L402 AbstractCegarLoop]: === Iteration 470 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:28,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:28,340 INFO L85 PathProgramCache]: Analyzing trace with hash 487047639, now seen corresponding path program 465 times [2022-01-28 14:37:28,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:28,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635311894] [2022-01-28 14:37:28,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:28,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:28,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:28,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:28,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:28,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635311894] [2022-01-28 14:37:28,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635311894] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:28,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:28,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:28,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702723601] [2022-01-28 14:37:28,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:28,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:28,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:28,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:28,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:28,416 INFO L87 Difference]: Start difference. First operand 1298 states and 5083 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:28,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:28,496 INFO L93 Difference]: Finished difference Result 2859 states and 10515 transitions. [2022-01-28 14:37:28,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:28,496 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:28,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:28,504 INFO L225 Difference]: With dead ends: 2859 [2022-01-28 14:37:28,504 INFO L226 Difference]: Without dead ends: 2672 [2022-01-28 14:37:28,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:28,504 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 113 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:28,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 137 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:28,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2672 states. [2022-01-28 14:37:28,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2672 to 1344. [2022-01-28 14:37:28,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1344 states, 1343 states have (on average 3.9017125837676843) internal successors, (5240), 1343 states have internal predecessors, (5240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:28,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 5240 transitions. [2022-01-28 14:37:28,539 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 5240 transitions. Word has length 25 [2022-01-28 14:37:28,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:28,539 INFO L470 AbstractCegarLoop]: Abstraction has 1344 states and 5240 transitions. [2022-01-28 14:37:28,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:28,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 5240 transitions. [2022-01-28 14:37:28,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:28,542 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:28,542 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:28,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable469 [2022-01-28 14:37:28,542 INFO L402 AbstractCegarLoop]: === Iteration 471 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:28,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:28,542 INFO L85 PathProgramCache]: Analyzing trace with hash 567937495, now seen corresponding path program 466 times [2022-01-28 14:37:28,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:28,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493832146] [2022-01-28 14:37:28,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:28,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:28,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:28,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:28,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493832146] [2022-01-28 14:37:28,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493832146] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:28,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:28,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:28,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129249778] [2022-01-28 14:37:28,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:28,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:28,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:28,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:28,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:28,631 INFO L87 Difference]: Start difference. First operand 1344 states and 5240 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:28,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:28,708 INFO L93 Difference]: Finished difference Result 2894 states and 10604 transitions. [2022-01-28 14:37:28,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:28,708 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:28,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:28,713 INFO L225 Difference]: With dead ends: 2894 [2022-01-28 14:37:28,714 INFO L226 Difference]: Without dead ends: 2626 [2022-01-28 14:37:28,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:28,714 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 102 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:28,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 150 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:28,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2626 states. [2022-01-28 14:37:28,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2626 to 1298. [2022-01-28 14:37:28,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1298 states, 1297 states have (on average 3.902081727062452) internal successors, (5061), 1297 states have internal predecessors, (5061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:28,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 5061 transitions. [2022-01-28 14:37:28,739 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 5061 transitions. Word has length 25 [2022-01-28 14:37:28,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:28,739 INFO L470 AbstractCegarLoop]: Abstraction has 1298 states and 5061 transitions. [2022-01-28 14:37:28,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:28,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 5061 transitions. [2022-01-28 14:37:28,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:28,741 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:28,741 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:28,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable470 [2022-01-28 14:37:28,741 INFO L402 AbstractCegarLoop]: === Iteration 472 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:28,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:28,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1469395253, now seen corresponding path program 467 times [2022-01-28 14:37:28,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:28,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375539335] [2022-01-28 14:37:28,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:28,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:28,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:28,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:28,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:28,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375539335] [2022-01-28 14:37:28,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375539335] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:28,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:28,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:28,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651354488] [2022-01-28 14:37:28,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:28,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:28,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:28,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:28,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:28,863 INFO L87 Difference]: Start difference. First operand 1298 states and 5061 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:28,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:28,951 INFO L93 Difference]: Finished difference Result 2849 states and 10462 transitions. [2022-01-28 14:37:28,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:28,951 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:28,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:28,957 INFO L225 Difference]: With dead ends: 2849 [2022-01-28 14:37:28,957 INFO L226 Difference]: Without dead ends: 2666 [2022-01-28 14:37:28,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:28,957 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 115 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:28,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 138 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:28,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2666 states. [2022-01-28 14:37:28,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2666 to 1342. [2022-01-28 14:37:28,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1342 states, 1341 states have (on average 3.8873974645786724) internal successors, (5213), 1341 states have internal predecessors, (5213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:28,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 5213 transitions. [2022-01-28 14:37:28,982 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 5213 transitions. Word has length 25 [2022-01-28 14:37:28,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:28,982 INFO L470 AbstractCegarLoop]: Abstraction has 1342 states and 5213 transitions. [2022-01-28 14:37:28,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:28,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 5213 transitions. [2022-01-28 14:37:28,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:28,984 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:28,984 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:28,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable471 [2022-01-28 14:37:28,984 INFO L402 AbstractCegarLoop]: === Iteration 473 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:28,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:28,984 INFO L85 PathProgramCache]: Analyzing trace with hash 399876247, now seen corresponding path program 468 times [2022-01-28 14:37:28,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:28,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071863898] [2022-01-28 14:37:28,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:28,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:28,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:29,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:29,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:29,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071863898] [2022-01-28 14:37:29,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071863898] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:29,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:29,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:29,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117861715] [2022-01-28 14:37:29,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:29,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:29,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:29,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:29,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:29,063 INFO L87 Difference]: Start difference. First operand 1342 states and 5213 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:29,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:29,136 INFO L93 Difference]: Finished difference Result 2888 states and 10565 transitions. [2022-01-28 14:37:29,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:29,136 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:29,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:29,142 INFO L225 Difference]: With dead ends: 2888 [2022-01-28 14:37:29,142 INFO L226 Difference]: Without dead ends: 2600 [2022-01-28 14:37:29,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:29,143 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 125 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:29,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 125 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:29,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2600 states. [2022-01-28 14:37:29,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2600 to 1276. [2022-01-28 14:37:29,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1276 states, 1275 states have (on average 3.9105882352941177) internal successors, (4986), 1275 states have internal predecessors, (4986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:29,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 4986 transitions. [2022-01-28 14:37:29,169 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 4986 transitions. Word has length 25 [2022-01-28 14:37:29,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:29,169 INFO L470 AbstractCegarLoop]: Abstraction has 1276 states and 4986 transitions. [2022-01-28 14:37:29,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:29,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 4986 transitions. [2022-01-28 14:37:29,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:29,171 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:29,171 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:29,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable472 [2022-01-28 14:37:29,171 INFO L402 AbstractCegarLoop]: === Iteration 474 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:29,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:29,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1537186229, now seen corresponding path program 469 times [2022-01-28 14:37:29,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:29,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985365146] [2022-01-28 14:37:29,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:29,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:29,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:29,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:29,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:29,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985365146] [2022-01-28 14:37:29,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985365146] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:29,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:29,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:29,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821045165] [2022-01-28 14:37:29,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:29,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:29,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:29,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:29,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:29,251 INFO L87 Difference]: Start difference. First operand 1276 states and 4986 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:29,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:29,326 INFO L93 Difference]: Finished difference Result 2756 states and 10128 transitions. [2022-01-28 14:37:29,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:29,327 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:29,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:29,332 INFO L225 Difference]: With dead ends: 2756 [2022-01-28 14:37:29,332 INFO L226 Difference]: Without dead ends: 2569 [2022-01-28 14:37:29,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:29,332 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 110 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:29,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 144 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:29,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2569 states. [2022-01-28 14:37:29,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2569 to 1320. [2022-01-28 14:37:29,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 1319 states have (on average 3.907505686125853) internal successors, (5154), 1319 states have internal predecessors, (5154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:29,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 5154 transitions. [2022-01-28 14:37:29,366 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 5154 transitions. Word has length 25 [2022-01-28 14:37:29,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:29,367 INFO L470 AbstractCegarLoop]: Abstraction has 1320 states and 5154 transitions. [2022-01-28 14:37:29,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:29,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 5154 transitions. [2022-01-28 14:37:29,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:29,368 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:29,369 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:29,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable473 [2022-01-28 14:37:29,369 INFO L402 AbstractCegarLoop]: === Iteration 475 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:29,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:29,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1565314635, now seen corresponding path program 470 times [2022-01-28 14:37:29,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:29,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615294373] [2022-01-28 14:37:29,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:29,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:29,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:29,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:29,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:29,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615294373] [2022-01-28 14:37:29,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615294373] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:29,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:29,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:29,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586522548] [2022-01-28 14:37:29,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:29,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:29,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:29,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:29,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:29,444 INFO L87 Difference]: Start difference. First operand 1320 states and 5154 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:29,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:29,522 INFO L93 Difference]: Finished difference Result 2744 states and 10064 transitions. [2022-01-28 14:37:29,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:29,522 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:29,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:29,528 INFO L225 Difference]: With dead ends: 2744 [2022-01-28 14:37:29,528 INFO L226 Difference]: Without dead ends: 2545 [2022-01-28 14:37:29,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:29,528 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 106 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:29,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 140 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:29,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2545 states. [2022-01-28 14:37:29,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2545 to 1296. [2022-01-28 14:37:29,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1296 states, 1295 states have (on average 3.911969111969112) internal successors, (5066), 1295 states have internal predecessors, (5066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:29,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 5066 transitions. [2022-01-28 14:37:29,553 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 5066 transitions. Word has length 25 [2022-01-28 14:37:29,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:29,553 INFO L470 AbstractCegarLoop]: Abstraction has 1296 states and 5066 transitions. [2022-01-28 14:37:29,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:29,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 5066 transitions. [2022-01-28 14:37:29,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:29,555 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:29,555 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:29,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable474 [2022-01-28 14:37:29,555 INFO L402 AbstractCegarLoop]: === Iteration 476 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:29,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:29,556 INFO L85 PathProgramCache]: Analyzing trace with hash 919662871, now seen corresponding path program 471 times [2022-01-28 14:37:29,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:29,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481975744] [2022-01-28 14:37:29,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:29,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:29,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:29,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:29,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481975744] [2022-01-28 14:37:29,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481975744] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:29,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:29,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:29,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504673512] [2022-01-28 14:37:29,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:29,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:29,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:29,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:29,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:29,649 INFO L87 Difference]: Start difference. First operand 1296 states and 5066 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:29,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:29,764 INFO L93 Difference]: Finished difference Result 2779 states and 10175 transitions. [2022-01-28 14:37:29,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:29,764 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:29,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:29,769 INFO L225 Difference]: With dead ends: 2779 [2022-01-28 14:37:29,769 INFO L226 Difference]: Without dead ends: 2592 [2022-01-28 14:37:29,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:29,770 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 103 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:29,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 156 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:29,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2592 states. [2022-01-28 14:37:29,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2592 to 1342. [2022-01-28 14:37:29,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1342 states, 1341 states have (on average 3.894854586129754) internal successors, (5223), 1341 states have internal predecessors, (5223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:29,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 5223 transitions. [2022-01-28 14:37:29,794 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 5223 transitions. Word has length 25 [2022-01-28 14:37:29,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:29,794 INFO L470 AbstractCegarLoop]: Abstraction has 1342 states and 5223 transitions. [2022-01-28 14:37:29,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:29,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 5223 transitions. [2022-01-28 14:37:29,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:29,796 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:29,796 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:29,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable475 [2022-01-28 14:37:29,796 INFO L402 AbstractCegarLoop]: === Iteration 477 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:29,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:29,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1455124043, now seen corresponding path program 472 times [2022-01-28 14:37:29,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:29,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912932800] [2022-01-28 14:37:29,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:29,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:29,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:29,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:29,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:29,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912932800] [2022-01-28 14:37:29,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912932800] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:29,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:29,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:29,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883640834] [2022-01-28 14:37:29,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:29,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:29,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:29,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:29,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:29,884 INFO L87 Difference]: Start difference. First operand 1342 states and 5223 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:29,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:29,957 INFO L93 Difference]: Finished difference Result 2814 states and 10264 transitions. [2022-01-28 14:37:29,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:29,957 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:29,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:29,962 INFO L225 Difference]: With dead ends: 2814 [2022-01-28 14:37:29,963 INFO L226 Difference]: Without dead ends: 2546 [2022-01-28 14:37:29,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:29,963 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 115 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:29,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 148 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:29,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2022-01-28 14:37:29,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 1296. [2022-01-28 14:37:29,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1296 states, 1295 states have (on average 3.8965250965250964) internal successors, (5046), 1295 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:29,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 5046 transitions. [2022-01-28 14:37:29,985 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 5046 transitions. Word has length 25 [2022-01-28 14:37:29,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:29,985 INFO L470 AbstractCegarLoop]: Abstraction has 1296 states and 5046 transitions. [2022-01-28 14:37:29,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:29,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 5046 transitions. [2022-01-28 14:37:29,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:29,987 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:29,987 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:29,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable476 [2022-01-28 14:37:29,987 INFO L402 AbstractCegarLoop]: === Iteration 478 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:29,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:29,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1139574347, now seen corresponding path program 473 times [2022-01-28 14:37:29,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:29,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757424053] [2022-01-28 14:37:29,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:29,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:29,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:30,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:30,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:30,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757424053] [2022-01-28 14:37:30,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757424053] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:30,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:30,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:30,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681148955] [2022-01-28 14:37:30,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:30,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:30,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:30,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:30,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:30,080 INFO L87 Difference]: Start difference. First operand 1296 states and 5046 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:30,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:30,163 INFO L93 Difference]: Finished difference Result 2749 states and 10052 transitions. [2022-01-28 14:37:30,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:30,163 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:30,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:30,169 INFO L225 Difference]: With dead ends: 2749 [2022-01-28 14:37:30,170 INFO L226 Difference]: Without dead ends: 2574 [2022-01-28 14:37:30,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:30,170 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 113 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:30,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 149 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:30,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2574 states. [2022-01-28 14:37:30,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2574 to 1336. [2022-01-28 14:37:30,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1336 states, 1335 states have (on average 3.884644194756554) internal successors, (5186), 1335 states have internal predecessors, (5186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:30,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 5186 transitions. [2022-01-28 14:37:30,201 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 5186 transitions. Word has length 25 [2022-01-28 14:37:30,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:30,201 INFO L470 AbstractCegarLoop]: Abstraction has 1336 states and 5186 transitions. [2022-01-28 14:37:30,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:30,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 5186 transitions. [2022-01-28 14:37:30,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:30,203 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:30,204 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:30,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable477 [2022-01-28 14:37:30,204 INFO L402 AbstractCegarLoop]: === Iteration 479 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:30,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:30,204 INFO L85 PathProgramCache]: Analyzing trace with hash -921222761, now seen corresponding path program 474 times [2022-01-28 14:37:30,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:30,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22402273] [2022-01-28 14:37:30,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:30,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:30,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:30,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:30,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:30,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22402273] [2022-01-28 14:37:30,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22402273] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:30,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:30,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:30,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006033117] [2022-01-28 14:37:30,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:30,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:30,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:30,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:30,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:30,299 INFO L87 Difference]: Start difference. First operand 1336 states and 5186 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:30,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:30,398 INFO L93 Difference]: Finished difference Result 2701 states and 9852 transitions. [2022-01-28 14:37:30,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:30,399 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:30,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:30,404 INFO L225 Difference]: With dead ends: 2701 [2022-01-28 14:37:30,404 INFO L226 Difference]: Without dead ends: 2419 [2022-01-28 14:37:30,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:30,404 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 112 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:30,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 133 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:30,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2419 states. [2022-01-28 14:37:30,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2419 to 1276. [2022-01-28 14:37:30,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1276 states, 1275 states have (on average 3.9027450980392158) internal successors, (4976), 1275 states have internal predecessors, (4976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:30,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 4976 transitions. [2022-01-28 14:37:30,428 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 4976 transitions. Word has length 25 [2022-01-28 14:37:30,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:30,428 INFO L470 AbstractCegarLoop]: Abstraction has 1276 states and 4976 transitions. [2022-01-28 14:37:30,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:30,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 4976 transitions. [2022-01-28 14:37:30,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:30,430 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:30,430 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:30,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable478 [2022-01-28 14:37:30,430 INFO L402 AbstractCegarLoop]: === Iteration 480 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:30,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:30,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1785384557, now seen corresponding path program 475 times [2022-01-28 14:37:30,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:30,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23859524] [2022-01-28 14:37:30,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:30,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:30,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:30,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:30,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23859524] [2022-01-28 14:37:30,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23859524] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:30,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:30,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:30,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291249363] [2022-01-28 14:37:30,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:30,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:30,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:30,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:30,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:30,517 INFO L87 Difference]: Start difference. First operand 1276 states and 4976 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:30,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:30,633 INFO L93 Difference]: Finished difference Result 2678 states and 9803 transitions. [2022-01-28 14:37:30,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:30,633 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:30,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:30,638 INFO L225 Difference]: With dead ends: 2678 [2022-01-28 14:37:30,638 INFO L226 Difference]: Without dead ends: 2495 [2022-01-28 14:37:30,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:30,639 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 118 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:30,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 130 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:30,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2022-01-28 14:37:30,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 1320. [2022-01-28 14:37:30,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 1319 states have (on average 3.899924184988628) internal successors, (5144), 1319 states have internal predecessors, (5144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:30,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 5144 transitions. [2022-01-28 14:37:30,661 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 5144 transitions. Word has length 25 [2022-01-28 14:37:30,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:30,661 INFO L470 AbstractCegarLoop]: Abstraction has 1320 states and 5144 transitions. [2022-01-28 14:37:30,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:30,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 5144 transitions. [2022-01-28 14:37:30,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:30,663 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:30,663 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:30,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable479 [2022-01-28 14:37:30,663 INFO L402 AbstractCegarLoop]: === Iteration 481 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:30,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:30,663 INFO L85 PathProgramCache]: Analyzing trace with hash -704321931, now seen corresponding path program 476 times [2022-01-28 14:37:30,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:30,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97207147] [2022-01-28 14:37:30,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:30,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:30,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:30,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:30,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97207147] [2022-01-28 14:37:30,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97207147] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:30,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:30,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:30,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605373869] [2022-01-28 14:37:30,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:30,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:30,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:30,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:30,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:30,758 INFO L87 Difference]: Start difference. First operand 1320 states and 5144 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:30,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:30,868 INFO L93 Difference]: Finished difference Result 2670 states and 9751 transitions. [2022-01-28 14:37:30,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:30,869 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:30,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:30,874 INFO L225 Difference]: With dead ends: 2670 [2022-01-28 14:37:30,874 INFO L226 Difference]: Without dead ends: 2471 [2022-01-28 14:37:30,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:30,874 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 104 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:30,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 152 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:30,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2471 states. [2022-01-28 14:37:30,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2471 to 1296. [2022-01-28 14:37:30,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1296 states, 1295 states have (on average 3.904247104247104) internal successors, (5056), 1295 states have internal predecessors, (5056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:30,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 5056 transitions. [2022-01-28 14:37:30,896 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 5056 transitions. Word has length 25 [2022-01-28 14:37:30,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:30,896 INFO L470 AbstractCegarLoop]: Abstraction has 1296 states and 5056 transitions. [2022-01-28 14:37:30,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:30,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 5056 transitions. [2022-01-28 14:37:30,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:30,898 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:30,898 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:30,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable480 [2022-01-28 14:37:30,898 INFO L402 AbstractCegarLoop]: === Iteration 482 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:30,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:30,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1892059381, now seen corresponding path program 477 times [2022-01-28 14:37:30,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:30,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749835405] [2022-01-28 14:37:30,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:30,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:30,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:31,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:31,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:31,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749835405] [2022-01-28 14:37:31,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749835405] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:31,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:31,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:31,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738077995] [2022-01-28 14:37:31,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:31,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:31,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:31,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:31,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:31,012 INFO L87 Difference]: Start difference. First operand 1296 states and 5056 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:31,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:31,105 INFO L93 Difference]: Finished difference Result 2606 states and 9515 transitions. [2022-01-28 14:37:31,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:31,105 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:31,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:31,110 INFO L225 Difference]: With dead ends: 2606 [2022-01-28 14:37:31,110 INFO L226 Difference]: Without dead ends: 2423 [2022-01-28 14:37:31,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:31,110 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 114 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:31,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 138 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:31,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2423 states. [2022-01-28 14:37:31,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2423 to 1340. [2022-01-28 14:37:31,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1340 states, 1339 states have (on average 3.8894697535474236) internal successors, (5208), 1339 states have internal predecessors, (5208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:31,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 5208 transitions. [2022-01-28 14:37:31,132 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 5208 transitions. Word has length 25 [2022-01-28 14:37:31,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:31,132 INFO L470 AbstractCegarLoop]: Abstraction has 1340 states and 5208 transitions. [2022-01-28 14:37:31,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:31,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 5208 transitions. [2022-01-28 14:37:31,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:31,134 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:31,134 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:31,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable481 [2022-01-28 14:37:31,134 INFO L402 AbstractCegarLoop]: === Iteration 483 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:31,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:31,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1633136395, now seen corresponding path program 478 times [2022-01-28 14:37:31,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:31,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487719487] [2022-01-28 14:37:31,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:31,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:31,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:31,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:31,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:31,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487719487] [2022-01-28 14:37:31,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487719487] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:31,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:31,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:31,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113865069] [2022-01-28 14:37:31,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:31,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:31,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:31,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:31,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:31,220 INFO L87 Difference]: Start difference. First operand 1340 states and 5208 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:31,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:31,318 INFO L93 Difference]: Finished difference Result 2645 states and 9618 transitions. [2022-01-28 14:37:31,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:31,318 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:31,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:31,322 INFO L225 Difference]: With dead ends: 2645 [2022-01-28 14:37:31,322 INFO L226 Difference]: Without dead ends: 2379 [2022-01-28 14:37:31,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:31,322 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 108 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:31,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 133 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:31,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2379 states. [2022-01-28 14:37:31,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2379 to 1296. [2022-01-28 14:37:31,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1296 states, 1295 states have (on average 3.8888030888030887) internal successors, (5036), 1295 states have internal predecessors, (5036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:31,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 5036 transitions. [2022-01-28 14:37:31,344 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 5036 transitions. Word has length 25 [2022-01-28 14:37:31,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:31,344 INFO L470 AbstractCegarLoop]: Abstraction has 1296 states and 5036 transitions. [2022-01-28 14:37:31,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:31,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 5036 transitions. [2022-01-28 14:37:31,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:31,346 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:31,346 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:31,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable482 [2022-01-28 14:37:31,346 INFO L402 AbstractCegarLoop]: === Iteration 484 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:31,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:31,346 INFO L85 PathProgramCache]: Analyzing trace with hash -2014902953, now seen corresponding path program 479 times [2022-01-28 14:37:31,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:31,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598645793] [2022-01-28 14:37:31,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:31,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:31,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:31,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:31,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:31,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598645793] [2022-01-28 14:37:31,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598645793] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:31,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:31,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:31,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786056052] [2022-01-28 14:37:31,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:31,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:31,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:31,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:31,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:31,424 INFO L87 Difference]: Start difference. First operand 1296 states and 5036 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:31,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:31,502 INFO L93 Difference]: Finished difference Result 2546 states and 9259 transitions. [2022-01-28 14:37:31,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:31,502 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:31,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:31,507 INFO L225 Difference]: With dead ends: 2546 [2022-01-28 14:37:31,507 INFO L226 Difference]: Without dead ends: 2371 [2022-01-28 14:37:31,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:31,507 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 99 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:31,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 145 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:31,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2371 states. [2022-01-28 14:37:31,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2371 to 1336. [2022-01-28 14:37:31,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1336 states, 1335 states have (on average 3.8771535580524343) internal successors, (5176), 1335 states have internal predecessors, (5176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:31,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 5176 transitions. [2022-01-28 14:37:31,529 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 5176 transitions. Word has length 25 [2022-01-28 14:37:31,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:31,529 INFO L470 AbstractCegarLoop]: Abstraction has 1336 states and 5176 transitions. [2022-01-28 14:37:31,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:31,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 5176 transitions. [2022-01-28 14:37:31,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:31,531 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:31,531 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:31,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable483 [2022-01-28 14:37:31,531 INFO L402 AbstractCegarLoop]: === Iteration 485 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:31,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:31,531 INFO L85 PathProgramCache]: Analyzing trace with hash 459028917, now seen corresponding path program 480 times [2022-01-28 14:37:31,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:31,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932748312] [2022-01-28 14:37:31,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:31,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:31,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:31,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:31,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:31,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932748312] [2022-01-28 14:37:31,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932748312] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:31,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:31,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:31,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315313013] [2022-01-28 14:37:31,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:31,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:31,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:31,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:31,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:31,619 INFO L87 Difference]: Start difference. First operand 1336 states and 5176 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:31,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:31,729 INFO L93 Difference]: Finished difference Result 2498 states and 9059 transitions. [2022-01-28 14:37:31,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:31,730 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:31,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:31,734 INFO L225 Difference]: With dead ends: 2498 [2022-01-28 14:37:31,734 INFO L226 Difference]: Without dead ends: 2202 [2022-01-28 14:37:31,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:31,734 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 92 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:31,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 142 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:31,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2202 states. [2022-01-28 14:37:31,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2202 to 1262. [2022-01-28 14:37:31,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1262 states, 1261 states have (on average 3.9183187946074542) internal successors, (4941), 1261 states have internal predecessors, (4941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:31,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 4941 transitions. [2022-01-28 14:37:31,755 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 4941 transitions. Word has length 25 [2022-01-28 14:37:31,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:31,755 INFO L470 AbstractCegarLoop]: Abstraction has 1262 states and 4941 transitions. [2022-01-28 14:37:31,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:31,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 4941 transitions. [2022-01-28 14:37:31,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:31,756 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:31,756 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:31,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable484 [2022-01-28 14:37:31,757 INFO L402 AbstractCegarLoop]: === Iteration 486 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:31,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:31,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1249862383, now seen corresponding path program 481 times [2022-01-28 14:37:31,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:31,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079785925] [2022-01-28 14:37:31,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:31,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:31,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:31,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:31,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:31,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079785925] [2022-01-28 14:37:31,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079785925] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:31,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:31,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:31,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786904038] [2022-01-28 14:37:31,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:31,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:31,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:31,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:31,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:31,995 INFO L87 Difference]: Start difference. First operand 1262 states and 4941 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:32,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:32,168 INFO L93 Difference]: Finished difference Result 2545 states and 9271 transitions. [2022-01-28 14:37:32,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:32,168 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:32,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:32,173 INFO L225 Difference]: With dead ends: 2545 [2022-01-28 14:37:32,173 INFO L226 Difference]: Without dead ends: 2386 [2022-01-28 14:37:32,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:32,173 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 110 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:32,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 148 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-28 14:37:32,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2386 states. [2022-01-28 14:37:32,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2386 to 1286. [2022-01-28 14:37:32,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1285 states have (on average 3.9105058365758754) internal successors, (5025), 1285 states have internal predecessors, (5025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:32,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 5025 transitions. [2022-01-28 14:37:32,195 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 5025 transitions. Word has length 25 [2022-01-28 14:37:32,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:32,195 INFO L470 AbstractCegarLoop]: Abstraction has 1286 states and 5025 transitions. [2022-01-28 14:37:32,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:32,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 5025 transitions. [2022-01-28 14:37:32,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:32,197 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:32,197 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:32,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable485 [2022-01-28 14:37:32,197 INFO L402 AbstractCegarLoop]: === Iteration 487 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:32,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:32,197 INFO L85 PathProgramCache]: Analyzing trace with hash -340072367, now seen corresponding path program 482 times [2022-01-28 14:37:32,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:32,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097672462] [2022-01-28 14:37:32,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:32,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:32,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:32,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:32,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:32,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097672462] [2022-01-28 14:37:32,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097672462] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:32,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:32,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:32,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429424663] [2022-01-28 14:37:32,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:32,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:32,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:32,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:32,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:32,275 INFO L87 Difference]: Start difference. First operand 1286 states and 5025 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:32,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:32,346 INFO L93 Difference]: Finished difference Result 2575 states and 9364 transitions. [2022-01-28 14:37:32,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:32,346 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:32,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:32,351 INFO L225 Difference]: With dead ends: 2575 [2022-01-28 14:37:32,351 INFO L226 Difference]: Without dead ends: 2370 [2022-01-28 14:37:32,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:32,351 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 143 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:32,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 131 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:32,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2370 states. [2022-01-28 14:37:32,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2370 to 1270. [2022-01-28 14:37:32,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 1269 states have (on average 3.9156816390858946) internal successors, (4969), 1269 states have internal predecessors, (4969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:32,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 4969 transitions. [2022-01-28 14:37:32,372 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 4969 transitions. Word has length 25 [2022-01-28 14:37:32,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:32,372 INFO L470 AbstractCegarLoop]: Abstraction has 1270 states and 4969 transitions. [2022-01-28 14:37:32,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:32,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 4969 transitions. [2022-01-28 14:37:32,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:32,374 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:32,374 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:32,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable486 [2022-01-28 14:37:32,374 INFO L402 AbstractCegarLoop]: === Iteration 488 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:32,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:32,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1964042287, now seen corresponding path program 483 times [2022-01-28 14:37:32,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:32,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295047152] [2022-01-28 14:37:32,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:32,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:32,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:32,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:32,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:32,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295047152] [2022-01-28 14:37:32,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295047152] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:32,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:32,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:32,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484470819] [2022-01-28 14:37:32,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:32,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:32,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:32,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:32,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:32,480 INFO L87 Difference]: Start difference. First operand 1270 states and 4969 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:32,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:32,550 INFO L93 Difference]: Finished difference Result 2543 states and 9258 transitions. [2022-01-28 14:37:32,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:32,550 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:32,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:32,555 INFO L225 Difference]: With dead ends: 2543 [2022-01-28 14:37:32,555 INFO L226 Difference]: Without dead ends: 2384 [2022-01-28 14:37:32,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:32,555 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 119 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:32,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 145 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:32,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2384 states. [2022-01-28 14:37:32,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2384 to 1286. [2022-01-28 14:37:32,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1285 states have (on average 3.9042801556420232) internal successors, (5017), 1285 states have internal predecessors, (5017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:32,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 5017 transitions. [2022-01-28 14:37:32,577 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 5017 transitions. Word has length 25 [2022-01-28 14:37:32,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:32,577 INFO L470 AbstractCegarLoop]: Abstraction has 1286 states and 5017 transitions. [2022-01-28 14:37:32,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:32,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 5017 transitions. [2022-01-28 14:37:32,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:32,579 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:32,579 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:32,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable487 [2022-01-28 14:37:32,579 INFO L402 AbstractCegarLoop]: === Iteration 489 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:32,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:32,579 INFO L85 PathProgramCache]: Analyzing trace with hash -955744303, now seen corresponding path program 484 times [2022-01-28 14:37:32,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:32,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741156708] [2022-01-28 14:37:32,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:32,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:32,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:32,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:32,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:32,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741156708] [2022-01-28 14:37:32,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741156708] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:32,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:32,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:32,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168018046] [2022-01-28 14:37:32,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:32,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:32,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:32,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:32,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:32,664 INFO L87 Difference]: Start difference. First operand 1286 states and 5017 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:32,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:32,747 INFO L93 Difference]: Finished difference Result 2571 states and 9346 transitions. [2022-01-28 14:37:32,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:32,747 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:32,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:32,752 INFO L225 Difference]: With dead ends: 2571 [2022-01-28 14:37:32,752 INFO L226 Difference]: Without dead ends: 2368 [2022-01-28 14:37:32,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:32,753 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 111 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:32,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 156 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:32,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2368 states. [2022-01-28 14:37:32,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2368 to 1270. [2022-01-28 14:37:32,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 1269 states have (on average 3.909377462568952) internal successors, (4961), 1269 states have internal predecessors, (4961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:32,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 4961 transitions. [2022-01-28 14:37:32,781 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 4961 transitions. Word has length 25 [2022-01-28 14:37:32,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:32,781 INFO L470 AbstractCegarLoop]: Abstraction has 1270 states and 4961 transitions. [2022-01-28 14:37:32,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:32,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 4961 transitions. [2022-01-28 14:37:32,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:32,783 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:32,783 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:32,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable488 [2022-01-28 14:37:32,783 INFO L402 AbstractCegarLoop]: === Iteration 490 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:32,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:32,783 INFO L85 PathProgramCache]: Analyzing trace with hash -546880333, now seen corresponding path program 485 times [2022-01-28 14:37:32,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:32,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104384655] [2022-01-28 14:37:32,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:32,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:32,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:32,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:32,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:32,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104384655] [2022-01-28 14:37:32,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104384655] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:32,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:32,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:32,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053308234] [2022-01-28 14:37:32,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:32,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:32,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:32,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:32,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:32,869 INFO L87 Difference]: Start difference. First operand 1270 states and 4961 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:32,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:32,957 INFO L93 Difference]: Finished difference Result 2617 states and 9527 transitions. [2022-01-28 14:37:32,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:32,957 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:32,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:32,963 INFO L225 Difference]: With dead ends: 2617 [2022-01-28 14:37:32,963 INFO L226 Difference]: Without dead ends: 2428 [2022-01-28 14:37:32,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:32,964 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 114 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:32,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 146 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:32,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2428 states. [2022-01-28 14:37:32,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2428 to 1300. [2022-01-28 14:37:32,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1300 states, 1299 states have (on average 3.890685142417244) internal successors, (5054), 1299 states have internal predecessors, (5054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:32,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 5054 transitions. [2022-01-28 14:37:32,994 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 5054 transitions. Word has length 25 [2022-01-28 14:37:32,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:32,994 INFO L470 AbstractCegarLoop]: Abstraction has 1300 states and 5054 transitions. [2022-01-28 14:37:32,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:32,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 5054 transitions. [2022-01-28 14:37:32,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:32,997 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:32,997 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:32,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable489 [2022-01-28 14:37:32,997 INFO L402 AbstractCegarLoop]: === Iteration 491 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:32,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:32,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1704749969, now seen corresponding path program 486 times [2022-01-28 14:37:32,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:32,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3749250] [2022-01-28 14:37:32,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:32,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:32,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:33,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:33,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:33,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3749250] [2022-01-28 14:37:33,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3749250] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:33,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:33,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:33,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507552174] [2022-01-28 14:37:33,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:33,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:33,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:33,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:33,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:33,101 INFO L87 Difference]: Start difference. First operand 1300 states and 5054 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:33,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:33,185 INFO L93 Difference]: Finished difference Result 2615 states and 9492 transitions. [2022-01-28 14:37:33,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:33,186 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:33,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:33,191 INFO L225 Difference]: With dead ends: 2615 [2022-01-28 14:37:33,191 INFO L226 Difference]: Without dead ends: 2390 [2022-01-28 14:37:33,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:33,192 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 113 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:33,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 144 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:33,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2390 states. [2022-01-28 14:37:33,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2390 to 1262. [2022-01-28 14:37:33,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1262 states, 1261 states have (on average 3.915146708961142) internal successors, (4937), 1261 states have internal predecessors, (4937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:33,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 4937 transitions. [2022-01-28 14:37:33,219 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 4937 transitions. Word has length 25 [2022-01-28 14:37:33,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:33,219 INFO L470 AbstractCegarLoop]: Abstraction has 1262 states and 4937 transitions. [2022-01-28 14:37:33,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:33,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 4937 transitions. [2022-01-28 14:37:33,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:33,221 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:33,222 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:33,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable490 [2022-01-28 14:37:33,222 INFO L402 AbstractCegarLoop]: === Iteration 492 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:33,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:33,222 INFO L85 PathProgramCache]: Analyzing trace with hash 768960337, now seen corresponding path program 487 times [2022-01-28 14:37:33,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:33,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389137681] [2022-01-28 14:37:33,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:33,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:33,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:33,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:33,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:33,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389137681] [2022-01-28 14:37:33,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389137681] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:33,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:33,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:33,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591605102] [2022-01-28 14:37:33,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:33,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:33,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:33,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:33,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:33,310 INFO L87 Difference]: Start difference. First operand 1262 states and 4937 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:33,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:33,416 INFO L93 Difference]: Finished difference Result 2539 states and 9248 transitions. [2022-01-28 14:37:33,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:33,416 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:33,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:33,421 INFO L225 Difference]: With dead ends: 2539 [2022-01-28 14:37:33,421 INFO L226 Difference]: Without dead ends: 2380 [2022-01-28 14:37:33,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:33,421 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 111 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:33,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 147 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:33,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2380 states. [2022-01-28 14:37:33,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2380 to 1286. [2022-01-28 14:37:33,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1285 states have (on average 3.9073929961089493) internal successors, (5021), 1285 states have internal predecessors, (5021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:33,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 5021 transitions. [2022-01-28 14:37:33,443 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 5021 transitions. Word has length 25 [2022-01-28 14:37:33,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:33,443 INFO L470 AbstractCegarLoop]: Abstraction has 1286 states and 5021 transitions. [2022-01-28 14:37:33,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:33,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 5021 transitions. [2022-01-28 14:37:33,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:33,445 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:33,445 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:33,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable491 [2022-01-28 14:37:33,445 INFO L402 AbstractCegarLoop]: === Iteration 493 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:33,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:33,446 INFO L85 PathProgramCache]: Analyzing trace with hash -820974413, now seen corresponding path program 488 times [2022-01-28 14:37:33,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:33,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034870384] [2022-01-28 14:37:33,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:33,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:33,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:33,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:33,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:33,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034870384] [2022-01-28 14:37:33,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034870384] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:33,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:33,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:33,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011189186] [2022-01-28 14:37:33,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:33,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:33,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:33,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:33,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:33,527 INFO L87 Difference]: Start difference. First operand 1286 states and 5021 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:33,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:33,604 INFO L93 Difference]: Finished difference Result 2569 states and 9341 transitions. [2022-01-28 14:37:33,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:33,604 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:33,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:33,610 INFO L225 Difference]: With dead ends: 2569 [2022-01-28 14:37:33,610 INFO L226 Difference]: Without dead ends: 2364 [2022-01-28 14:37:33,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:33,610 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 114 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:33,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 146 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:33,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2364 states. [2022-01-28 14:37:33,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2364 to 1270. [2022-01-28 14:37:33,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 1269 states have (on average 3.9125295508274234) internal successors, (4965), 1269 states have internal predecessors, (4965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:33,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 4965 transitions. [2022-01-28 14:37:33,637 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 4965 transitions. Word has length 25 [2022-01-28 14:37:33,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:33,637 INFO L470 AbstractCegarLoop]: Abstraction has 1270 states and 4965 transitions. [2022-01-28 14:37:33,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:33,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 4965 transitions. [2022-01-28 14:37:33,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:33,640 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:33,640 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:33,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable492 [2022-01-28 14:37:33,640 INFO L402 AbstractCegarLoop]: === Iteration 494 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:33,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:33,640 INFO L85 PathProgramCache]: Analyzing trace with hash -919285935, now seen corresponding path program 489 times [2022-01-28 14:37:33,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:33,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118160177] [2022-01-28 14:37:33,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:33,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:33,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:33,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:33,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118160177] [2022-01-28 14:37:33,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118160177] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:33,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:33,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:33,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354332030] [2022-01-28 14:37:33,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:33,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:33,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:33,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:33,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:33,728 INFO L87 Difference]: Start difference. First operand 1270 states and 4965 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:33,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:33,807 INFO L93 Difference]: Finished difference Result 2533 states and 9223 transitions. [2022-01-28 14:37:33,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:33,807 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:33,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:33,812 INFO L225 Difference]: With dead ends: 2533 [2022-01-28 14:37:33,812 INFO L226 Difference]: Without dead ends: 2374 [2022-01-28 14:37:33,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:33,812 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 99 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:33,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 177 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:33,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2374 states. [2022-01-28 14:37:33,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2374 to 1286. [2022-01-28 14:37:33,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1285 states have (on average 3.901167315175097) internal successors, (5013), 1285 states have internal predecessors, (5013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:33,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 5013 transitions. [2022-01-28 14:37:33,837 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 5013 transitions. Word has length 25 [2022-01-28 14:37:33,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:33,837 INFO L470 AbstractCegarLoop]: Abstraction has 1286 states and 5013 transitions. [2022-01-28 14:37:33,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:33,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 5013 transitions. [2022-01-28 14:37:33,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:33,839 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:33,839 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:33,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable493 [2022-01-28 14:37:33,840 INFO L402 AbstractCegarLoop]: === Iteration 495 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:33,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:33,840 INFO L85 PathProgramCache]: Analyzing trace with hash 761210705, now seen corresponding path program 490 times [2022-01-28 14:37:33,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:33,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105414785] [2022-01-28 14:37:33,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:33,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:33,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:33,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:33,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:33,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105414785] [2022-01-28 14:37:33,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105414785] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:33,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:33,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:33,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745517792] [2022-01-28 14:37:33,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:33,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:33,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:33,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:33,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:33,930 INFO L87 Difference]: Start difference. First operand 1286 states and 5013 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:34,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:34,008 INFO L93 Difference]: Finished difference Result 2557 states and 9299 transitions. [2022-01-28 14:37:34,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:34,008 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:34,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:34,012 INFO L225 Difference]: With dead ends: 2557 [2022-01-28 14:37:34,013 INFO L226 Difference]: Without dead ends: 2358 [2022-01-28 14:37:34,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:34,013 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 102 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:34,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 146 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:34,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2358 states. [2022-01-28 14:37:34,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2358 to 1270. [2022-01-28 14:37:34,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 1269 states have (on average 3.906225374310481) internal successors, (4957), 1269 states have internal predecessors, (4957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:34,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 4957 transitions. [2022-01-28 14:37:34,035 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 4957 transitions. Word has length 25 [2022-01-28 14:37:34,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:34,035 INFO L470 AbstractCegarLoop]: Abstraction has 1270 states and 4957 transitions. [2022-01-28 14:37:34,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:34,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 4957 transitions. [2022-01-28 14:37:34,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:34,037 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:34,037 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:34,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable494 [2022-01-28 14:37:34,038 INFO L402 AbstractCegarLoop]: === Iteration 496 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:34,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:34,038 INFO L85 PathProgramCache]: Analyzing trace with hash 497876019, now seen corresponding path program 491 times [2022-01-28 14:37:34,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:34,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799346958] [2022-01-28 14:37:34,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:34,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:34,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:34,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:34,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:34,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799346958] [2022-01-28 14:37:34,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799346958] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:34,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:34,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:34,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348408910] [2022-01-28 14:37:34,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:34,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:34,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:34,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:34,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:34,117 INFO L87 Difference]: Start difference. First operand 1270 states and 4957 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:34,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:34,198 INFO L93 Difference]: Finished difference Result 2605 states and 9485 transitions. [2022-01-28 14:37:34,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:34,198 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:34,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:34,203 INFO L225 Difference]: With dead ends: 2605 [2022-01-28 14:37:34,203 INFO L226 Difference]: Without dead ends: 2416 [2022-01-28 14:37:34,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:34,203 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 103 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:34,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 159 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:34,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states. [2022-01-28 14:37:34,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 1298. [2022-01-28 14:37:34,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1298 states, 1297 states have (on average 3.889745566692367) internal successors, (5045), 1297 states have internal predecessors, (5045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:34,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 5045 transitions. [2022-01-28 14:37:34,226 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 5045 transitions. Word has length 25 [2022-01-28 14:37:34,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:34,226 INFO L470 AbstractCegarLoop]: Abstraction has 1298 states and 5045 transitions. [2022-01-28 14:37:34,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:34,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 5045 transitions. [2022-01-28 14:37:34,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:34,228 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:34,228 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:34,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable495 [2022-01-28 14:37:34,228 INFO L402 AbstractCegarLoop]: === Iteration 497 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:34,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:34,228 INFO L85 PathProgramCache]: Analyzing trace with hash -894268527, now seen corresponding path program 492 times [2022-01-28 14:37:34,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:34,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685341517] [2022-01-28 14:37:34,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:34,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:34,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:34,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:34,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:34,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685341517] [2022-01-28 14:37:34,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685341517] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:34,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:34,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:34,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904817902] [2022-01-28 14:37:34,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:34,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:34,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:34,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:34,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:34,340 INFO L87 Difference]: Start difference. First operand 1298 states and 5045 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:34,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:34,479 INFO L93 Difference]: Finished difference Result 2599 states and 9440 transitions. [2022-01-28 14:37:34,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:34,479 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:34,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:34,484 INFO L225 Difference]: With dead ends: 2599 [2022-01-28 14:37:34,484 INFO L226 Difference]: Without dead ends: 2380 [2022-01-28 14:37:34,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:34,484 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 97 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:34,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 167 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:34,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2380 states. [2022-01-28 14:37:34,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2380 to 1262. [2022-01-28 14:37:34,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1262 states, 1261 states have (on average 3.9119746233148294) internal successors, (4933), 1261 states have internal predecessors, (4933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:34,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 4933 transitions. [2022-01-28 14:37:34,505 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 4933 transitions. Word has length 25 [2022-01-28 14:37:34,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:34,505 INFO L470 AbstractCegarLoop]: Abstraction has 1262 states and 4933 transitions. [2022-01-28 14:37:34,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:34,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 4933 transitions. [2022-01-28 14:37:34,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:34,507 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:34,507 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:34,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable496 [2022-01-28 14:37:34,507 INFO L402 AbstractCegarLoop]: === Iteration 498 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:34,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:34,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1156965299, now seen corresponding path program 493 times [2022-01-28 14:37:34,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:34,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900685830] [2022-01-28 14:37:34,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:34,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:34,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:34,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:34,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:34,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900685830] [2022-01-28 14:37:34,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900685830] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:34,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:34,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:34,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574889770] [2022-01-28 14:37:34,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:34,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:34,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:34,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:34,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:34,615 INFO L87 Difference]: Start difference. First operand 1262 states and 4933 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:34,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:34,700 INFO L93 Difference]: Finished difference Result 2535 states and 9234 transitions. [2022-01-28 14:37:34,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:34,701 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:34,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:34,706 INFO L225 Difference]: With dead ends: 2535 [2022-01-28 14:37:34,706 INFO L226 Difference]: Without dead ends: 2376 [2022-01-28 14:37:34,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:34,706 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 103 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:34,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 159 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:34,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2376 states. [2022-01-28 14:37:34,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2376 to 1286. [2022-01-28 14:37:34,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1285 states have (on average 3.9042801556420232) internal successors, (5017), 1285 states have internal predecessors, (5017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:34,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 5017 transitions. [2022-01-28 14:37:34,728 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 5017 transitions. Word has length 25 [2022-01-28 14:37:34,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:34,728 INFO L470 AbstractCegarLoop]: Abstraction has 1286 states and 5017 transitions. [2022-01-28 14:37:34,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:34,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 5017 transitions. [2022-01-28 14:37:34,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:34,730 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:34,730 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:34,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable497 [2022-01-28 14:37:34,730 INFO L402 AbstractCegarLoop]: === Iteration 499 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:34,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:34,731 INFO L85 PathProgramCache]: Analyzing trace with hash -2129704013, now seen corresponding path program 494 times [2022-01-28 14:37:34,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:34,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529311500] [2022-01-28 14:37:34,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:34,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:34,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:34,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:34,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:34,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529311500] [2022-01-28 14:37:34,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529311500] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:34,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:34,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:34,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497041454] [2022-01-28 14:37:34,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:34,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:34,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:34,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:34,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:34,816 INFO L87 Difference]: Start difference. First operand 1286 states and 5017 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:34,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:34,900 INFO L93 Difference]: Finished difference Result 2563 states and 9322 transitions. [2022-01-28 14:37:34,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:34,900 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:34,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:34,905 INFO L225 Difference]: With dead ends: 2563 [2022-01-28 14:37:34,905 INFO L226 Difference]: Without dead ends: 2360 [2022-01-28 14:37:34,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:34,905 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 97 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:34,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 168 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:34,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2360 states. [2022-01-28 14:37:34,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2360 to 1270. [2022-01-28 14:37:34,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 1269 states have (on average 3.909377462568952) internal successors, (4961), 1269 states have internal predecessors, (4961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:34,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 4961 transitions. [2022-01-28 14:37:34,927 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 4961 transitions. Word has length 25 [2022-01-28 14:37:34,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:34,927 INFO L470 AbstractCegarLoop]: Abstraction has 1270 states and 4961 transitions. [2022-01-28 14:37:34,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:34,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 4961 transitions. [2022-01-28 14:37:34,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:34,929 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:34,929 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:34,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable498 [2022-01-28 14:37:34,929 INFO L402 AbstractCegarLoop]: === Iteration 500 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:34,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:34,929 INFO L85 PathProgramCache]: Analyzing trace with hash 310168337, now seen corresponding path program 495 times [2022-01-28 14:37:34,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:34,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585652118] [2022-01-28 14:37:34,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:34,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:35,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:35,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:35,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585652118] [2022-01-28 14:37:35,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585652118] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:35,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:35,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:35,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425429533] [2022-01-28 14:37:35,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:35,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:35,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:35,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:35,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:35,013 INFO L87 Difference]: Start difference. First operand 1270 states and 4961 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:35,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:35,089 INFO L93 Difference]: Finished difference Result 2531 states and 9214 transitions. [2022-01-28 14:37:35,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:35,089 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:35,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:35,094 INFO L225 Difference]: With dead ends: 2531 [2022-01-28 14:37:35,094 INFO L226 Difference]: Without dead ends: 2372 [2022-01-28 14:37:35,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:35,094 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 103 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:35,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 160 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:35,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2372 states. [2022-01-28 14:37:35,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2372 to 1286. [2022-01-28 14:37:35,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1285 states have (on average 3.898054474708171) internal successors, (5009), 1285 states have internal predecessors, (5009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:35,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 5009 transitions. [2022-01-28 14:37:35,116 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 5009 transitions. Word has length 25 [2022-01-28 14:37:35,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:35,116 INFO L470 AbstractCegarLoop]: Abstraction has 1286 states and 5009 transitions. [2022-01-28 14:37:35,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:35,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 5009 transitions. [2022-01-28 14:37:35,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:35,118 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:35,118 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:35,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable499 [2022-01-28 14:37:35,118 INFO L402 AbstractCegarLoop]: === Iteration 501 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:35,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:35,118 INFO L85 PathProgramCache]: Analyzing trace with hash 280308659, now seen corresponding path program 496 times [2022-01-28 14:37:35,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:35,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079876737] [2022-01-28 14:37:35,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:35,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:35,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:35,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:35,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:35,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079876737] [2022-01-28 14:37:35,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079876737] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:35,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:35,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:35,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80935791] [2022-01-28 14:37:35,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:35,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:35,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:35,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:35,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:35,202 INFO L87 Difference]: Start difference. First operand 1286 states and 5009 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:35,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:35,301 INFO L93 Difference]: Finished difference Result 2555 states and 9290 transitions. [2022-01-28 14:37:35,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:35,301 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:35,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:35,306 INFO L225 Difference]: With dead ends: 2555 [2022-01-28 14:37:35,306 INFO L226 Difference]: Without dead ends: 2356 [2022-01-28 14:37:35,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:35,306 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 92 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:35,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 184 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:35,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2356 states. [2022-01-28 14:37:35,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2356 to 1270. [2022-01-28 14:37:35,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 1269 states have (on average 3.9030732860520096) internal successors, (4953), 1269 states have internal predecessors, (4953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:35,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 4953 transitions. [2022-01-28 14:37:35,347 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 4953 transitions. Word has length 25 [2022-01-28 14:37:35,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:35,348 INFO L470 AbstractCegarLoop]: Abstraction has 1270 states and 4953 transitions. [2022-01-28 14:37:35,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:35,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 4953 transitions. [2022-01-28 14:37:35,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:35,350 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:35,350 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:35,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable500 [2022-01-28 14:37:35,350 INFO L402 AbstractCegarLoop]: === Iteration 502 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:35,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:35,351 INFO L85 PathProgramCache]: Analyzing trace with hash -2080136269, now seen corresponding path program 497 times [2022-01-28 14:37:35,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:35,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242103512] [2022-01-28 14:37:35,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:35,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:35,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:35,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:35,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242103512] [2022-01-28 14:37:35,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242103512] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:35,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:35,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:35,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563473812] [2022-01-28 14:37:35,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:35,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:35,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:35,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:35,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:35,432 INFO L87 Difference]: Start difference. First operand 1270 states and 4953 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:35,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:35,504 INFO L93 Difference]: Finished difference Result 2599 states and 9466 transitions. [2022-01-28 14:37:35,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:35,504 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:35,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:35,509 INFO L225 Difference]: With dead ends: 2599 [2022-01-28 14:37:35,509 INFO L226 Difference]: Without dead ends: 2412 [2022-01-28 14:37:35,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:35,510 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 108 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:35,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 144 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:35,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2022-01-28 14:37:35,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 1298. [2022-01-28 14:37:35,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1298 states, 1297 states have (on average 3.8866615265998457) internal successors, (5041), 1297 states have internal predecessors, (5041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:35,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 5041 transitions. [2022-01-28 14:37:35,535 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 5041 transitions. Word has length 25 [2022-01-28 14:37:35,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:35,535 INFO L470 AbstractCegarLoop]: Abstraction has 1298 states and 5041 transitions. [2022-01-28 14:37:35,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:35,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 5041 transitions. [2022-01-28 14:37:35,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:35,537 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:35,537 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:35,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable501 [2022-01-28 14:37:35,537 INFO L402 AbstractCegarLoop]: === Iteration 503 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:35,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:35,537 INFO L85 PathProgramCache]: Analyzing trace with hash 171494033, now seen corresponding path program 498 times [2022-01-28 14:37:35,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:35,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836955328] [2022-01-28 14:37:35,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:35,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:35,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:35,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:35,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836955328] [2022-01-28 14:37:35,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836955328] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:35,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:35,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:35,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777182095] [2022-01-28 14:37:35,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:35,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:35,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:35,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:35,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:35,621 INFO L87 Difference]: Start difference. First operand 1298 states and 5041 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:35,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:35,716 INFO L93 Difference]: Finished difference Result 2595 states and 9426 transitions. [2022-01-28 14:37:35,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:35,716 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:35,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:35,721 INFO L225 Difference]: With dead ends: 2595 [2022-01-28 14:37:35,722 INFO L226 Difference]: Without dead ends: 2376 [2022-01-28 14:37:35,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:35,722 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 106 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:35,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 144 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:35,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2376 states. [2022-01-28 14:37:35,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2376 to 1262. [2022-01-28 14:37:35,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1262 states, 1261 states have (on average 3.908802537668517) internal successors, (4929), 1261 states have internal predecessors, (4929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:35,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 4929 transitions. [2022-01-28 14:37:35,746 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 4929 transitions. Word has length 25 [2022-01-28 14:37:35,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:35,746 INFO L470 AbstractCegarLoop]: Abstraction has 1262 states and 4929 transitions. [2022-01-28 14:37:35,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:35,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 4929 transitions. [2022-01-28 14:37:35,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:35,749 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:35,749 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:35,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable502 [2022-01-28 14:37:35,749 INFO L402 AbstractCegarLoop]: === Iteration 504 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:35,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:35,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1881069589, now seen corresponding path program 499 times [2022-01-28 14:37:35,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:35,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989106357] [2022-01-28 14:37:35,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:35,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:35,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:35,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:35,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989106357] [2022-01-28 14:37:35,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989106357] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:35,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:35,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:35,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603323387] [2022-01-28 14:37:35,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:35,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:35,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:35,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:35,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:35,828 INFO L87 Difference]: Start difference. First operand 1262 states and 4929 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:35,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:35,902 INFO L93 Difference]: Finished difference Result 2671 states and 9756 transitions. [2022-01-28 14:37:35,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:35,902 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:35,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:35,908 INFO L225 Difference]: With dead ends: 2671 [2022-01-28 14:37:35,908 INFO L226 Difference]: Without dead ends: 2482 [2022-01-28 14:37:35,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:35,908 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 120 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:35,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 143 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:35,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2482 states. [2022-01-28 14:37:35,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2482 to 1306. [2022-01-28 14:37:35,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1306 states, 1305 states have (on average 3.8980842911877396) internal successors, (5087), 1305 states have internal predecessors, (5087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:35,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 5087 transitions. [2022-01-28 14:37:35,932 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 5087 transitions. Word has length 25 [2022-01-28 14:37:35,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:35,932 INFO L470 AbstractCegarLoop]: Abstraction has 1306 states and 5087 transitions. [2022-01-28 14:37:35,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:35,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 5087 transitions. [2022-01-28 14:37:35,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:35,934 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:35,934 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:35,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable503 [2022-01-28 14:37:35,934 INFO L402 AbstractCegarLoop]: === Iteration 505 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:35,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:35,934 INFO L85 PathProgramCache]: Analyzing trace with hash -162267405, now seen corresponding path program 500 times [2022-01-28 14:37:35,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:35,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337407440] [2022-01-28 14:37:35,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:35,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:35,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:36,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:36,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:36,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337407440] [2022-01-28 14:37:36,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337407440] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:36,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:36,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:36,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719518433] [2022-01-28 14:37:36,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:36,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:36,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:36,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:36,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:36,010 INFO L87 Difference]: Start difference. First operand 1306 states and 5087 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:36,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:36,079 INFO L93 Difference]: Finished difference Result 2669 states and 9721 transitions. [2022-01-28 14:37:36,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:36,080 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:36,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:36,084 INFO L225 Difference]: With dead ends: 2669 [2022-01-28 14:37:36,084 INFO L226 Difference]: Without dead ends: 2452 [2022-01-28 14:37:36,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:36,085 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 109 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:36,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 144 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:36,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2452 states. [2022-01-28 14:37:36,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2452 to 1276. [2022-01-28 14:37:36,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1276 states, 1275 states have (on average 3.9058823529411764) internal successors, (4980), 1275 states have internal predecessors, (4980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:36,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 4980 transitions. [2022-01-28 14:37:36,107 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 4980 transitions. Word has length 25 [2022-01-28 14:37:36,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:36,107 INFO L470 AbstractCegarLoop]: Abstraction has 1276 states and 4980 transitions. [2022-01-28 14:37:36,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:36,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 4980 transitions. [2022-01-28 14:37:36,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:36,109 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:36,109 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:36,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable504 [2022-01-28 14:37:36,109 INFO L402 AbstractCegarLoop]: === Iteration 506 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:36,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:36,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1034272627, now seen corresponding path program 501 times [2022-01-28 14:37:36,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:36,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100585231] [2022-01-28 14:37:36,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:36,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:36,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:36,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:36,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:36,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100585231] [2022-01-28 14:37:36,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100585231] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:36,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:36,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:36,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477351461] [2022-01-28 14:37:36,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:36,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:36,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:36,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:36,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:36,192 INFO L87 Difference]: Start difference. First operand 1276 states and 4980 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:36,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:36,271 INFO L93 Difference]: Finished difference Result 2665 states and 9723 transitions. [2022-01-28 14:37:36,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:36,271 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:36,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:36,276 INFO L225 Difference]: With dead ends: 2665 [2022-01-28 14:37:36,276 INFO L226 Difference]: Without dead ends: 2476 [2022-01-28 14:37:36,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:36,277 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 102 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:36,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 151 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:36,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2476 states. [2022-01-28 14:37:36,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2476 to 1304. [2022-01-28 14:37:36,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1304 states, 1303 states have (on average 3.889485801995395) internal successors, (5068), 1303 states have internal predecessors, (5068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:36,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 5068 transitions. [2022-01-28 14:37:36,302 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 5068 transitions. Word has length 25 [2022-01-28 14:37:36,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:36,302 INFO L470 AbstractCegarLoop]: Abstraction has 1304 states and 5068 transitions. [2022-01-28 14:37:36,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:36,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 5068 transitions. [2022-01-28 14:37:36,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:36,304 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:36,304 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:36,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable505 [2022-01-28 14:37:36,304 INFO L402 AbstractCegarLoop]: === Iteration 507 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:36,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:36,304 INFO L85 PathProgramCache]: Analyzing trace with hash -2068228237, now seen corresponding path program 502 times [2022-01-28 14:37:36,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:36,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769508560] [2022-01-28 14:37:36,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:36,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:36,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:36,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:36,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:36,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769508560] [2022-01-28 14:37:36,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769508560] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:36,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:36,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:36,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756558298] [2022-01-28 14:37:36,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:36,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:36,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:36,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:36,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:36,424 INFO L87 Difference]: Start difference. First operand 1304 states and 5068 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:36,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:36,523 INFO L93 Difference]: Finished difference Result 2659 states and 9678 transitions. [2022-01-28 14:37:36,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:36,524 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:36,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:36,528 INFO L225 Difference]: With dead ends: 2659 [2022-01-28 14:37:36,528 INFO L226 Difference]: Without dead ends: 2448 [2022-01-28 14:37:36,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:36,529 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 118 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:36,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 142 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:36,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2448 states. [2022-01-28 14:37:36,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2448 to 1276. [2022-01-28 14:37:36,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1276 states, 1275 states have (on average 3.894901960784314) internal successors, (4966), 1275 states have internal predecessors, (4966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:36,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 4966 transitions. [2022-01-28 14:37:36,551 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 4966 transitions. Word has length 25 [2022-01-28 14:37:36,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:36,551 INFO L470 AbstractCegarLoop]: Abstraction has 1276 states and 4966 transitions. [2022-01-28 14:37:36,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:36,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 4966 transitions. [2022-01-28 14:37:36,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:36,553 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:36,553 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:36,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable506 [2022-01-28 14:37:36,553 INFO L402 AbstractCegarLoop]: === Iteration 508 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:36,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:36,553 INFO L85 PathProgramCache]: Analyzing trace with hash 2016620241, now seen corresponding path program 503 times [2022-01-28 14:37:36,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:36,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067113905] [2022-01-28 14:37:36,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:36,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:36,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:36,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:36,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067113905] [2022-01-28 14:37:36,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067113905] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:36,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:36,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:36,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726799700] [2022-01-28 14:37:36,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:36,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:36,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:36,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:36,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:36,699 INFO L87 Difference]: Start difference. First operand 1276 states and 4966 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:36,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:36,802 INFO L93 Difference]: Finished difference Result 2661 states and 9699 transitions. [2022-01-28 14:37:36,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:36,802 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:36,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:36,807 INFO L225 Difference]: With dead ends: 2661 [2022-01-28 14:37:36,807 INFO L226 Difference]: Without dead ends: 2474 [2022-01-28 14:37:36,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:36,808 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 108 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:36,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 145 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:36,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2474 states. [2022-01-28 14:37:36,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2474 to 1304. [2022-01-28 14:37:36,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1304 states, 1303 states have (on average 3.878741366078281) internal successors, (5054), 1303 states have internal predecessors, (5054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:36,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 5054 transitions. [2022-01-28 14:37:36,841 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 5054 transitions. Word has length 25 [2022-01-28 14:37:36,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:36,841 INFO L470 AbstractCegarLoop]: Abstraction has 1304 states and 5054 transitions. [2022-01-28 14:37:36,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:36,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 5054 transitions. [2022-01-28 14:37:36,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:36,843 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:36,843 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:36,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable507 [2022-01-28 14:37:36,844 INFO L402 AbstractCegarLoop]: === Iteration 509 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:36,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:36,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1197284429, now seen corresponding path program 504 times [2022-01-28 14:37:36,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:36,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141755241] [2022-01-28 14:37:36,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:36,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:36,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:36,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:36,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:36,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141755241] [2022-01-28 14:37:36,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141755241] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:36,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:36,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:36,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173442305] [2022-01-28 14:37:36,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:36,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:36,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:36,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:36,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:36,960 INFO L87 Difference]: Start difference. First operand 1304 states and 5054 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:37,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:37,037 INFO L93 Difference]: Finished difference Result 2657 states and 9659 transitions. [2022-01-28 14:37:37,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:37,037 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:37,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:37,042 INFO L225 Difference]: With dead ends: 2657 [2022-01-28 14:37:37,042 INFO L226 Difference]: Without dead ends: 2428 [2022-01-28 14:37:37,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:37,042 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 115 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:37,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 135 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:37,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2428 states. [2022-01-28 14:37:37,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2428 to 1258. [2022-01-28 14:37:37,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 1257 states have (on average 3.913285600636436) internal successors, (4919), 1257 states have internal predecessors, (4919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:37,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 4919 transitions. [2022-01-28 14:37:37,065 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 4919 transitions. Word has length 25 [2022-01-28 14:37:37,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:37,065 INFO L470 AbstractCegarLoop]: Abstraction has 1258 states and 4919 transitions. [2022-01-28 14:37:37,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:37,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 4919 transitions. [2022-01-28 14:37:37,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:37,067 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:37,067 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:37,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable508 [2022-01-28 14:37:37,067 INFO L402 AbstractCegarLoop]: === Iteration 510 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:37,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:37,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1335503151, now seen corresponding path program 505 times [2022-01-28 14:37:37,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:37,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216078978] [2022-01-28 14:37:37,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:37,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:37,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:37,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:37,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:37,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216078978] [2022-01-28 14:37:37,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216078978] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:37,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:37,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:37,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28053886] [2022-01-28 14:37:37,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:37,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:37,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:37,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:37,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:37,208 INFO L87 Difference]: Start difference. First operand 1258 states and 4919 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:37,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:37,310 INFO L93 Difference]: Finished difference Result 2515 states and 9144 transitions. [2022-01-28 14:37:37,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:37,310 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:37,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:37,315 INFO L225 Difference]: With dead ends: 2515 [2022-01-28 14:37:37,315 INFO L226 Difference]: Without dead ends: 2356 [2022-01-28 14:37:37,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:37,315 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 103 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:37,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 165 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:37,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2356 states. [2022-01-28 14:37:37,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2356 to 1274. [2022-01-28 14:37:37,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 1273 states have (on average 3.9018067556952083) internal successors, (4967), 1273 states have internal predecessors, (4967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:37,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 4967 transitions. [2022-01-28 14:37:37,340 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 4967 transitions. Word has length 25 [2022-01-28 14:37:37,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:37,341 INFO L470 AbstractCegarLoop]: Abstraction has 1274 states and 4967 transitions. [2022-01-28 14:37:37,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:37,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 4967 transitions. [2022-01-28 14:37:37,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:37,342 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:37,342 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:37,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable509 [2022-01-28 14:37:37,343 INFO L402 AbstractCegarLoop]: === Iteration 511 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:37,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:37,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1369529395, now seen corresponding path program 506 times [2022-01-28 14:37:37,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:37,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388311289] [2022-01-28 14:37:37,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:37,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:37,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:37,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:37,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:37,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388311289] [2022-01-28 14:37:37,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388311289] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:37,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:37,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:37,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059448766] [2022-01-28 14:37:37,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:37,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:37,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:37,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:37,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:37,461 INFO L87 Difference]: Start difference. First operand 1274 states and 4967 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:37,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:37,575 INFO L93 Difference]: Finished difference Result 2545 states and 9237 transitions. [2022-01-28 14:37:37,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:37,575 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:37,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:37,581 INFO L225 Difference]: With dead ends: 2545 [2022-01-28 14:37:37,581 INFO L226 Difference]: Without dead ends: 2340 [2022-01-28 14:37:37,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:37,581 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 112 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:37,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 153 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:37,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2340 states. [2022-01-28 14:37:37,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2340 to 1258. [2022-01-28 14:37:37,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 1257 states have (on average 3.9069212410501195) internal successors, (4911), 1257 states have internal predecessors, (4911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:37,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 4911 transitions. [2022-01-28 14:37:37,606 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 4911 transitions. Word has length 25 [2022-01-28 14:37:37,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:37,606 INFO L470 AbstractCegarLoop]: Abstraction has 1258 states and 4911 transitions. [2022-01-28 14:37:37,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:37,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 4911 transitions. [2022-01-28 14:37:37,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:37,608 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:37,608 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:37,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable510 [2022-01-28 14:37:37,608 INFO L402 AbstractCegarLoop]: === Iteration 512 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:37,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:37,608 INFO L85 PathProgramCache]: Analyzing trace with hash -254440525, now seen corresponding path program 507 times [2022-01-28 14:37:37,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:37,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155737631] [2022-01-28 14:37:37,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:37,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:37,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:37,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:37,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155737631] [2022-01-28 14:37:37,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155737631] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:37,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:37,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:37,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79012189] [2022-01-28 14:37:37,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:37,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:37,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:37,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:37,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:37,689 INFO L87 Difference]: Start difference. First operand 1258 states and 4911 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:37,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:37,763 INFO L93 Difference]: Finished difference Result 2513 states and 9131 transitions. [2022-01-28 14:37:37,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:37,763 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:37,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:37,768 INFO L225 Difference]: With dead ends: 2513 [2022-01-28 14:37:37,769 INFO L226 Difference]: Without dead ends: 2354 [2022-01-28 14:37:37,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:37,769 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 114 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:37,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 158 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:37,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2354 states. [2022-01-28 14:37:37,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2354 to 1274. [2022-01-28 14:37:37,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 1273 states have (on average 3.8955223880597014) internal successors, (4959), 1273 states have internal predecessors, (4959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:37,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 4959 transitions. [2022-01-28 14:37:37,793 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 4959 transitions. Word has length 25 [2022-01-28 14:37:37,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:37,793 INFO L470 AbstractCegarLoop]: Abstraction has 1274 states and 4959 transitions. [2022-01-28 14:37:37,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:37,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 4959 transitions. [2022-01-28 14:37:37,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:37,795 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:37,795 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:37,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable511 [2022-01-28 14:37:37,795 INFO L402 AbstractCegarLoop]: === Iteration 513 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:37,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:37,795 INFO L85 PathProgramCache]: Analyzing trace with hash 753857459, now seen corresponding path program 508 times [2022-01-28 14:37:37,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:37,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932699689] [2022-01-28 14:37:37,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:37,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:37,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:37,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:37,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:37,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932699689] [2022-01-28 14:37:37,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932699689] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:37,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:37,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:37,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219520746] [2022-01-28 14:37:37,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:37,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:37,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:37,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:37,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:37,907 INFO L87 Difference]: Start difference. First operand 1274 states and 4959 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:38,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:38,001 INFO L93 Difference]: Finished difference Result 2541 states and 9219 transitions. [2022-01-28 14:37:38,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:38,001 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:38,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:38,006 INFO L225 Difference]: With dead ends: 2541 [2022-01-28 14:37:38,006 INFO L226 Difference]: Without dead ends: 2338 [2022-01-28 14:37:38,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:38,007 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 120 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:38,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 134 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:38,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2338 states. [2022-01-28 14:37:38,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2338 to 1258. [2022-01-28 14:37:38,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 1257 states have (on average 3.9005568814638027) internal successors, (4903), 1257 states have internal predecessors, (4903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:38,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 4903 transitions. [2022-01-28 14:37:38,029 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 4903 transitions. Word has length 25 [2022-01-28 14:37:38,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:38,029 INFO L470 AbstractCegarLoop]: Abstraction has 1258 states and 4903 transitions. [2022-01-28 14:37:38,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:38,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 4903 transitions. [2022-01-28 14:37:38,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:38,031 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:38,031 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:38,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable512 [2022-01-28 14:37:38,031 INFO L402 AbstractCegarLoop]: === Iteration 514 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:38,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:38,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1162721429, now seen corresponding path program 509 times [2022-01-28 14:37:38,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:38,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145239114] [2022-01-28 14:37:38,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:38,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:38,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:38,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:38,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:38,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145239114] [2022-01-28 14:37:38,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145239114] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:38,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:38,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:38,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017148742] [2022-01-28 14:37:38,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:38,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:38,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:38,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:38,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:38,108 INFO L87 Difference]: Start difference. First operand 1258 states and 4903 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:38,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:38,182 INFO L93 Difference]: Finished difference Result 2587 states and 9400 transitions. [2022-01-28 14:37:38,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:38,182 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:38,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:38,186 INFO L225 Difference]: With dead ends: 2587 [2022-01-28 14:37:38,187 INFO L226 Difference]: Without dead ends: 2398 [2022-01-28 14:37:38,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:38,187 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 110 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:38,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 147 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:38,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2398 states. [2022-01-28 14:37:38,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2398 to 1288. [2022-01-28 14:37:38,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1288 states, 1287 states have (on average 3.8818958818958818) internal successors, (4996), 1287 states have internal predecessors, (4996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:38,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 4996 transitions. [2022-01-28 14:37:38,209 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 4996 transitions. Word has length 25 [2022-01-28 14:37:38,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:38,209 INFO L470 AbstractCegarLoop]: Abstraction has 1288 states and 4996 transitions. [2022-01-28 14:37:38,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:38,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 4996 transitions. [2022-01-28 14:37:38,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:38,211 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:38,211 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:38,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable513 [2022-01-28 14:37:38,211 INFO L402 AbstractCegarLoop]: === Iteration 515 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:38,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:38,211 INFO L85 PathProgramCache]: Analyzing trace with hash -880615565, now seen corresponding path program 510 times [2022-01-28 14:37:38,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:38,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789906919] [2022-01-28 14:37:38,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:38,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:38,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:38,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:38,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:38,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789906919] [2022-01-28 14:37:38,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789906919] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:38,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:38,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:38,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544853228] [2022-01-28 14:37:38,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:38,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:38,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:38,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:38,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:38,311 INFO L87 Difference]: Start difference. First operand 1288 states and 4996 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:38,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:38,413 INFO L93 Difference]: Finished difference Result 2585 states and 9365 transitions. [2022-01-28 14:37:38,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:38,413 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:38,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:38,418 INFO L225 Difference]: With dead ends: 2585 [2022-01-28 14:37:38,419 INFO L226 Difference]: Without dead ends: 2360 [2022-01-28 14:37:38,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:38,419 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 120 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:38,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 135 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:38,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2360 states. [2022-01-28 14:37:38,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2360 to 1250. [2022-01-28 14:37:38,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1249 states have (on average 3.9063250600480384) internal successors, (4879), 1249 states have internal predecessors, (4879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:38,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 4879 transitions. [2022-01-28 14:37:38,442 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 4879 transitions. Word has length 25 [2022-01-28 14:37:38,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:38,442 INFO L470 AbstractCegarLoop]: Abstraction has 1250 states and 4879 transitions. [2022-01-28 14:37:38,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:38,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 4879 transitions. [2022-01-28 14:37:38,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:38,443 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:38,443 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:38,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable514 [2022-01-28 14:37:38,444 INFO L402 AbstractCegarLoop]: === Iteration 516 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:38,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:38,444 INFO L85 PathProgramCache]: Analyzing trace with hash -242532655, now seen corresponding path program 511 times [2022-01-28 14:37:38,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:38,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489628964] [2022-01-28 14:37:38,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:38,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:38,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:38,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:38,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:38,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489628964] [2022-01-28 14:37:38,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489628964] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:38,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:38,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:38,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616358225] [2022-01-28 14:37:38,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:38,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:38,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:38,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:38,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:38,541 INFO L87 Difference]: Start difference. First operand 1250 states and 4879 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:38,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:38,641 INFO L93 Difference]: Finished difference Result 2481 states and 9013 transitions. [2022-01-28 14:37:38,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:38,641 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:38,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:38,646 INFO L225 Difference]: With dead ends: 2481 [2022-01-28 14:37:38,646 INFO L226 Difference]: Without dead ends: 2322 [2022-01-28 14:37:38,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:38,646 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 95 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:38,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 175 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:38,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2322 states. [2022-01-28 14:37:38,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2322 to 1274. [2022-01-28 14:37:38,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 1273 states have (on average 3.898664571877455) internal successors, (4963), 1273 states have internal predecessors, (4963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:38,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 4963 transitions. [2022-01-28 14:37:38,667 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 4963 transitions. Word has length 25 [2022-01-28 14:37:38,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:38,667 INFO L470 AbstractCegarLoop]: Abstraction has 1274 states and 4963 transitions. [2022-01-28 14:37:38,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:38,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 4963 transitions. [2022-01-28 14:37:38,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:38,669 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:38,669 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:38,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable515 [2022-01-28 14:37:38,669 INFO L402 AbstractCegarLoop]: === Iteration 517 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:38,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:38,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1832467405, now seen corresponding path program 512 times [2022-01-28 14:37:38,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:38,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41961954] [2022-01-28 14:37:38,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:38,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:38,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:38,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:38,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:38,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41961954] [2022-01-28 14:37:38,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41961954] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:38,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:38,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:38,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486879532] [2022-01-28 14:37:38,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:38,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:38,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:38,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:38,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:38,751 INFO L87 Difference]: Start difference. First operand 1274 states and 4963 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:38,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:38,838 INFO L93 Difference]: Finished difference Result 2511 states and 9106 transitions. [2022-01-28 14:37:38,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:38,838 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:38,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:38,842 INFO L225 Difference]: With dead ends: 2511 [2022-01-28 14:37:38,842 INFO L226 Difference]: Without dead ends: 2306 [2022-01-28 14:37:38,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:38,842 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 96 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:38,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 174 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:38,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2306 states. [2022-01-28 14:37:38,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2306 to 1258. [2022-01-28 14:37:38,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 1257 states have (on average 3.903739061256961) internal successors, (4907), 1257 states have internal predecessors, (4907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:38,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 4907 transitions. [2022-01-28 14:37:38,863 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 4907 transitions. Word has length 25 [2022-01-28 14:37:38,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:38,863 INFO L470 AbstractCegarLoop]: Abstraction has 1258 states and 4907 transitions. [2022-01-28 14:37:38,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:38,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 4907 transitions. [2022-01-28 14:37:38,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:38,865 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:38,865 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:38,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable516 [2022-01-28 14:37:38,865 INFO L402 AbstractCegarLoop]: === Iteration 518 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:38,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:38,865 INFO L85 PathProgramCache]: Analyzing trace with hash -192964911, now seen corresponding path program 513 times [2022-01-28 14:37:38,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:38,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001343830] [2022-01-28 14:37:38,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:38,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:38,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:38,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:38,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:38,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001343830] [2022-01-28 14:37:38,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001343830] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:38,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:38,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:38,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646952314] [2022-01-28 14:37:38,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:38,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:38,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:38,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:38,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:38,949 INFO L87 Difference]: Start difference. First operand 1258 states and 4907 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:39,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:39,017 INFO L93 Difference]: Finished difference Result 2435 states and 8848 transitions. [2022-01-28 14:37:39,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:39,017 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:39,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:39,022 INFO L225 Difference]: With dead ends: 2435 [2022-01-28 14:37:39,022 INFO L226 Difference]: Without dead ends: 2276 [2022-01-28 14:37:39,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:39,022 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 112 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:39,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 154 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:39,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2276 states. [2022-01-28 14:37:39,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2276 to 1274. [2022-01-28 14:37:39,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 1273 states have (on average 3.892380204241948) internal successors, (4955), 1273 states have internal predecessors, (4955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:39,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 4955 transitions. [2022-01-28 14:37:39,042 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 4955 transitions. Word has length 25 [2022-01-28 14:37:39,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:39,042 INFO L470 AbstractCegarLoop]: Abstraction has 1274 states and 4955 transitions. [2022-01-28 14:37:39,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:39,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 4955 transitions. [2022-01-28 14:37:39,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:39,044 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:39,044 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:39,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable517 [2022-01-28 14:37:39,044 INFO L402 AbstractCegarLoop]: === Iteration 519 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:39,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:39,045 INFO L85 PathProgramCache]: Analyzing trace with hash -2135236911, now seen corresponding path program 514 times [2022-01-28 14:37:39,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:39,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011712428] [2022-01-28 14:37:39,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:39,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:39,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:39,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:39,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:39,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011712428] [2022-01-28 14:37:39,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011712428] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:39,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:39,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:39,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023903024] [2022-01-28 14:37:39,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:39,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:39,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:39,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:39,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:39,123 INFO L87 Difference]: Start difference. First operand 1274 states and 4955 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:39,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:39,241 INFO L93 Difference]: Finished difference Result 2323 states and 8511 transitions. [2022-01-28 14:37:39,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:39,241 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:39,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:39,245 INFO L225 Difference]: With dead ends: 2323 [2022-01-28 14:37:39,245 INFO L226 Difference]: Without dead ends: 2132 [2022-01-28 14:37:39,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:39,245 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 104 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:39,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 150 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:39,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2132 states. [2022-01-28 14:37:39,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2132 to 1258. [2022-01-28 14:37:39,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 1257 states have (on average 3.8973747016706444) internal successors, (4899), 1257 states have internal predecessors, (4899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:39,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 4899 transitions. [2022-01-28 14:37:39,266 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 4899 transitions. Word has length 25 [2022-01-28 14:37:39,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:39,266 INFO L470 AbstractCegarLoop]: Abstraction has 1258 states and 4899 transitions. [2022-01-28 14:37:39,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:39,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 4899 transitions. [2022-01-28 14:37:39,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:39,268 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:39,268 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:39,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable518 [2022-01-28 14:37:39,268 INFO L402 AbstractCegarLoop]: === Iteration 520 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:39,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:39,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1224197043, now seen corresponding path program 515 times [2022-01-28 14:37:39,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:39,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665086617] [2022-01-28 14:37:39,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:39,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:39,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:39,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:39,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:39,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665086617] [2022-01-28 14:37:39,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665086617] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:39,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:39,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:39,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770212824] [2022-01-28 14:37:39,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:39,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:39,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:39,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:39,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:39,391 INFO L87 Difference]: Start difference. First operand 1258 states and 4899 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:39,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:39,504 INFO L93 Difference]: Finished difference Result 2473 states and 8985 transitions. [2022-01-28 14:37:39,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:39,504 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:39,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:39,509 INFO L225 Difference]: With dead ends: 2473 [2022-01-28 14:37:39,509 INFO L226 Difference]: Without dead ends: 2284 [2022-01-28 14:37:39,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:39,510 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 99 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:39,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 165 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:39,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2284 states. [2022-01-28 14:37:39,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2284 to 1282. [2022-01-28 14:37:39,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 1281 states have (on average 3.8836846213895395) internal successors, (4975), 1281 states have internal predecessors, (4975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:39,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 4975 transitions. [2022-01-28 14:37:39,532 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 4975 transitions. Word has length 25 [2022-01-28 14:37:39,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:39,532 INFO L470 AbstractCegarLoop]: Abstraction has 1282 states and 4975 transitions. [2022-01-28 14:37:39,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:39,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 4975 transitions. [2022-01-28 14:37:39,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:39,534 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:39,534 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:39,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable519 [2022-01-28 14:37:39,534 INFO L402 AbstractCegarLoop]: === Iteration 521 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:39,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:39,535 INFO L85 PathProgramCache]: Analyzing trace with hash 483244945, now seen corresponding path program 516 times [2022-01-28 14:37:39,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:39,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123628943] [2022-01-28 14:37:39,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:39,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:39,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:39,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:39,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:39,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123628943] [2022-01-28 14:37:39,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123628943] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:39,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:39,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:39,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128459233] [2022-01-28 14:37:39,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:39,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:39,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:39,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:39,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:39,656 INFO L87 Difference]: Start difference. First operand 1282 states and 4975 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:39,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:39,752 INFO L93 Difference]: Finished difference Result 2331 states and 8531 transitions. [2022-01-28 14:37:39,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:39,752 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:39,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:39,756 INFO L225 Difference]: With dead ends: 2331 [2022-01-28 14:37:39,756 INFO L226 Difference]: Without dead ends: 2124 [2022-01-28 14:37:39,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:39,756 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 110 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:39,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 140 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:39,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2124 states. [2022-01-28 14:37:39,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2124 to 1250. [2022-01-28 14:37:39,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1249 states have (on average 3.9031224979983987) internal successors, (4875), 1249 states have internal predecessors, (4875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:39,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 4875 transitions. [2022-01-28 14:37:39,777 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 4875 transitions. Word has length 25 [2022-01-28 14:37:39,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:39,777 INFO L470 AbstractCegarLoop]: Abstraction has 1250 states and 4875 transitions. [2022-01-28 14:37:39,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:39,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 4875 transitions. [2022-01-28 14:37:39,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:39,778 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:39,778 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:39,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable520 [2022-01-28 14:37:39,779 INFO L402 AbstractCegarLoop]: === Iteration 522 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:39,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:39,779 INFO L85 PathProgramCache]: Analyzing trace with hash 145472307, now seen corresponding path program 517 times [2022-01-28 14:37:39,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:39,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452503872] [2022-01-28 14:37:39,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:39,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:39,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:39,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:39,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:39,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452503872] [2022-01-28 14:37:39,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452503872] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:39,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:39,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:39,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783468936] [2022-01-28 14:37:39,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:39,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:39,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:39,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:39,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:39,859 INFO L87 Difference]: Start difference. First operand 1250 states and 4875 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:39,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:39,953 INFO L93 Difference]: Finished difference Result 2477 states and 8999 transitions. [2022-01-28 14:37:39,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:39,954 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:39,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:39,959 INFO L225 Difference]: With dead ends: 2477 [2022-01-28 14:37:39,959 INFO L226 Difference]: Without dead ends: 2318 [2022-01-28 14:37:39,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:39,960 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 112 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:39,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 153 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:39,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318 states. [2022-01-28 14:37:39,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318 to 1274. [2022-01-28 14:37:39,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 1273 states have (on average 3.8955223880597014) internal successors, (4959), 1273 states have internal predecessors, (4959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:39,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 4959 transitions. [2022-01-28 14:37:39,984 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 4959 transitions. Word has length 25 [2022-01-28 14:37:39,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:39,985 INFO L470 AbstractCegarLoop]: Abstraction has 1274 states and 4959 transitions. [2022-01-28 14:37:39,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:39,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 4959 transitions. [2022-01-28 14:37:39,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:39,987 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:39,987 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:39,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable521 [2022-01-28 14:37:39,987 INFO L402 AbstractCegarLoop]: === Iteration 523 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:39,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:39,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1153770291, now seen corresponding path program 518 times [2022-01-28 14:37:39,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:39,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753334587] [2022-01-28 14:37:39,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:39,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:40,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:40,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:40,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753334587] [2022-01-28 14:37:40,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753334587] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:40,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:40,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:40,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702274418] [2022-01-28 14:37:40,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:40,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:40,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:40,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:40,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:40,108 INFO L87 Difference]: Start difference. First operand 1274 states and 4959 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:40,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:40,211 INFO L93 Difference]: Finished difference Result 2505 states and 9087 transitions. [2022-01-28 14:37:40,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:40,211 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:40,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:40,216 INFO L225 Difference]: With dead ends: 2505 [2022-01-28 14:37:40,216 INFO L226 Difference]: Without dead ends: 2302 [2022-01-28 14:37:40,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:40,216 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 121 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:40,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 140 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:40,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2302 states. [2022-01-28 14:37:40,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2302 to 1258. [2022-01-28 14:37:40,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 1257 states have (on average 3.9005568814638027) internal successors, (4903), 1257 states have internal predecessors, (4903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:40,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 4903 transitions. [2022-01-28 14:37:40,240 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 4903 transitions. Word has length 25 [2022-01-28 14:37:40,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:40,240 INFO L470 AbstractCegarLoop]: Abstraction has 1258 states and 4903 transitions. [2022-01-28 14:37:40,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:40,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 4903 transitions. [2022-01-28 14:37:40,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:40,242 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:40,242 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:40,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable522 [2022-01-28 14:37:40,242 INFO L402 AbstractCegarLoop]: === Iteration 524 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:40,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:40,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1970607343, now seen corresponding path program 519 times [2022-01-28 14:37:40,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:40,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522850724] [2022-01-28 14:37:40,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:40,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:40,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:40,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:40,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522850724] [2022-01-28 14:37:40,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522850724] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:40,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:40,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:40,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446699156] [2022-01-28 14:37:40,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:40,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:40,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:40,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:40,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:40,362 INFO L87 Difference]: Start difference. First operand 1258 states and 4903 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:40,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:40,463 INFO L93 Difference]: Finished difference Result 2433 states and 8839 transitions. [2022-01-28 14:37:40,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:40,463 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:40,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:40,468 INFO L225 Difference]: With dead ends: 2433 [2022-01-28 14:37:40,468 INFO L226 Difference]: Without dead ends: 2274 [2022-01-28 14:37:40,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:40,468 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 105 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:40,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 158 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:40,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2274 states. [2022-01-28 14:37:40,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2274 to 1274. [2022-01-28 14:37:40,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 1273 states have (on average 3.889238020424195) internal successors, (4951), 1273 states have internal predecessors, (4951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:40,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 4951 transitions. [2022-01-28 14:37:40,490 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 4951 transitions. Word has length 25 [2022-01-28 14:37:40,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:40,490 INFO L470 AbstractCegarLoop]: Abstraction has 1274 states and 4951 transitions. [2022-01-28 14:37:40,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:40,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 4951 transitions. [2022-01-28 14:37:40,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:40,492 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:40,492 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:40,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable523 [2022-01-28 14:37:40,492 INFO L402 AbstractCegarLoop]: === Iteration 525 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:40,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:40,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1678828339, now seen corresponding path program 520 times [2022-01-28 14:37:40,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:40,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24885564] [2022-01-28 14:37:40,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:40,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:40,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:40,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:40,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:40,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24885564] [2022-01-28 14:37:40,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24885564] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:40,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:40,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:40,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774404544] [2022-01-28 14:37:40,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:40,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:40,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:40,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:40,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:40,613 INFO L87 Difference]: Start difference. First operand 1274 states and 4951 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:40,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:40,718 INFO L93 Difference]: Finished difference Result 2321 states and 8502 transitions. [2022-01-28 14:37:40,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:40,718 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:40,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:40,723 INFO L225 Difference]: With dead ends: 2321 [2022-01-28 14:37:40,723 INFO L226 Difference]: Without dead ends: 2130 [2022-01-28 14:37:40,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:40,724 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 93 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:40,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 150 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:40,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2130 states. [2022-01-28 14:37:40,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2130 to 1258. [2022-01-28 14:37:40,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 1257 states have (on average 3.894192521877486) internal successors, (4895), 1257 states have internal predecessors, (4895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:40,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 4895 transitions. [2022-01-28 14:37:40,749 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 4895 transitions. Word has length 25 [2022-01-28 14:37:40,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:40,749 INFO L470 AbstractCegarLoop]: Abstraction has 1258 states and 4895 transitions. [2022-01-28 14:37:40,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:40,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 4895 transitions. [2022-01-28 14:37:40,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:40,752 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:40,752 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:40,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable524 [2022-01-28 14:37:40,752 INFO L402 AbstractCegarLoop]: === Iteration 526 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:40,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:40,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1353815245, now seen corresponding path program 521 times [2022-01-28 14:37:40,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:40,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490060166] [2022-01-28 14:37:40,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:40,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:40,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:40,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:40,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:40,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490060166] [2022-01-28 14:37:40,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490060166] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:40,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:40,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:40,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99018589] [2022-01-28 14:37:40,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:40,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:40,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:40,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:40,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:40,896 INFO L87 Difference]: Start difference. First operand 1258 states and 4895 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:41,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:41,008 INFO L93 Difference]: Finished difference Result 2469 states and 8971 transitions. [2022-01-28 14:37:41,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:41,008 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:41,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:41,013 INFO L225 Difference]: With dead ends: 2469 [2022-01-28 14:37:41,014 INFO L226 Difference]: Without dead ends: 2282 [2022-01-28 14:37:41,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:41,014 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 99 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:41,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 158 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:41,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2022-01-28 14:37:41,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 1282. [2022-01-28 14:37:41,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 1281 states have (on average 3.88056206088993) internal successors, (4971), 1281 states have internal predecessors, (4971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:41,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 4971 transitions. [2022-01-28 14:37:41,037 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 4971 transitions. Word has length 25 [2022-01-28 14:37:41,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:41,037 INFO L470 AbstractCegarLoop]: Abstraction has 1282 states and 4971 transitions. [2022-01-28 14:37:41,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:41,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 4971 transitions. [2022-01-28 14:37:41,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:41,039 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:41,039 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:41,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable525 [2022-01-28 14:37:41,040 INFO L402 AbstractCegarLoop]: === Iteration 527 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:41,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:41,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1549007505, now seen corresponding path program 522 times [2022-01-28 14:37:41,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:41,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537798673] [2022-01-28 14:37:41,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:41,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:41,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:41,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:41,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:41,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537798673] [2022-01-28 14:37:41,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537798673] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:41,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:41,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:41,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46392209] [2022-01-28 14:37:41,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:41,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:41,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:41,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:41,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:41,161 INFO L87 Difference]: Start difference. First operand 1282 states and 4971 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:41,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:41,273 INFO L93 Difference]: Finished difference Result 2329 states and 8522 transitions. [2022-01-28 14:37:41,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:41,273 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:41,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:41,278 INFO L225 Difference]: With dead ends: 2329 [2022-01-28 14:37:41,278 INFO L226 Difference]: Without dead ends: 2122 [2022-01-28 14:37:41,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:41,278 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 94 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:41,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 165 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:41,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2022-01-28 14:37:41,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 1250. [2022-01-28 14:37:41,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1249 states have (on average 3.899919935948759) internal successors, (4871), 1249 states have internal predecessors, (4871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:41,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 4871 transitions. [2022-01-28 14:37:41,299 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 4871 transitions. Word has length 25 [2022-01-28 14:37:41,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:41,300 INFO L470 AbstractCegarLoop]: Abstraction has 1250 states and 4871 transitions. [2022-01-28 14:37:41,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:41,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 4871 transitions. [2022-01-28 14:37:41,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:41,301 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:41,301 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:41,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable526 [2022-01-28 14:37:41,302 INFO L402 AbstractCegarLoop]: === Iteration 528 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:41,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:41,302 INFO L85 PathProgramCache]: Analyzing trace with hash 869576597, now seen corresponding path program 523 times [2022-01-28 14:37:41,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:41,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867409957] [2022-01-28 14:37:41,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:41,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:41,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:41,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:41,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:41,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867409957] [2022-01-28 14:37:41,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867409957] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:41,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:41,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:41,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857857812] [2022-01-28 14:37:41,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:41,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:41,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:41,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:41,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:41,381 INFO L87 Difference]: Start difference. First operand 1250 states and 4871 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:41,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:41,460 INFO L93 Difference]: Finished difference Result 2593 states and 9437 transitions. [2022-01-28 14:37:41,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:41,460 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:41,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:41,465 INFO L225 Difference]: With dead ends: 2593 [2022-01-28 14:37:41,465 INFO L226 Difference]: Without dead ends: 2404 [2022-01-28 14:37:41,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:41,466 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 114 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:41,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 141 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:41,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2404 states. [2022-01-28 14:37:41,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2404 to 1292. [2022-01-28 14:37:41,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1292 states, 1291 states have (on average 3.8884585592563905) internal successors, (5020), 1291 states have internal predecessors, (5020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:41,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 5020 transitions. [2022-01-28 14:37:41,489 INFO L78 Accepts]: Start accepts. Automaton has 1292 states and 5020 transitions. Word has length 25 [2022-01-28 14:37:41,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:41,489 INFO L470 AbstractCegarLoop]: Abstraction has 1292 states and 5020 transitions. [2022-01-28 14:37:41,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:41,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1292 states and 5020 transitions. [2022-01-28 14:37:41,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:41,491 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:41,491 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:41,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable527 [2022-01-28 14:37:41,491 INFO L402 AbstractCegarLoop]: === Iteration 529 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:41,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:41,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1173760397, now seen corresponding path program 524 times [2022-01-28 14:37:41,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:41,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754095640] [2022-01-28 14:37:41,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:41,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:41,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:41,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:41,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:41,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754095640] [2022-01-28 14:37:41,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754095640] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:41,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:41,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:41,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23256804] [2022-01-28 14:37:41,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:41,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:41,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:41,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:41,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:41,589 INFO L87 Difference]: Start difference. First operand 1292 states and 5020 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:41,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:41,696 INFO L93 Difference]: Finished difference Result 2591 states and 9402 transitions. [2022-01-28 14:37:41,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:41,696 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:41,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:41,702 INFO L225 Difference]: With dead ends: 2591 [2022-01-28 14:37:41,702 INFO L226 Difference]: Without dead ends: 2374 [2022-01-28 14:37:41,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:41,702 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 104 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:41,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 151 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:41,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2374 states. [2022-01-28 14:37:41,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2374 to 1262. [2022-01-28 14:37:41,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1262 states, 1261 states have (on average 3.8977002379064234) internal successors, (4915), 1261 states have internal predecessors, (4915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:41,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 4915 transitions. [2022-01-28 14:37:41,725 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 4915 transitions. Word has length 25 [2022-01-28 14:37:41,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:41,725 INFO L470 AbstractCegarLoop]: Abstraction has 1262 states and 4915 transitions. [2022-01-28 14:37:41,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:41,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 4915 transitions. [2022-01-28 14:37:41,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:41,727 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:41,727 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:41,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable528 [2022-01-28 14:37:41,727 INFO L402 AbstractCegarLoop]: === Iteration 530 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:41,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:41,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1246503053, now seen corresponding path program 525 times [2022-01-28 14:37:41,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:41,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599456607] [2022-01-28 14:37:41,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:41,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:41,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:41,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:41,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:41,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599456607] [2022-01-28 14:37:41,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599456607] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:41,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:41,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:41,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311861821] [2022-01-28 14:37:41,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:41,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:41,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:41,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:41,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:41,824 INFO L87 Difference]: Start difference. First operand 1262 states and 4915 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:41,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:41,913 INFO L93 Difference]: Finished difference Result 2513 states and 9141 transitions. [2022-01-28 14:37:41,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:41,913 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:41,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:41,917 INFO L225 Difference]: With dead ends: 2513 [2022-01-28 14:37:41,917 INFO L226 Difference]: Without dead ends: 2324 [2022-01-28 14:37:41,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:41,917 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 111 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:41,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 148 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:41,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2324 states. [2022-01-28 14:37:41,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2324 to 1286. [2022-01-28 14:37:41,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1285 states have (on average 3.884046692607004) internal successors, (4991), 1285 states have internal predecessors, (4991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:41,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 4991 transitions. [2022-01-28 14:37:41,938 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 4991 transitions. Word has length 25 [2022-01-28 14:37:41,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:41,938 INFO L470 AbstractCegarLoop]: Abstraction has 1286 states and 4991 transitions. [2022-01-28 14:37:41,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:41,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 4991 transitions. [2022-01-28 14:37:41,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:41,940 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:41,940 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:41,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable529 [2022-01-28 14:37:41,940 INFO L402 AbstractCegarLoop]: === Iteration 531 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:41,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:41,940 INFO L85 PathProgramCache]: Analyzing trace with hash -690714765, now seen corresponding path program 526 times [2022-01-28 14:37:41,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:41,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009059487] [2022-01-28 14:37:41,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:41,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:42,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:42,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:42,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009059487] [2022-01-28 14:37:42,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009059487] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:42,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:42,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:42,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950712572] [2022-01-28 14:37:42,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:42,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:42,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:42,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:42,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:42,042 INFO L87 Difference]: Start difference. First operand 1286 states and 4991 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:42,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:42,141 INFO L93 Difference]: Finished difference Result 2371 states and 8687 transitions. [2022-01-28 14:37:42,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:42,142 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:42,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:42,147 INFO L225 Difference]: With dead ends: 2371 [2022-01-28 14:37:42,147 INFO L226 Difference]: Without dead ends: 2172 [2022-01-28 14:37:42,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:42,148 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 107 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:42,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 136 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:42,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2022-01-28 14:37:42,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 1262. [2022-01-28 14:37:42,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1262 states, 1261 states have (on average 3.888183980967486) internal successors, (4903), 1261 states have internal predecessors, (4903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:42,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 4903 transitions. [2022-01-28 14:37:42,178 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 4903 transitions. Word has length 25 [2022-01-28 14:37:42,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:42,178 INFO L470 AbstractCegarLoop]: Abstraction has 1262 states and 4903 transitions. [2022-01-28 14:37:42,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:42,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 4903 transitions. [2022-01-28 14:37:42,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:42,180 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:42,180 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:42,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable530 [2022-01-28 14:37:42,180 INFO L402 AbstractCegarLoop]: === Iteration 532 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:42,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:42,181 INFO L85 PathProgramCache]: Analyzing trace with hash -264155439, now seen corresponding path program 527 times [2022-01-28 14:37:42,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:42,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464868313] [2022-01-28 14:37:42,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:42,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:42,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:42,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:42,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:42,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464868313] [2022-01-28 14:37:42,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464868313] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:42,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:42,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:42,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398651852] [2022-01-28 14:37:42,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:42,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:42,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:42,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:42,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:42,319 INFO L87 Difference]: Start difference. First operand 1262 states and 4903 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:42,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:42,435 INFO L93 Difference]: Finished difference Result 2511 states and 9124 transitions. [2022-01-28 14:37:42,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:42,436 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:42,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:42,442 INFO L225 Difference]: With dead ends: 2511 [2022-01-28 14:37:42,443 INFO L226 Difference]: Without dead ends: 2324 [2022-01-28 14:37:42,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:42,443 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 102 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:42,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 157 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:42,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2324 states. [2022-01-28 14:37:42,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2324 to 1286. [2022-01-28 14:37:42,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1285 states have (on average 3.8747081712062257) internal successors, (4979), 1285 states have internal predecessors, (4979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:42,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 4979 transitions. [2022-01-28 14:37:42,474 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 4979 transitions. Word has length 25 [2022-01-28 14:37:42,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:42,474 INFO L470 AbstractCegarLoop]: Abstraction has 1286 states and 4979 transitions. [2022-01-28 14:37:42,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:42,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 4979 transitions. [2022-01-28 14:37:42,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:42,476 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:42,476 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:42,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable531 [2022-01-28 14:37:42,477 INFO L402 AbstractCegarLoop]: === Iteration 533 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:42,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:42,477 INFO L85 PathProgramCache]: Analyzing trace with hash -470963405, now seen corresponding path program 528 times [2022-01-28 14:37:42,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:42,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110243351] [2022-01-28 14:37:42,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:42,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:42,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:42,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:42,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:42,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110243351] [2022-01-28 14:37:42,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110243351] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:42,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:42,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:42,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19733787] [2022-01-28 14:37:42,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:42,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:42,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:42,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:42,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:42,591 INFO L87 Difference]: Start difference. First operand 1286 states and 4979 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:42,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:42,702 INFO L93 Difference]: Finished difference Result 2371 states and 8675 transitions. [2022-01-28 14:37:42,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:42,702 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:42,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:42,707 INFO L225 Difference]: With dead ends: 2371 [2022-01-28 14:37:42,707 INFO L226 Difference]: Without dead ends: 2156 [2022-01-28 14:37:42,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:42,707 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 96 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:42,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 158 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:42,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2156 states. [2022-01-28 14:37:42,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2156 to 1246. [2022-01-28 14:37:42,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1246 states, 1245 states have (on average 3.9044176706827307) internal successors, (4861), 1245 states have internal predecessors, (4861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:42,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 4861 transitions. [2022-01-28 14:37:42,728 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 4861 transitions. Word has length 25 [2022-01-28 14:37:42,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:42,728 INFO L470 AbstractCegarLoop]: Abstraction has 1246 states and 4861 transitions. [2022-01-28 14:37:42,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:42,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 4861 transitions. [2022-01-28 14:37:42,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:42,730 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:42,730 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:42,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable532 [2022-01-28 14:37:42,730 INFO L402 AbstractCegarLoop]: === Iteration 534 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:42,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:42,731 INFO L85 PathProgramCache]: Analyzing trace with hash -2124889421, now seen corresponding path program 529 times [2022-01-28 14:37:42,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:42,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286187694] [2022-01-28 14:37:42,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:42,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:42,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:42,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:42,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:42,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286187694] [2022-01-28 14:37:42,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286187694] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:42,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:42,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:42,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736620012] [2022-01-28 14:37:42,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:42,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:42,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:42,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:42,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:42,844 INFO L87 Difference]: Start difference. First operand 1246 states and 4861 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:42,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:42,936 INFO L93 Difference]: Finished difference Result 2475 states and 8984 transitions. [2022-01-28 14:37:42,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:42,936 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:42,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:42,941 INFO L225 Difference]: With dead ends: 2475 [2022-01-28 14:37:42,941 INFO L226 Difference]: Without dead ends: 2316 [2022-01-28 14:37:42,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:42,941 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 128 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:42,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 142 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:42,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2316 states. [2022-01-28 14:37:42,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2316 to 1262. [2022-01-28 14:37:42,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1262 states, 1261 states have (on average 3.8929421094369547) internal successors, (4909), 1261 states have internal predecessors, (4909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:42,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 4909 transitions. [2022-01-28 14:37:42,964 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 4909 transitions. Word has length 25 [2022-01-28 14:37:42,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:42,964 INFO L470 AbstractCegarLoop]: Abstraction has 1262 states and 4909 transitions. [2022-01-28 14:37:42,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:42,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 4909 transitions. [2022-01-28 14:37:42,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:42,966 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:42,966 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:42,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable533 [2022-01-28 14:37:42,966 INFO L402 AbstractCegarLoop]: === Iteration 535 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:42,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:42,966 INFO L85 PathProgramCache]: Analyzing trace with hash 580143125, now seen corresponding path program 530 times [2022-01-28 14:37:42,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:42,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072585475] [2022-01-28 14:37:42,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:42,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:43,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:43,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:43,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072585475] [2022-01-28 14:37:43,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072585475] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:43,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:43,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:43,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479222439] [2022-01-28 14:37:43,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:43,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:43,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:43,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:43,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:43,046 INFO L87 Difference]: Start difference. First operand 1262 states and 4909 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:43,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:43,131 INFO L93 Difference]: Finished difference Result 2505 states and 9077 transitions. [2022-01-28 14:37:43,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:43,132 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:43,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:43,137 INFO L225 Difference]: With dead ends: 2505 [2022-01-28 14:37:43,137 INFO L226 Difference]: Without dead ends: 2300 [2022-01-28 14:37:43,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:43,137 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 125 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:43,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 137 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:43,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2300 states. [2022-01-28 14:37:43,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2300 to 1246. [2022-01-28 14:37:43,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1246 states, 1245 states have (on average 3.897991967871486) internal successors, (4853), 1245 states have internal predecessors, (4853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:43,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 4853 transitions. [2022-01-28 14:37:43,158 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 4853 transitions. Word has length 25 [2022-01-28 14:37:43,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:43,158 INFO L470 AbstractCegarLoop]: Abstraction has 1246 states and 4853 transitions. [2022-01-28 14:37:43,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:43,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 4853 transitions. [2022-01-28 14:37:43,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:43,160 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:43,160 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:43,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable534 [2022-01-28 14:37:43,160 INFO L402 AbstractCegarLoop]: === Iteration 536 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:43,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:43,160 INFO L85 PathProgramCache]: Analyzing trace with hash 481831603, now seen corresponding path program 531 times [2022-01-28 14:37:43,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:43,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703090390] [2022-01-28 14:37:43,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:43,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:43,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:43,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:43,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703090390] [2022-01-28 14:37:43,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703090390] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:43,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:43,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:43,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918506129] [2022-01-28 14:37:43,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:43,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:43,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:43,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:43,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:43,243 INFO L87 Difference]: Start difference. First operand 1246 states and 4853 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:43,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:43,344 INFO L93 Difference]: Finished difference Result 2469 states and 8959 transitions. [2022-01-28 14:37:43,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:43,344 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:43,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:43,349 INFO L225 Difference]: With dead ends: 2469 [2022-01-28 14:37:43,349 INFO L226 Difference]: Without dead ends: 2310 [2022-01-28 14:37:43,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:43,349 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 103 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:43,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 153 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:43,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2310 states. [2022-01-28 14:37:43,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2310 to 1262. [2022-01-28 14:37:43,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1262 states, 1261 states have (on average 3.88659793814433) internal successors, (4901), 1261 states have internal predecessors, (4901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:43,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 4901 transitions. [2022-01-28 14:37:43,369 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 4901 transitions. Word has length 25 [2022-01-28 14:37:43,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:43,369 INFO L470 AbstractCegarLoop]: Abstraction has 1262 states and 4901 transitions. [2022-01-28 14:37:43,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:43,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 4901 transitions. [2022-01-28 14:37:43,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:43,371 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:43,371 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:43,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable535 [2022-01-28 14:37:43,371 INFO L402 AbstractCegarLoop]: === Iteration 537 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:43,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:43,371 INFO L85 PathProgramCache]: Analyzing trace with hash -2132639053, now seen corresponding path program 532 times [2022-01-28 14:37:43,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:43,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656040096] [2022-01-28 14:37:43,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:43,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:43,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:43,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:43,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656040096] [2022-01-28 14:37:43,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656040096] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:43,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:43,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:43,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399335447] [2022-01-28 14:37:43,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:43,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:43,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:43,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:43,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:43,476 INFO L87 Difference]: Start difference. First operand 1262 states and 4901 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:43,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:43,569 INFO L93 Difference]: Finished difference Result 2493 states and 9035 transitions. [2022-01-28 14:37:43,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:43,569 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:43,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:43,574 INFO L225 Difference]: With dead ends: 2493 [2022-01-28 14:37:43,574 INFO L226 Difference]: Without dead ends: 2294 [2022-01-28 14:37:43,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:43,574 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 110 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:43,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 137 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:43,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2294 states. [2022-01-28 14:37:43,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2294 to 1246. [2022-01-28 14:37:43,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1246 states, 1245 states have (on average 3.891566265060241) internal successors, (4845), 1245 states have internal predecessors, (4845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:43,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 4845 transitions. [2022-01-28 14:37:43,595 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 4845 transitions. Word has length 25 [2022-01-28 14:37:43,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:43,595 INFO L470 AbstractCegarLoop]: Abstraction has 1246 states and 4845 transitions. [2022-01-28 14:37:43,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:43,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 4845 transitions. [2022-01-28 14:37:43,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:43,597 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:43,597 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:43,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable536 [2022-01-28 14:37:43,597 INFO L402 AbstractCegarLoop]: === Iteration 538 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:43,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:43,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1898993557, now seen corresponding path program 533 times [2022-01-28 14:37:43,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:43,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131700880] [2022-01-28 14:37:43,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:43,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:43,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:43,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:43,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:43,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131700880] [2022-01-28 14:37:43,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131700880] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:43,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:43,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:43,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448744960] [2022-01-28 14:37:43,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:43,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:43,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:43,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:43,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:43,724 INFO L87 Difference]: Start difference. First operand 1246 states and 4845 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:43,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:43,827 INFO L93 Difference]: Finished difference Result 2541 states and 9221 transitions. [2022-01-28 14:37:43,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:43,827 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:43,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:43,832 INFO L225 Difference]: With dead ends: 2541 [2022-01-28 14:37:43,832 INFO L226 Difference]: Without dead ends: 2352 [2022-01-28 14:37:43,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:43,833 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 114 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:43,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 144 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:43,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2022-01-28 14:37:43,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 1274. [2022-01-28 14:37:43,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 1273 states have (on average 3.875098193244305) internal successors, (4933), 1273 states have internal predecessors, (4933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:43,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 4933 transitions. [2022-01-28 14:37:43,857 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 4933 transitions. Word has length 25 [2022-01-28 14:37:43,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:43,857 INFO L470 AbstractCegarLoop]: Abstraction has 1274 states and 4933 transitions. [2022-01-28 14:37:43,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:43,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 4933 transitions. [2022-01-28 14:37:43,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:43,859 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:43,859 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:43,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable537 [2022-01-28 14:37:43,860 INFO L402 AbstractCegarLoop]: === Iteration 539 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:43,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:43,860 INFO L85 PathProgramCache]: Analyzing trace with hash 506849011, now seen corresponding path program 534 times [2022-01-28 14:37:43,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:43,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700550549] [2022-01-28 14:37:43,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:43,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:43,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:43,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:43,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:43,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700550549] [2022-01-28 14:37:43,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700550549] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:43,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:43,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:43,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148569808] [2022-01-28 14:37:43,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:43,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:43,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:43,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:43,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:43,942 INFO L87 Difference]: Start difference. First operand 1274 states and 4933 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:44,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:44,020 INFO L93 Difference]: Finished difference Result 2535 states and 9176 transitions. [2022-01-28 14:37:44,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:44,021 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:44,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:44,025 INFO L225 Difference]: With dead ends: 2535 [2022-01-28 14:37:44,025 INFO L226 Difference]: Without dead ends: 2316 [2022-01-28 14:37:44,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:44,026 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 101 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:44,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 147 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:44,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2316 states. [2022-01-28 14:37:44,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2316 to 1238. [2022-01-28 14:37:44,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 1237 states have (on average 3.89733225545675) internal successors, (4821), 1237 states have internal predecessors, (4821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:44,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 4821 transitions. [2022-01-28 14:37:44,047 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 4821 transitions. Word has length 25 [2022-01-28 14:37:44,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:44,047 INFO L470 AbstractCegarLoop]: Abstraction has 1238 states and 4821 transitions. [2022-01-28 14:37:44,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:44,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 4821 transitions. [2022-01-28 14:37:44,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:44,049 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:44,049 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:44,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable538 [2022-01-28 14:37:44,049 INFO L402 AbstractCegarLoop]: === Iteration 540 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:44,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:44,049 INFO L85 PathProgramCache]: Analyzing trace with hash 147016337, now seen corresponding path program 535 times [2022-01-28 14:37:44,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:44,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842905766] [2022-01-28 14:37:44,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:44,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:44,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:44,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:44,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:44,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842905766] [2022-01-28 14:37:44,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842905766] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:44,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:44,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:44,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998889867] [2022-01-28 14:37:44,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:44,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:44,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:44,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:44,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:44,128 INFO L87 Difference]: Start difference. First operand 1238 states and 4821 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:44,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:44,204 INFO L93 Difference]: Finished difference Result 2439 states and 8836 transitions. [2022-01-28 14:37:44,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:44,204 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:44,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:44,209 INFO L225 Difference]: With dead ends: 2439 [2022-01-28 14:37:44,209 INFO L226 Difference]: Without dead ends: 2280 [2022-01-28 14:37:44,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:44,209 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 105 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:44,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 154 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:44,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2280 states. [2022-01-28 14:37:44,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2280 to 1238. [2022-01-28 14:37:44,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 1237 states have (on average 3.8843977364591753) internal successors, (4805), 1237 states have internal predecessors, (4805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:44,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 4805 transitions. [2022-01-28 14:37:44,234 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 4805 transitions. Word has length 25 [2022-01-28 14:37:44,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:44,234 INFO L470 AbstractCegarLoop]: Abstraction has 1238 states and 4805 transitions. [2022-01-28 14:37:44,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:44,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 4805 transitions. [2022-01-28 14:37:44,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:44,236 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:44,236 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:44,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable539 [2022-01-28 14:37:44,236 INFO L402 AbstractCegarLoop]: === Iteration 541 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:44,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:44,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1442918413, now seen corresponding path program 536 times [2022-01-28 14:37:44,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:44,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427635774] [2022-01-28 14:37:44,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:44,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:44,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:44,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:44,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:44,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427635774] [2022-01-28 14:37:44,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427635774] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:44,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:44,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:44,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744819474] [2022-01-28 14:37:44,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:44,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:44,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:44,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:44,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:44,313 INFO L87 Difference]: Start difference. First operand 1238 states and 4805 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:44,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:44,384 INFO L93 Difference]: Finished difference Result 2469 states and 8929 transitions. [2022-01-28 14:37:44,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:44,384 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:44,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:44,389 INFO L225 Difference]: With dead ends: 2469 [2022-01-28 14:37:44,389 INFO L226 Difference]: Without dead ends: 2264 [2022-01-28 14:37:44,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:44,389 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 136 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:44,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 132 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:44,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2264 states. [2022-01-28 14:37:44,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2264 to 1222. [2022-01-28 14:37:44,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 1221 states have (on average 3.8894348894348894) internal successors, (4749), 1221 states have internal predecessors, (4749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:44,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 4749 transitions. [2022-01-28 14:37:44,411 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 4749 transitions. Word has length 25 [2022-01-28 14:37:44,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:44,411 INFO L470 AbstractCegarLoop]: Abstraction has 1222 states and 4749 transitions. [2022-01-28 14:37:44,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:44,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 4749 transitions. [2022-01-28 14:37:44,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:44,413 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:44,413 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:44,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable540 [2022-01-28 14:37:44,413 INFO L402 AbstractCegarLoop]: === Iteration 542 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:44,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:44,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1516636851, now seen corresponding path program 537 times [2022-01-28 14:37:44,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:44,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979842181] [2022-01-28 14:37:44,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:44,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:44,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:44,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:44,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:44,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979842181] [2022-01-28 14:37:44,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979842181] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:44,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:44,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:44,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054006983] [2022-01-28 14:37:44,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:44,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:44,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:44,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:44,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:44,493 INFO L87 Difference]: Start difference. First operand 1222 states and 4749 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:44,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:44,567 INFO L93 Difference]: Finished difference Result 2393 states and 8671 transitions. [2022-01-28 14:37:44,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:44,567 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:44,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:44,573 INFO L225 Difference]: With dead ends: 2393 [2022-01-28 14:37:44,573 INFO L226 Difference]: Without dead ends: 2234 [2022-01-28 14:37:44,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:44,573 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 111 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:44,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 154 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:44,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2234 states. [2022-01-28 14:37:44,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2234 to 1238. [2022-01-28 14:37:44,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 1237 states have (on average 3.877930476960388) internal successors, (4797), 1237 states have internal predecessors, (4797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:44,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 4797 transitions. [2022-01-28 14:37:44,596 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 4797 transitions. Word has length 25 [2022-01-28 14:37:44,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:44,596 INFO L470 AbstractCegarLoop]: Abstraction has 1238 states and 4797 transitions. [2022-01-28 14:37:44,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:44,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 4797 transitions. [2022-01-28 14:37:44,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:44,598 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:44,598 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:44,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable541 [2022-01-28 14:37:44,598 INFO L402 AbstractCegarLoop]: === Iteration 543 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:44,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:44,598 INFO L85 PathProgramCache]: Analyzing trace with hash -425635149, now seen corresponding path program 538 times [2022-01-28 14:37:44,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:44,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875084600] [2022-01-28 14:37:44,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:44,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:44,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:44,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:44,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:44,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875084600] [2022-01-28 14:37:44,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875084600] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:44,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:44,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:44,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447893206] [2022-01-28 14:37:44,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:44,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:44,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:44,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:44,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:44,678 INFO L87 Difference]: Start difference. First operand 1238 states and 4797 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:44,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:44,752 INFO L93 Difference]: Finished difference Result 2281 states and 8334 transitions. [2022-01-28 14:37:44,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:44,752 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:44,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:44,776 INFO L225 Difference]: With dead ends: 2281 [2022-01-28 14:37:44,777 INFO L226 Difference]: Without dead ends: 2090 [2022-01-28 14:37:44,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:44,777 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 93 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:44,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 148 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:44,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2022-01-28 14:37:44,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 1222. [2022-01-28 14:37:44,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 1221 states have (on average 3.8828828828828827) internal successors, (4741), 1221 states have internal predecessors, (4741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:44,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 4741 transitions. [2022-01-28 14:37:44,799 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 4741 transitions. Word has length 25 [2022-01-28 14:37:44,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:44,799 INFO L470 AbstractCegarLoop]: Abstraction has 1222 states and 4741 transitions. [2022-01-28 14:37:44,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:44,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 4741 transitions. [2022-01-28 14:37:44,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:44,801 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:44,801 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:44,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable542 [2022-01-28 14:37:44,801 INFO L402 AbstractCegarLoop]: === Iteration 544 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:44,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:44,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1361168491, now seen corresponding path program 539 times [2022-01-28 14:37:44,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:44,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131848427] [2022-01-28 14:37:44,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:44,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:44,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:44,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:44,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:44,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131848427] [2022-01-28 14:37:44,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131848427] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:44,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:44,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:44,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325126835] [2022-01-28 14:37:44,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:44,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:44,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:44,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:44,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:44,879 INFO L87 Difference]: Start difference. First operand 1222 states and 4741 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:44,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:44,952 INFO L93 Difference]: Finished difference Result 2431 states and 8808 transitions. [2022-01-28 14:37:44,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:44,952 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:44,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:44,957 INFO L225 Difference]: With dead ends: 2431 [2022-01-28 14:37:44,957 INFO L226 Difference]: Without dead ends: 2242 [2022-01-28 14:37:44,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:44,958 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 108 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:44,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 146 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:44,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2242 states. [2022-01-28 14:37:44,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2242 to 1246. [2022-01-28 14:37:44,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1246 states, 1245 states have (on average 3.8690763052208834) internal successors, (4817), 1245 states have internal predecessors, (4817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:44,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 4817 transitions. [2022-01-28 14:37:44,980 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 4817 transitions. Word has length 25 [2022-01-28 14:37:44,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:44,980 INFO L470 AbstractCegarLoop]: Abstraction has 1246 states and 4817 transitions. [2022-01-28 14:37:44,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:44,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 4817 transitions. [2022-01-28 14:37:44,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:44,982 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:44,982 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:44,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable543 [2022-01-28 14:37:44,982 INFO L402 AbstractCegarLoop]: === Iteration 545 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:44,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:44,982 INFO L85 PathProgramCache]: Analyzing trace with hash -2102120589, now seen corresponding path program 540 times [2022-01-28 14:37:44,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:44,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455979244] [2022-01-28 14:37:44,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:44,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:44,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:45,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:45,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:45,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455979244] [2022-01-28 14:37:45,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455979244] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:45,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:45,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:45,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786593557] [2022-01-28 14:37:45,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:45,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:45,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:45,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:45,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:45,066 INFO L87 Difference]: Start difference. First operand 1246 states and 4817 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:45,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:45,138 INFO L93 Difference]: Finished difference Result 2289 states and 8354 transitions. [2022-01-28 14:37:45,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:45,139 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:45,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:45,143 INFO L225 Difference]: With dead ends: 2289 [2022-01-28 14:37:45,143 INFO L226 Difference]: Without dead ends: 2082 [2022-01-28 14:37:45,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:45,143 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 104 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:45,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 149 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:45,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2082 states. [2022-01-28 14:37:45,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2082 to 1214. [2022-01-28 14:37:45,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1214 states, 1213 states have (on average 3.8887056883759277) internal successors, (4717), 1213 states have internal predecessors, (4717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:45,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 4717 transitions. [2022-01-28 14:37:45,166 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 4717 transitions. Word has length 25 [2022-01-28 14:37:45,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:45,166 INFO L470 AbstractCegarLoop]: Abstraction has 1214 states and 4717 transitions. [2022-01-28 14:37:45,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:45,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 4717 transitions. [2022-01-28 14:37:45,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:45,168 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:45,168 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:45,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable544 [2022-01-28 14:37:45,169 INFO L402 AbstractCegarLoop]: === Iteration 546 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:45,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:45,169 INFO L85 PathProgramCache]: Analyzing trace with hash 871793331, now seen corresponding path program 541 times [2022-01-28 14:37:45,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:45,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699055228] [2022-01-28 14:37:45,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:45,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:45,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:45,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:45,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:45,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699055228] [2022-01-28 14:37:45,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699055228] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:45,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:45,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:45,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357623725] [2022-01-28 14:37:45,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:45,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:45,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:45,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:45,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:45,250 INFO L87 Difference]: Start difference. First operand 1214 states and 4717 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:45,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:45,317 INFO L93 Difference]: Finished difference Result 2395 states and 8686 transitions. [2022-01-28 14:37:45,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:45,317 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:45,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:45,322 INFO L225 Difference]: With dead ends: 2395 [2022-01-28 14:37:45,322 INFO L226 Difference]: Without dead ends: 2236 [2022-01-28 14:37:45,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:45,322 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 109 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:45,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 148 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:45,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2236 states. [2022-01-28 14:37:45,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2236 to 1238. [2022-01-28 14:37:45,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 1237 states have (on average 3.8811641067097815) internal successors, (4801), 1237 states have internal predecessors, (4801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:45,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 4801 transitions. [2022-01-28 14:37:45,343 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 4801 transitions. Word has length 25 [2022-01-28 14:37:45,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:45,344 INFO L470 AbstractCegarLoop]: Abstraction has 1238 states and 4801 transitions. [2022-01-28 14:37:45,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:45,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 4801 transitions. [2022-01-28 14:37:45,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:45,345 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:45,346 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:45,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable545 [2022-01-28 14:37:45,346 INFO L402 AbstractCegarLoop]: === Iteration 547 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:45,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:45,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1742677325, now seen corresponding path program 542 times [2022-01-28 14:37:45,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:45,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057561342] [2022-01-28 14:37:45,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:45,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:45,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:45,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:45,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:45,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057561342] [2022-01-28 14:37:45,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057561342] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:45,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:45,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:45,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226952425] [2022-01-28 14:37:45,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:45,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:45,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:45,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:45,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:45,422 INFO L87 Difference]: Start difference. First operand 1238 states and 4801 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:45,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:45,503 INFO L93 Difference]: Finished difference Result 2419 states and 8762 transitions. [2022-01-28 14:37:45,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:45,503 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:45,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:45,507 INFO L225 Difference]: With dead ends: 2419 [2022-01-28 14:37:45,507 INFO L226 Difference]: Without dead ends: 2220 [2022-01-28 14:37:45,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:45,507 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 104 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:45,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 155 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:45,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2220 states. [2022-01-28 14:37:45,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2220 to 1222. [2022-01-28 14:37:45,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 1221 states have (on average 3.8861588861588863) internal successors, (4745), 1221 states have internal predecessors, (4745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:45,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 4745 transitions. [2022-01-28 14:37:45,528 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 4745 transitions. Word has length 25 [2022-01-28 14:37:45,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:45,528 INFO L470 AbstractCegarLoop]: Abstraction has 1222 states and 4745 transitions. [2022-01-28 14:37:45,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:45,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 4745 transitions. [2022-01-28 14:37:45,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:45,529 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:45,530 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:45,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable546 [2022-01-28 14:37:45,530 INFO L402 AbstractCegarLoop]: === Iteration 548 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:45,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:45,530 INFO L85 PathProgramCache]: Analyzing trace with hash 24996369, now seen corresponding path program 543 times [2022-01-28 14:37:45,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:45,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355903075] [2022-01-28 14:37:45,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:45,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:45,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:45,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:45,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:45,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355903075] [2022-01-28 14:37:45,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355903075] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:45,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:45,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:45,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847038630] [2022-01-28 14:37:45,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:45,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:45,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:45,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:45,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:45,608 INFO L87 Difference]: Start difference. First operand 1222 states and 4745 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:45,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:45,672 INFO L93 Difference]: Finished difference Result 2339 states and 8474 transitions. [2022-01-28 14:37:45,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:45,672 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:45,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:45,676 INFO L225 Difference]: With dead ends: 2339 [2022-01-28 14:37:45,677 INFO L226 Difference]: Without dead ends: 2180 [2022-01-28 14:37:45,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:45,677 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 115 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:45,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 148 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:45,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2180 states. [2022-01-28 14:37:45,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2180 to 1238. [2022-01-28 14:37:45,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 1237 states have (on average 3.8746968472109944) internal successors, (4793), 1237 states have internal predecessors, (4793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:45,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 4793 transitions. [2022-01-28 14:37:45,699 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 4793 transitions. Word has length 25 [2022-01-28 14:37:45,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:45,699 INFO L470 AbstractCegarLoop]: Abstraction has 1238 states and 4793 transitions. [2022-01-28 14:37:45,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:45,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 4793 transitions. [2022-01-28 14:37:45,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:45,701 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:45,701 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:45,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable547 [2022-01-28 14:37:45,701 INFO L402 AbstractCegarLoop]: === Iteration 549 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:45,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:45,701 INFO L85 PathProgramCache]: Analyzing trace with hash 667335347, now seen corresponding path program 544 times [2022-01-28 14:37:45,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:45,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441798065] [2022-01-28 14:37:45,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:45,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:45,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:45,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:45,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441798065] [2022-01-28 14:37:45,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441798065] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:45,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:45,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:45,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692188895] [2022-01-28 14:37:45,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:45,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:45,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:45,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:45,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:45,784 INFO L87 Difference]: Start difference. First operand 1238 states and 4793 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:45,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:45,863 INFO L93 Difference]: Finished difference Result 2227 states and 8137 transitions. [2022-01-28 14:37:45,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:45,863 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:45,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:45,867 INFO L225 Difference]: With dead ends: 2227 [2022-01-28 14:37:45,868 INFO L226 Difference]: Without dead ends: 2036 [2022-01-28 14:37:45,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:45,868 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 103 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:45,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 142 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:45,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2036 states. [2022-01-28 14:37:45,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2036 to 1222. [2022-01-28 14:37:45,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 1221 states have (on average 3.8796068796068797) internal successors, (4737), 1221 states have internal predecessors, (4737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:45,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 4737 transitions. [2022-01-28 14:37:45,889 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 4737 transitions. Word has length 25 [2022-01-28 14:37:45,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:45,889 INFO L470 AbstractCegarLoop]: Abstraction has 1222 states and 4737 transitions. [2022-01-28 14:37:45,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:45,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 4737 transitions. [2022-01-28 14:37:45,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:45,891 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:45,891 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:45,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable548 [2022-01-28 14:37:45,891 INFO L402 AbstractCegarLoop]: === Iteration 550 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:45,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:45,891 INFO L85 PathProgramCache]: Analyzing trace with hash 44704435, now seen corresponding path program 545 times [2022-01-28 14:37:45,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:45,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557777641] [2022-01-28 14:37:45,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:45,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:45,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:45,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:45,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:45,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557777641] [2022-01-28 14:37:45,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557777641] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:45,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:45,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:45,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798454572] [2022-01-28 14:37:45,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:45,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:45,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:45,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:45,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:45,989 INFO L87 Difference]: Start difference. First operand 1222 states and 4737 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:46,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:46,076 INFO L93 Difference]: Finished difference Result 2243 states and 8209 transitions. [2022-01-28 14:37:46,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:46,076 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:46,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:46,081 INFO L225 Difference]: With dead ends: 2243 [2022-01-28 14:37:46,081 INFO L226 Difference]: Without dead ends: 2060 [2022-01-28 14:37:46,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:46,081 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 111 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:46,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 141 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:46,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2060 states. [2022-01-28 14:37:46,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2060 to 1246. [2022-01-28 14:37:46,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1246 states, 1245 states have (on average 3.865863453815261) internal successors, (4813), 1245 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:46,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 4813 transitions. [2022-01-28 14:37:46,121 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 4813 transitions. Word has length 25 [2022-01-28 14:37:46,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:46,121 INFO L470 AbstractCegarLoop]: Abstraction has 1246 states and 4813 transitions. [2022-01-28 14:37:46,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:46,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 4813 transitions. [2022-01-28 14:37:46,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:46,123 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:46,123 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:46,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable549 [2022-01-28 14:37:46,124 INFO L402 AbstractCegarLoop]: === Iteration 551 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:46,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:46,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1998632559, now seen corresponding path program 546 times [2022-01-28 14:37:46,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:46,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177873154] [2022-01-28 14:37:46,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:46,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:46,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:46,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:46,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177873154] [2022-01-28 14:37:46,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177873154] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:46,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:46,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:46,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673582562] [2022-01-28 14:37:46,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:46,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:46,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:46,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:46,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:46,202 INFO L87 Difference]: Start difference. First operand 1246 states and 4813 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:46,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:46,291 INFO L93 Difference]: Finished difference Result 2059 states and 7596 transitions. [2022-01-28 14:37:46,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:46,292 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:46,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:46,296 INFO L225 Difference]: With dead ends: 2059 [2022-01-28 14:37:46,296 INFO L226 Difference]: Without dead ends: 1852 [2022-01-28 14:37:46,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:46,296 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 84 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:46,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 144 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:46,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1852 states. [2022-01-28 14:37:46,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1852 to 1214. [2022-01-28 14:37:46,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1214 states, 1213 states have (on average 3.8854080791426218) internal successors, (4713), 1213 states have internal predecessors, (4713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:46,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 4713 transitions. [2022-01-28 14:37:46,315 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 4713 transitions. Word has length 25 [2022-01-28 14:37:46,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:46,315 INFO L470 AbstractCegarLoop]: Abstraction has 1214 states and 4713 transitions. [2022-01-28 14:37:46,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:46,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 4713 transitions. [2022-01-28 14:37:46,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:46,317 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:46,317 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:46,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable550 [2022-01-28 14:37:46,317 INFO L402 AbstractCegarLoop]: === Iteration 552 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:46,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:46,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1595897621, now seen corresponding path program 547 times [2022-01-28 14:37:46,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:46,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292164225] [2022-01-28 14:37:46,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:46,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:46,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:46,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:46,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:46,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292164225] [2022-01-28 14:37:46,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292164225] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:46,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:46,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:46,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74458577] [2022-01-28 14:37:46,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:46,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:46,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:46,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:46,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:46,438 INFO L87 Difference]: Start difference. First operand 1214 states and 4713 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:46,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:46,512 INFO L93 Difference]: Finished difference Result 2479 states and 9008 transitions. [2022-01-28 14:37:46,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:46,512 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:46,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:46,516 INFO L225 Difference]: With dead ends: 2479 [2022-01-28 14:37:46,516 INFO L226 Difference]: Without dead ends: 2290 [2022-01-28 14:37:46,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:46,517 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 116 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:46,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 138 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:46,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2290 states. [2022-01-28 14:37:46,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2290 to 1254. [2022-01-28 14:37:46,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1254 states, 1253 states have (on average 3.8762968874700716) internal successors, (4857), 1253 states have internal predecessors, (4857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:46,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 4857 transitions. [2022-01-28 14:37:46,537 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 4857 transitions. Word has length 25 [2022-01-28 14:37:46,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:46,537 INFO L470 AbstractCegarLoop]: Abstraction has 1254 states and 4857 transitions. [2022-01-28 14:37:46,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:46,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 4857 transitions. [2022-01-28 14:37:46,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:46,539 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:46,539 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:46,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable551 [2022-01-28 14:37:46,539 INFO L402 AbstractCegarLoop]: === Iteration 553 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:46,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:46,540 INFO L85 PathProgramCache]: Analyzing trace with hash 203753075, now seen corresponding path program 548 times [2022-01-28 14:37:46,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:46,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914876728] [2022-01-28 14:37:46,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:46,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:46,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:46,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:46,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:46,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914876728] [2022-01-28 14:37:46,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914876728] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:46,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:46,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:46,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003466041] [2022-01-28 14:37:46,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:46,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:46,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:46,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:46,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:46,624 INFO L87 Difference]: Start difference. First operand 1254 states and 4857 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:46,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:46,694 INFO L93 Difference]: Finished difference Result 2473 states and 8963 transitions. [2022-01-28 14:37:46,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:46,694 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:46,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:46,699 INFO L225 Difference]: With dead ends: 2473 [2022-01-28 14:37:46,699 INFO L226 Difference]: Without dead ends: 2262 [2022-01-28 14:37:46,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:46,700 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 109 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:46,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 140 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:46,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2022-01-28 14:37:46,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 1226. [2022-01-28 14:37:46,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 1225 states have (on average 3.883265306122449) internal successors, (4757), 1225 states have internal predecessors, (4757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:46,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 4757 transitions. [2022-01-28 14:37:46,722 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 4757 transitions. Word has length 25 [2022-01-28 14:37:46,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:46,722 INFO L470 AbstractCegarLoop]: Abstraction has 1226 states and 4757 transitions. [2022-01-28 14:37:46,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:46,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 4757 transitions. [2022-01-28 14:37:46,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:46,724 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:46,724 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:46,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable552 [2022-01-28 14:37:46,724 INFO L402 AbstractCegarLoop]: === Iteration 554 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:46,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:46,724 INFO L85 PathProgramCache]: Analyzing trace with hash 749100659, now seen corresponding path program 549 times [2022-01-28 14:37:46,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:46,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517344487] [2022-01-28 14:37:46,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:46,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:46,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:46,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:46,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517344487] [2022-01-28 14:37:46,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517344487] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:46,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:46,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:46,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143974888] [2022-01-28 14:37:46,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:46,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:46,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:46,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:46,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:46,878 INFO L87 Difference]: Start difference. First operand 1226 states and 4757 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:46,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:46,964 INFO L93 Difference]: Finished difference Result 2381 states and 8631 transitions. [2022-01-28 14:37:46,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:46,965 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:46,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:46,981 INFO L225 Difference]: With dead ends: 2381 [2022-01-28 14:37:46,981 INFO L226 Difference]: Without dead ends: 2192 [2022-01-28 14:37:46,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:46,982 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 113 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:46,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 141 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:46,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2192 states. [2022-01-28 14:37:47,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2192 to 1250. [2022-01-28 14:37:47,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1249 states have (on average 3.8694955964771816) internal successors, (4833), 1249 states have internal predecessors, (4833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:47,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 4833 transitions. [2022-01-28 14:37:47,017 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 4833 transitions. Word has length 25 [2022-01-28 14:37:47,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:47,017 INFO L470 AbstractCegarLoop]: Abstraction has 1250 states and 4833 transitions. [2022-01-28 14:37:47,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:47,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 4833 transitions. [2022-01-28 14:37:47,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:47,019 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:47,019 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:47,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable553 [2022-01-28 14:37:47,019 INFO L402 AbstractCegarLoop]: === Iteration 555 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:47,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:47,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1702207757, now seen corresponding path program 550 times [2022-01-28 14:37:47,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:47,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372964956] [2022-01-28 14:37:47,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:47,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:47,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:47,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:47,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:47,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372964956] [2022-01-28 14:37:47,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372964956] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:47,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:47,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:47,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148263821] [2022-01-28 14:37:47,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:47,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:47,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:47,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:47,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:47,138 INFO L87 Difference]: Start difference. First operand 1250 states and 4833 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:47,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:47,233 INFO L93 Difference]: Finished difference Result 2239 states and 8177 transitions. [2022-01-28 14:37:47,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:47,233 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:47,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:47,237 INFO L225 Difference]: With dead ends: 2239 [2022-01-28 14:37:47,237 INFO L226 Difference]: Without dead ends: 2040 [2022-01-28 14:37:47,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:47,237 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 109 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:47,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 138 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:47,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2040 states. [2022-01-28 14:37:47,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2040 to 1226. [2022-01-28 14:37:47,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 1225 states have (on average 3.873469387755102) internal successors, (4745), 1225 states have internal predecessors, (4745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:47,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 4745 transitions. [2022-01-28 14:37:47,257 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 4745 transitions. Word has length 25 [2022-01-28 14:37:47,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:47,257 INFO L470 AbstractCegarLoop]: Abstraction has 1226 states and 4745 transitions. [2022-01-28 14:37:47,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:47,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 4745 transitions. [2022-01-28 14:37:47,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:47,258 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:47,259 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:47,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable554 [2022-01-28 14:37:47,259 INFO L402 AbstractCegarLoop]: === Iteration 556 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:47,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:47,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1113358033, now seen corresponding path program 551 times [2022-01-28 14:37:47,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:47,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774002197] [2022-01-28 14:37:47,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:47,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:47,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:47,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:47,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:47,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774002197] [2022-01-28 14:37:47,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774002197] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:47,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:47,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:47,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356425982] [2022-01-28 14:37:47,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:47,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:47,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:47,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:47,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:47,346 INFO L87 Difference]: Start difference. First operand 1226 states and 4745 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:47,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:47,444 INFO L93 Difference]: Finished difference Result 2247 states and 8217 transitions. [2022-01-28 14:37:47,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:47,444 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:47,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:47,449 INFO L225 Difference]: With dead ends: 2247 [2022-01-28 14:37:47,449 INFO L226 Difference]: Without dead ends: 2064 [2022-01-28 14:37:47,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:47,450 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 103 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:47,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 141 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:47,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2064 states. [2022-01-28 14:37:47,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2064 to 1250. [2022-01-28 14:37:47,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1249 states have (on average 3.8598879103282626) internal successors, (4821), 1249 states have internal predecessors, (4821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:47,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 4821 transitions. [2022-01-28 14:37:47,474 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 4821 transitions. Word has length 25 [2022-01-28 14:37:47,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:47,474 INFO L470 AbstractCegarLoop]: Abstraction has 1250 states and 4821 transitions. [2022-01-28 14:37:47,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:47,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 4821 transitions. [2022-01-28 14:37:47,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:47,476 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:47,476 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:47,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable555 [2022-01-28 14:37:47,476 INFO L402 AbstractCegarLoop]: === Iteration 557 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:47,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:47,476 INFO L85 PathProgramCache]: Analyzing trace with hash -2100546637, now seen corresponding path program 552 times [2022-01-28 14:37:47,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:47,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370458310] [2022-01-28 14:37:47,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:47,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:47,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:47,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:47,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:47,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370458310] [2022-01-28 14:37:47,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370458310] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:47,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:47,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:47,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747675529] [2022-01-28 14:37:47,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:47,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:47,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:47,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:47,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:47,558 INFO L87 Difference]: Start difference. First operand 1250 states and 4821 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:47,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:47,643 INFO L93 Difference]: Finished difference Result 2063 states and 7604 transitions. [2022-01-28 14:37:47,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:47,643 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:47,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:47,647 INFO L225 Difference]: With dead ends: 2063 [2022-01-28 14:37:47,647 INFO L226 Difference]: Without dead ends: 1848 [2022-01-28 14:37:47,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:47,647 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 86 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:47,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 146 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:47,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1848 states. [2022-01-28 14:37:47,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1848 to 1210. [2022-01-28 14:37:47,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 1209 states have (on average 3.889991728701406) internal successors, (4703), 1209 states have internal predecessors, (4703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:47,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 4703 transitions. [2022-01-28 14:37:47,666 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 4703 transitions. Word has length 25 [2022-01-28 14:37:47,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:47,666 INFO L470 AbstractCegarLoop]: Abstraction has 1210 states and 4703 transitions. [2022-01-28 14:37:47,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:47,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 4703 transitions. [2022-01-28 14:37:47,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:47,668 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:47,668 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:47,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable556 [2022-01-28 14:37:47,668 INFO L402 AbstractCegarLoop]: === Iteration 558 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:47,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:47,668 INFO L85 PathProgramCache]: Analyzing trace with hash -2045368683, now seen corresponding path program 553 times [2022-01-28 14:37:47,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:47,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95671530] [2022-01-28 14:37:47,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:47,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:47,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:47,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:47,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:47,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95671530] [2022-01-28 14:37:47,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95671530] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:47,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:47,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:47,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209844676] [2022-01-28 14:37:47,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:47,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:47,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:47,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:47,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:47,766 INFO L87 Difference]: Start difference. First operand 1210 states and 4703 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:47,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:47,834 INFO L93 Difference]: Finished difference Result 2385 states and 8635 transitions. [2022-01-28 14:37:47,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:47,834 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:47,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:47,839 INFO L225 Difference]: With dead ends: 2385 [2022-01-28 14:37:47,839 INFO L226 Difference]: Without dead ends: 2226 [2022-01-28 14:37:47,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:47,839 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 112 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:47,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 141 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:47,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2226 states. [2022-01-28 14:37:47,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2226 to 1226. [2022-01-28 14:37:47,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 1225 states have (on average 3.8783673469387754) internal successors, (4751), 1225 states have internal predecessors, (4751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:47,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 4751 transitions. [2022-01-28 14:37:47,859 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 4751 transitions. Word has length 25 [2022-01-28 14:37:47,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:47,859 INFO L470 AbstractCegarLoop]: Abstraction has 1226 states and 4751 transitions. [2022-01-28 14:37:47,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:47,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 4751 transitions. [2022-01-28 14:37:47,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:47,861 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:47,861 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:47,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable557 [2022-01-28 14:37:47,861 INFO L402 AbstractCegarLoop]: === Iteration 559 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:47,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:47,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1037070699, now seen corresponding path program 554 times [2022-01-28 14:37:47,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:47,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907407531] [2022-01-28 14:37:47,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:47,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:47,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:47,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:47,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:47,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907407531] [2022-01-28 14:37:47,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907407531] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:47,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:47,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:47,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305333606] [2022-01-28 14:37:47,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:47,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:47,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:47,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:47,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:47,966 INFO L87 Difference]: Start difference. First operand 1226 states and 4751 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:48,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:48,055 INFO L93 Difference]: Finished difference Result 2413 states and 8723 transitions. [2022-01-28 14:37:48,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:48,056 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:48,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:48,060 INFO L225 Difference]: With dead ends: 2413 [2022-01-28 14:37:48,060 INFO L226 Difference]: Without dead ends: 2210 [2022-01-28 14:37:48,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:48,060 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 108 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:48,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 152 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:48,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2210 states. [2022-01-28 14:37:48,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2210 to 1210. [2022-01-28 14:37:48,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 1209 states have (on average 3.8833746898263026) internal successors, (4695), 1209 states have internal predecessors, (4695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:48,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 4695 transitions. [2022-01-28 14:37:48,080 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 4695 transitions. Word has length 25 [2022-01-28 14:37:48,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:48,081 INFO L470 AbstractCegarLoop]: Abstraction has 1210 states and 4695 transitions. [2022-01-28 14:37:48,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:48,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 4695 transitions. [2022-01-28 14:37:48,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:48,082 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:48,082 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:48,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable558 [2022-01-28 14:37:48,082 INFO L402 AbstractCegarLoop]: === Iteration 560 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:48,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:48,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1402801651, now seen corresponding path program 555 times [2022-01-28 14:37:48,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:48,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463268618] [2022-01-28 14:37:48,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:48,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:48,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:48,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:48,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:48,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463268618] [2022-01-28 14:37:48,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463268618] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:48,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:48,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:48,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546558895] [2022-01-28 14:37:48,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:48,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:48,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:48,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:48,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:48,162 INFO L87 Difference]: Start difference. First operand 1210 states and 4695 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:48,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:48,230 INFO L93 Difference]: Finished difference Result 2381 states and 8615 transitions. [2022-01-28 14:37:48,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:48,230 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:48,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:48,234 INFO L225 Difference]: With dead ends: 2381 [2022-01-28 14:37:48,234 INFO L226 Difference]: Without dead ends: 2222 [2022-01-28 14:37:48,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:48,234 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 132 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:48,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 126 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:48,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2022-01-28 14:37:48,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 1226. [2022-01-28 14:37:48,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 1225 states have (on average 3.8718367346938773) internal successors, (4743), 1225 states have internal predecessors, (4743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:48,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 4743 transitions. [2022-01-28 14:37:48,254 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 4743 transitions. Word has length 25 [2022-01-28 14:37:48,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:48,254 INFO L470 AbstractCegarLoop]: Abstraction has 1226 states and 4743 transitions. [2022-01-28 14:37:48,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:48,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 4743 transitions. [2022-01-28 14:37:48,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:48,256 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:48,256 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:48,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable559 [2022-01-28 14:37:48,256 INFO L402 AbstractCegarLoop]: === Iteration 561 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:48,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:48,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1372941973, now seen corresponding path program 556 times [2022-01-28 14:37:48,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:48,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663905914] [2022-01-28 14:37:48,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:48,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:48,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:48,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:48,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663905914] [2022-01-28 14:37:48,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663905914] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:48,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:48,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:48,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631849182] [2022-01-28 14:37:48,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:48,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:48,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:48,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:48,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:48,334 INFO L87 Difference]: Start difference. First operand 1226 states and 4743 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:48,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:48,408 INFO L93 Difference]: Finished difference Result 2405 states and 8691 transitions. [2022-01-28 14:37:48,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:48,408 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:48,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:48,413 INFO L225 Difference]: With dead ends: 2405 [2022-01-28 14:37:48,413 INFO L226 Difference]: Without dead ends: 2206 [2022-01-28 14:37:48,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:48,413 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 104 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:48,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 140 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:48,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2206 states. [2022-01-28 14:37:48,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2206 to 1210. [2022-01-28 14:37:48,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 1209 states have (on average 3.876757650951199) internal successors, (4687), 1209 states have internal predecessors, (4687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:48,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 4687 transitions. [2022-01-28 14:37:48,433 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 4687 transitions. Word has length 25 [2022-01-28 14:37:48,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:48,433 INFO L470 AbstractCegarLoop]: Abstraction has 1210 states and 4687 transitions. [2022-01-28 14:37:48,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:48,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 4687 transitions. [2022-01-28 14:37:48,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:48,435 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:48,435 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:48,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable560 [2022-01-28 14:37:48,435 INFO L402 AbstractCegarLoop]: === Iteration 562 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:48,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:48,436 INFO L85 PathProgramCache]: Analyzing trace with hash -987502955, now seen corresponding path program 557 times [2022-01-28 14:37:48,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:48,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238910296] [2022-01-28 14:37:48,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:48,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:48,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:48,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:48,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:48,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238910296] [2022-01-28 14:37:48,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238910296] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:48,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:48,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:48,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515620114] [2022-01-28 14:37:48,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:48,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:48,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:48,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:48,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:48,513 INFO L87 Difference]: Start difference. First operand 1210 states and 4687 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:48,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:48,588 INFO L93 Difference]: Finished difference Result 2449 states and 8867 transitions. [2022-01-28 14:37:48,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:48,588 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:48,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:48,592 INFO L225 Difference]: With dead ends: 2449 [2022-01-28 14:37:48,592 INFO L226 Difference]: Without dead ends: 2262 [2022-01-28 14:37:48,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:48,593 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 108 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:48,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 149 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:48,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2022-01-28 14:37:48,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 1238. [2022-01-28 14:37:48,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 1237 states have (on average 3.860145513338723) internal successors, (4775), 1237 states have internal predecessors, (4775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:48,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 4775 transitions. [2022-01-28 14:37:48,613 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 4775 transitions. Word has length 25 [2022-01-28 14:37:48,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:48,613 INFO L470 AbstractCegarLoop]: Abstraction has 1238 states and 4775 transitions. [2022-01-28 14:37:48,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:48,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 4775 transitions. [2022-01-28 14:37:48,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:48,615 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:48,615 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:48,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable561 [2022-01-28 14:37:48,615 INFO L402 AbstractCegarLoop]: === Iteration 563 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:48,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:48,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1264127347, now seen corresponding path program 558 times [2022-01-28 14:37:48,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:48,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991113672] [2022-01-28 14:37:48,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:48,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:48,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:48,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:48,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:48,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991113672] [2022-01-28 14:37:48,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991113672] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:48,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:48,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:48,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884777456] [2022-01-28 14:37:48,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:48,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:48,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:48,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:48,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:48,694 INFO L87 Difference]: Start difference. First operand 1238 states and 4775 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:48,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:48,763 INFO L93 Difference]: Finished difference Result 2445 states and 8827 transitions. [2022-01-28 14:37:48,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:48,763 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:48,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:48,767 INFO L225 Difference]: With dead ends: 2445 [2022-01-28 14:37:48,768 INFO L226 Difference]: Without dead ends: 2226 [2022-01-28 14:37:48,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:48,768 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 124 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:48,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 128 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:48,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2226 states. [2022-01-28 14:37:48,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2226 to 1202. [2022-01-28 14:37:48,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1202 states, 1201 states have (on average 3.8825978351373855) internal successors, (4663), 1201 states have internal predecessors, (4663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:48,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 4663 transitions. [2022-01-28 14:37:48,787 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 4663 transitions. Word has length 25 [2022-01-28 14:37:48,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:48,787 INFO L470 AbstractCegarLoop]: Abstraction has 1202 states and 4663 transitions. [2022-01-28 14:37:48,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:48,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 4663 transitions. [2022-01-28 14:37:48,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:48,789 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:48,789 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:48,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable562 [2022-01-28 14:37:48,789 INFO L402 AbstractCegarLoop]: === Iteration 564 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:48,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:48,790 INFO L85 PathProgramCache]: Analyzing trace with hash 226537075, now seen corresponding path program 559 times [2022-01-28 14:37:48,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:48,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844434515] [2022-01-28 14:37:48,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:48,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:48,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:48,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:48,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844434515] [2022-01-28 14:37:48,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844434515] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:48,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:48,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:48,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808309849] [2022-01-28 14:37:48,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:48,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:48,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:48,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:48,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:48,870 INFO L87 Difference]: Start difference. First operand 1202 states and 4663 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:48,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:48,937 INFO L93 Difference]: Finished difference Result 2349 states and 8487 transitions. [2022-01-28 14:37:48,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:48,937 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:48,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:48,941 INFO L225 Difference]: With dead ends: 2349 [2022-01-28 14:37:48,942 INFO L226 Difference]: Without dead ends: 2190 [2022-01-28 14:37:48,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:48,942 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 116 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:48,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 137 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:48,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2190 states. [2022-01-28 14:37:48,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2190 to 1202. [2022-01-28 14:37:48,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1202 states, 1201 states have (on average 3.869275603663614) internal successors, (4647), 1201 states have internal predecessors, (4647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:48,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 4647 transitions. [2022-01-28 14:37:48,963 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 4647 transitions. Word has length 25 [2022-01-28 14:37:48,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:48,963 INFO L470 AbstractCegarLoop]: Abstraction has 1202 states and 4647 transitions. [2022-01-28 14:37:48,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:48,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 4647 transitions. [2022-01-28 14:37:48,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:48,965 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:48,965 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:48,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable563 [2022-01-28 14:37:48,965 INFO L402 AbstractCegarLoop]: === Iteration 565 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:48,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:48,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1234835059, now seen corresponding path program 560 times [2022-01-28 14:37:48,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:48,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697629814] [2022-01-28 14:37:48,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:48,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:48,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:49,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:49,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:49,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697629814] [2022-01-28 14:37:49,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697629814] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:49,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:49,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:49,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925525011] [2022-01-28 14:37:49,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:49,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:49,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:49,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:49,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:49,061 INFO L87 Difference]: Start difference. First operand 1202 states and 4647 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:49,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:49,132 INFO L93 Difference]: Finished difference Result 2377 states and 8575 transitions. [2022-01-28 14:37:49,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:49,132 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:49,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:49,137 INFO L225 Difference]: With dead ends: 2377 [2022-01-28 14:37:49,137 INFO L226 Difference]: Without dead ends: 2174 [2022-01-28 14:37:49,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:49,137 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 117 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:49,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 143 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:49,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2174 states. [2022-01-28 14:37:49,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2174 to 1186. [2022-01-28 14:37:49,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 1185 states have (on average 3.8742616033755275) internal successors, (4591), 1185 states have internal predecessors, (4591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:49,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 4591 transitions. [2022-01-28 14:37:49,156 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 4591 transitions. Word has length 25 [2022-01-28 14:37:49,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:49,156 INFO L470 AbstractCegarLoop]: Abstraction has 1186 states and 4591 transitions. [2022-01-28 14:37:49,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:49,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 4591 transitions. [2022-01-28 14:37:49,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:49,158 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:49,158 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:49,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable564 [2022-01-28 14:37:49,158 INFO L402 AbstractCegarLoop]: === Iteration 566 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:49,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:49,158 INFO L85 PathProgramCache]: Analyzing trace with hash -569489805, now seen corresponding path program 561 times [2022-01-28 14:37:49,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:49,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393838232] [2022-01-28 14:37:49,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:49,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:49,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:49,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:49,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393838232] [2022-01-28 14:37:49,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393838232] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:49,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:49,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:49,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367534803] [2022-01-28 14:37:49,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:49,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:49,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:49,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:49,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:49,236 INFO L87 Difference]: Start difference. First operand 1186 states and 4591 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:49,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:49,302 INFO L93 Difference]: Finished difference Result 2305 states and 8327 transitions. [2022-01-28 14:37:49,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:49,302 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:49,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:49,306 INFO L225 Difference]: With dead ends: 2305 [2022-01-28 14:37:49,306 INFO L226 Difference]: Without dead ends: 2146 [2022-01-28 14:37:49,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:49,306 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 119 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:49,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 138 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:49,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2146 states. [2022-01-28 14:37:49,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2146 to 1202. [2022-01-28 14:37:49,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1202 states, 1201 states have (on average 3.8626144879267277) internal successors, (4639), 1201 states have internal predecessors, (4639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:49,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 4639 transitions. [2022-01-28 14:37:49,326 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 4639 transitions. Word has length 25 [2022-01-28 14:37:49,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:49,326 INFO L470 AbstractCegarLoop]: Abstraction has 1202 states and 4639 transitions. [2022-01-28 14:37:49,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:49,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 4639 transitions. [2022-01-28 14:37:49,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:49,327 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:49,328 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:49,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable565 [2022-01-28 14:37:49,328 INFO L402 AbstractCegarLoop]: === Iteration 567 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:49,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:49,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1215021419, now seen corresponding path program 562 times [2022-01-28 14:37:49,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:49,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027999998] [2022-01-28 14:37:49,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:49,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:49,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:49,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:49,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:49,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027999998] [2022-01-28 14:37:49,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027999998] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:49,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:49,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:49,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054909626] [2022-01-28 14:37:49,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:49,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:49,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:49,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:49,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:49,424 INFO L87 Difference]: Start difference. First operand 1202 states and 4639 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:49,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:49,497 INFO L93 Difference]: Finished difference Result 2193 states and 7990 transitions. [2022-01-28 14:37:49,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:49,497 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:49,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:49,501 INFO L225 Difference]: With dead ends: 2193 [2022-01-28 14:37:49,501 INFO L226 Difference]: Without dead ends: 2002 [2022-01-28 14:37:49,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:49,501 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 106 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:49,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 146 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:49,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2002 states. [2022-01-28 14:37:49,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2002 to 1186. [2022-01-28 14:37:49,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 1185 states have (on average 3.8675105485232066) internal successors, (4583), 1185 states have internal predecessors, (4583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:49,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 4583 transitions. [2022-01-28 14:37:49,520 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 4583 transitions. Word has length 25 [2022-01-28 14:37:49,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:49,520 INFO L470 AbstractCegarLoop]: Abstraction has 1186 states and 4583 transitions. [2022-01-28 14:37:49,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:49,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 4583 transitions. [2022-01-28 14:37:49,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:49,522 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:49,522 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:49,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable566 [2022-01-28 14:37:49,522 INFO L402 AbstractCegarLoop]: === Iteration 568 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:49,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:49,522 INFO L85 PathProgramCache]: Analyzing trace with hash 47302293, now seen corresponding path program 563 times [2022-01-28 14:37:49,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:49,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213594999] [2022-01-28 14:37:49,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:49,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:49,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:49,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:49,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:49,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213594999] [2022-01-28 14:37:49,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213594999] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:49,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:49,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:49,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92506972] [2022-01-28 14:37:49,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:49,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:49,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:49,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:49,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:49,598 INFO L87 Difference]: Start difference. First operand 1186 states and 4583 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:49,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:49,679 INFO L93 Difference]: Finished difference Result 2341 states and 8459 transitions. [2022-01-28 14:37:49,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:49,679 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:49,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:49,684 INFO L225 Difference]: With dead ends: 2341 [2022-01-28 14:37:49,684 INFO L226 Difference]: Without dead ends: 2154 [2022-01-28 14:37:49,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:49,684 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 100 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:49,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 149 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:49,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2154 states. [2022-01-28 14:37:49,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2154 to 1210. [2022-01-28 14:37:49,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 1209 states have (on average 3.8535980148883375) internal successors, (4659), 1209 states have internal predecessors, (4659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:49,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 4659 transitions. [2022-01-28 14:37:49,703 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 4659 transitions. Word has length 25 [2022-01-28 14:37:49,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:49,703 INFO L470 AbstractCegarLoop]: Abstraction has 1210 states and 4659 transitions. [2022-01-28 14:37:49,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:49,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 4659 transitions. [2022-01-28 14:37:49,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:49,705 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:49,705 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:49,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable567 [2022-01-28 14:37:49,705 INFO L402 AbstractCegarLoop]: === Iteration 569 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:49,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:49,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1344842253, now seen corresponding path program 564 times [2022-01-28 14:37:49,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:49,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877722512] [2022-01-28 14:37:49,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:49,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:49,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:49,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:49,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:49,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877722512] [2022-01-28 14:37:49,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877722512] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:49,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:49,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:49,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44361733] [2022-01-28 14:37:49,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:49,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:49,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:49,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:49,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:49,806 INFO L87 Difference]: Start difference. First operand 1210 states and 4659 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:49,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:49,889 INFO L93 Difference]: Finished difference Result 2201 states and 8010 transitions. [2022-01-28 14:37:49,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:49,889 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:49,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:49,893 INFO L225 Difference]: With dead ends: 2201 [2022-01-28 14:37:49,893 INFO L226 Difference]: Without dead ends: 1994 [2022-01-28 14:37:49,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:49,893 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 87 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:49,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 167 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:49,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1994 states. [2022-01-28 14:37:49,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1994 to 1178. [2022-01-28 14:37:49,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 1177 states have (on average 3.873406966864911) internal successors, (4559), 1177 states have internal predecessors, (4559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:49,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 4559 transitions. [2022-01-28 14:37:49,911 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 4559 transitions. Word has length 25 [2022-01-28 14:37:49,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:49,912 INFO L470 AbstractCegarLoop]: Abstraction has 1178 states and 4559 transitions. [2022-01-28 14:37:49,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:49,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 4559 transitions. [2022-01-28 14:37:49,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:49,913 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:49,913 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:49,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable568 [2022-01-28 14:37:49,913 INFO L402 AbstractCegarLoop]: === Iteration 570 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:49,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:49,913 INFO L85 PathProgramCache]: Analyzing trace with hash -630210991, now seen corresponding path program 565 times [2022-01-28 14:37:49,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:49,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873696913] [2022-01-28 14:37:49,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:49,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:49,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:49,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:49,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:49,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873696913] [2022-01-28 14:37:49,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873696913] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:49,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:49,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:49,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623629423] [2022-01-28 14:37:49,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:49,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:49,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:49,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:49,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:49,996 INFO L87 Difference]: Start difference. First operand 1178 states and 4559 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:50,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:50,072 INFO L93 Difference]: Finished difference Result 2285 states and 8247 transitions. [2022-01-28 14:37:50,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:50,072 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:50,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:50,076 INFO L225 Difference]: With dead ends: 2285 [2022-01-28 14:37:50,076 INFO L226 Difference]: Without dead ends: 2126 [2022-01-28 14:37:50,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:50,076 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 102 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:50,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 158 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:50,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2126 states. [2022-01-28 14:37:50,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2126 to 1178. [2022-01-28 14:37:50,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 1177 states have (on average 3.8598130841121496) internal successors, (4543), 1177 states have internal predecessors, (4543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:50,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 4543 transitions. [2022-01-28 14:37:50,095 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 4543 transitions. Word has length 25 [2022-01-28 14:37:50,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:50,095 INFO L470 AbstractCegarLoop]: Abstraction has 1178 states and 4543 transitions. [2022-01-28 14:37:50,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:50,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 4543 transitions. [2022-01-28 14:37:50,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:50,097 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:50,097 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:50,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable569 [2022-01-28 14:37:50,097 INFO L402 AbstractCegarLoop]: === Iteration 571 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:50,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:50,097 INFO L85 PathProgramCache]: Analyzing trace with hash -660070669, now seen corresponding path program 566 times [2022-01-28 14:37:50,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:50,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455378728] [2022-01-28 14:37:50,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:50,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:50,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:50,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:50,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:50,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455378728] [2022-01-28 14:37:50,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455378728] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:50,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:50,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:50,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226354728] [2022-01-28 14:37:50,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:50,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:50,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:50,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:50,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:50,177 INFO L87 Difference]: Start difference. First operand 1178 states and 4543 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:50,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:50,254 INFO L93 Difference]: Finished difference Result 2309 states and 8323 transitions. [2022-01-28 14:37:50,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:50,255 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:50,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:50,258 INFO L225 Difference]: With dead ends: 2309 [2022-01-28 14:37:50,258 INFO L226 Difference]: Without dead ends: 2110 [2022-01-28 14:37:50,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:50,259 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 108 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:50,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 148 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:50,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2022-01-28 14:37:50,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 1162. [2022-01-28 14:37:50,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 1161 states have (on average 3.8647717484926787) internal successors, (4487), 1161 states have internal predecessors, (4487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:50,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 4487 transitions. [2022-01-28 14:37:50,277 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 4487 transitions. Word has length 25 [2022-01-28 14:37:50,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:50,277 INFO L470 AbstractCegarLoop]: Abstraction has 1162 states and 4487 transitions. [2022-01-28 14:37:50,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:50,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 4487 transitions. [2022-01-28 14:37:50,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:50,279 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:50,279 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:50,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable570 [2022-01-28 14:37:50,279 INFO L402 AbstractCegarLoop]: === Iteration 572 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:50,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:50,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1111113037, now seen corresponding path program 567 times [2022-01-28 14:37:50,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:50,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316702910] [2022-01-28 14:37:50,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:50,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:50,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:50,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:50,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:50,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316702910] [2022-01-28 14:37:50,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316702910] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:50,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:50,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:50,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979029814] [2022-01-28 14:37:50,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:50,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:50,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:50,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:50,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:50,363 INFO L87 Difference]: Start difference. First operand 1162 states and 4487 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:50,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:50,455 INFO L93 Difference]: Finished difference Result 2229 states and 8035 transitions. [2022-01-28 14:37:50,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:50,455 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:50,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:50,459 INFO L225 Difference]: With dead ends: 2229 [2022-01-28 14:37:50,459 INFO L226 Difference]: Without dead ends: 2070 [2022-01-28 14:37:50,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:50,459 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 140 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:50,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 129 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:50,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2070 states. [2022-01-28 14:37:50,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2070 to 1130. [2022-01-28 14:37:50,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 1129 states have (on average 3.8609388839681134) internal successors, (4359), 1129 states have internal predecessors, (4359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:50,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 4359 transitions. [2022-01-28 14:37:50,477 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 4359 transitions. Word has length 25 [2022-01-28 14:37:50,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:50,477 INFO L470 AbstractCegarLoop]: Abstraction has 1130 states and 4359 transitions. [2022-01-28 14:37:50,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:50,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 4359 transitions. [2022-01-28 14:37:50,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:50,478 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:50,479 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:50,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable571 [2022-01-28 14:37:50,479 INFO L402 AbstractCegarLoop]: === Iteration 573 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:50,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:50,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1056884339, now seen corresponding path program 568 times [2022-01-28 14:37:50,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:50,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125081468] [2022-01-28 14:37:50,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:50,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:50,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:50,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:50,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:50,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125081468] [2022-01-28 14:37:50,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125081468] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:50,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:50,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:50,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300867785] [2022-01-28 14:37:50,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:50,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:50,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:50,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:50,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:50,568 INFO L87 Difference]: Start difference. First operand 1130 states and 4359 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:50,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:50,676 INFO L93 Difference]: Finished difference Result 2117 states and 7698 transitions. [2022-01-28 14:37:50,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:50,676 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:50,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:50,680 INFO L225 Difference]: With dead ends: 2117 [2022-01-28 14:37:50,680 INFO L226 Difference]: Without dead ends: 1926 [2022-01-28 14:37:50,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:50,680 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 103 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:50,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 139 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:50,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1926 states. [2022-01-28 14:37:50,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1926 to 1114. [2022-01-28 14:37:50,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1114 states, 1113 states have (on average 3.866127583108715) internal successors, (4303), 1113 states have internal predecessors, (4303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:50,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 4303 transitions. [2022-01-28 14:37:50,697 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 4303 transitions. Word has length 25 [2022-01-28 14:37:50,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:50,698 INFO L470 AbstractCegarLoop]: Abstraction has 1114 states and 4303 transitions. [2022-01-28 14:37:50,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:50,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 4303 transitions. [2022-01-28 14:37:50,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:50,699 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:50,699 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:50,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable572 [2022-01-28 14:37:50,699 INFO L402 AbstractCegarLoop]: === Iteration 574 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:50,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:50,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1754306197, now seen corresponding path program 569 times [2022-01-28 14:37:50,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:50,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888883309] [2022-01-28 14:37:50,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:50,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:50,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:50,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:50,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:50,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888883309] [2022-01-28 14:37:50,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888883309] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:50,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:50,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:50,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872675557] [2022-01-28 14:37:50,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:50,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:50,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:50,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:50,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:50,852 INFO L87 Difference]: Start difference. First operand 1114 states and 4303 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:50,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:50,956 INFO L93 Difference]: Finished difference Result 2133 states and 7770 transitions. [2022-01-28 14:37:50,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:50,956 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:50,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:50,960 INFO L225 Difference]: With dead ends: 2133 [2022-01-28 14:37:50,960 INFO L226 Difference]: Without dead ends: 1950 [2022-01-28 14:37:50,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:50,960 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 94 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:50,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 158 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:50,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1950 states. [2022-01-28 14:37:50,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1950 to 1138. [2022-01-28 14:37:50,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1138 states, 1137 states have (on average 3.851363236587511) internal successors, (4379), 1137 states have internal predecessors, (4379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:50,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 4379 transitions. [2022-01-28 14:37:50,978 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 4379 transitions. Word has length 25 [2022-01-28 14:37:50,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:50,978 INFO L470 AbstractCegarLoop]: Abstraction has 1138 states and 4379 transitions. [2022-01-28 14:37:50,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:50,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 4379 transitions. [2022-01-28 14:37:50,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:50,980 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:50,980 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:50,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable573 [2022-01-28 14:37:50,980 INFO L402 AbstractCegarLoop]: === Iteration 575 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:50,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:50,980 INFO L85 PathProgramCache]: Analyzing trace with hash -289030797, now seen corresponding path program 570 times [2022-01-28 14:37:50,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:50,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935966229] [2022-01-28 14:37:50,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:50,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:50,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:51,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:51,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:51,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935966229] [2022-01-28 14:37:51,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935966229] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:51,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:51,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:51,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317127777] [2022-01-28 14:37:51,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:51,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:51,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:51,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:51,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:51,072 INFO L87 Difference]: Start difference. First operand 1138 states and 4379 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:51,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:51,146 INFO L93 Difference]: Finished difference Result 1949 states and 7157 transitions. [2022-01-28 14:37:51,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:51,147 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:51,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:51,150 INFO L225 Difference]: With dead ends: 1949 [2022-01-28 14:37:51,150 INFO L226 Difference]: Without dead ends: 1742 [2022-01-28 14:37:51,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:51,150 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 85 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:51,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 144 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:51,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2022-01-28 14:37:51,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 1106. [2022-01-28 14:37:51,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 1105 states have (on average 3.872398190045249) internal successors, (4279), 1105 states have internal predecessors, (4279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:51,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 4279 transitions. [2022-01-28 14:37:51,167 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 4279 transitions. Word has length 25 [2022-01-28 14:37:51,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:51,168 INFO L470 AbstractCegarLoop]: Abstraction has 1106 states and 4279 transitions. [2022-01-28 14:37:51,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:51,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 4279 transitions. [2022-01-28 14:37:51,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:51,169 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:51,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:51,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable574 [2022-01-28 14:37:51,169 INFO L402 AbstractCegarLoop]: === Iteration 576 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:51,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:51,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1300549995, now seen corresponding path program 571 times [2022-01-28 14:37:51,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:51,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704271481] [2022-01-28 14:37:51,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:51,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:51,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:51,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:51,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:51,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704271481] [2022-01-28 14:37:51,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704271481] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:51,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:51,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:51,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730826513] [2022-01-28 14:37:51,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:51,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:51,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:51,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:51,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:51,258 INFO L87 Difference]: Start difference. First operand 1106 states and 4279 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:51,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:51,341 INFO L93 Difference]: Finished difference Result 2181 states and 7970 transitions. [2022-01-28 14:37:51,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:51,341 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:51,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:51,345 INFO L225 Difference]: With dead ends: 2181 [2022-01-28 14:37:51,345 INFO L226 Difference]: Without dead ends: 1994 [2022-01-28 14:37:51,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:51,345 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 110 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:51,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 134 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:51,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1994 states. [2022-01-28 14:37:51,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1994 to 1146. [2022-01-28 14:37:51,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 1145 states have (on average 3.862882096069869) internal successors, (4423), 1145 states have internal predecessors, (4423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:51,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 4423 transitions. [2022-01-28 14:37:51,382 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 4423 transitions. Word has length 25 [2022-01-28 14:37:51,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:51,382 INFO L470 AbstractCegarLoop]: Abstraction has 1146 states and 4423 transitions. [2022-01-28 14:37:51,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:51,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 4423 transitions. [2022-01-28 14:37:51,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:51,384 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:51,384 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:51,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable575 [2022-01-28 14:37:51,384 INFO L402 AbstractCegarLoop]: === Iteration 577 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:51,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:51,384 INFO L85 PathProgramCache]: Analyzing trace with hash 951080307, now seen corresponding path program 572 times [2022-01-28 14:37:51,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:51,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566797361] [2022-01-28 14:37:51,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:51,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:51,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:51,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:51,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:51,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566797361] [2022-01-28 14:37:51,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566797361] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:51,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:51,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:51,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827177067] [2022-01-28 14:37:51,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:51,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:51,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:51,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:51,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:51,465 INFO L87 Difference]: Start difference. First operand 1146 states and 4423 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:51,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:51,533 INFO L93 Difference]: Finished difference Result 2177 states and 7930 transitions. [2022-01-28 14:37:51,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:51,533 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:51,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:51,537 INFO L225 Difference]: With dead ends: 2177 [2022-01-28 14:37:51,537 INFO L226 Difference]: Without dead ends: 1966 [2022-01-28 14:37:51,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:51,537 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 107 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:51,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 138 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:51,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1966 states. [2022-01-28 14:37:51,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1966 to 1118. [2022-01-28 14:37:51,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1118 states, 1117 states have (on average 3.8701880035810206) internal successors, (4323), 1117 states have internal predecessors, (4323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:51,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1118 states to 1118 states and 4323 transitions. [2022-01-28 14:37:51,555 INFO L78 Accepts]: Start accepts. Automaton has 1118 states and 4323 transitions. Word has length 25 [2022-01-28 14:37:51,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:51,555 INFO L470 AbstractCegarLoop]: Abstraction has 1118 states and 4323 transitions. [2022-01-28 14:37:51,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:51,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1118 states and 4323 transitions. [2022-01-28 14:37:51,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:51,557 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:51,557 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:51,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable576 [2022-01-28 14:37:51,557 INFO L402 AbstractCegarLoop]: === Iteration 578 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:51,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:51,557 INFO L85 PathProgramCache]: Analyzing trace with hash -2147346957, now seen corresponding path program 573 times [2022-01-28 14:37:51,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:51,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964306347] [2022-01-28 14:37:51,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:51,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:51,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:51,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:51,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:51,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964306347] [2022-01-28 14:37:51,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964306347] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:51,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:51,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:51,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457961684] [2022-01-28 14:37:51,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:51,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:51,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:51,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:51,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:51,638 INFO L87 Difference]: Start difference. First operand 1118 states and 4323 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:51,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:51,744 INFO L93 Difference]: Finished difference Result 2093 states and 7626 transitions. [2022-01-28 14:37:51,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:51,744 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:51,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:51,749 INFO L225 Difference]: With dead ends: 2093 [2022-01-28 14:37:51,749 INFO L226 Difference]: Without dead ends: 1906 [2022-01-28 14:37:51,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:51,749 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 97 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:51,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 141 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:51,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1906 states. [2022-01-28 14:37:51,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1906 to 1142. [2022-01-28 14:37:51,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1142 states, 1141 states have (on average 3.855390008764242) internal successors, (4399), 1141 states have internal predecessors, (4399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:51,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 4399 transitions. [2022-01-28 14:37:51,770 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 4399 transitions. Word has length 25 [2022-01-28 14:37:51,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:51,770 INFO L470 AbstractCegarLoop]: Abstraction has 1142 states and 4399 transitions. [2022-01-28 14:37:51,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:51,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 4399 transitions. [2022-01-28 14:37:51,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:51,772 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:51,772 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:51,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable577 [2022-01-28 14:37:51,772 INFO L402 AbstractCegarLoop]: === Iteration 579 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:51,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:51,772 INFO L85 PathProgramCache]: Analyzing trace with hash -954880525, now seen corresponding path program 574 times [2022-01-28 14:37:51,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:51,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816840390] [2022-01-28 14:37:51,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:51,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:51,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:51,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:51,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:51,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816840390] [2022-01-28 14:37:51,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816840390] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:51,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:51,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:51,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126815876] [2022-01-28 14:37:51,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:51,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:51,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:51,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:51,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:51,896 INFO L87 Difference]: Start difference. First operand 1142 states and 4399 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:51,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:51,995 INFO L93 Difference]: Finished difference Result 1953 states and 7177 transitions. [2022-01-28 14:37:51,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:51,995 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:51,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:51,998 INFO L225 Difference]: With dead ends: 1953 [2022-01-28 14:37:51,999 INFO L226 Difference]: Without dead ends: 1754 [2022-01-28 14:37:51,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:51,999 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 105 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:51,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 128 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:52,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1754 states. [2022-01-28 14:37:52,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1754 to 1118. [2022-01-28 14:37:52,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1118 states, 1117 states have (on average 3.8594449418084156) internal successors, (4311), 1117 states have internal predecessors, (4311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:52,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1118 states to 1118 states and 4311 transitions. [2022-01-28 14:37:52,016 INFO L78 Accepts]: Start accepts. Automaton has 1118 states and 4311 transitions. Word has length 25 [2022-01-28 14:37:52,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:52,016 INFO L470 AbstractCegarLoop]: Abstraction has 1118 states and 4311 transitions. [2022-01-28 14:37:52,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:52,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1118 states and 4311 transitions. [2022-01-28 14:37:52,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:52,018 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:52,018 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:52,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable578 [2022-01-28 14:37:52,018 INFO L402 AbstractCegarLoop]: === Iteration 580 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:52,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:52,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1164999343, now seen corresponding path program 575 times [2022-01-28 14:37:52,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:52,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087897922] [2022-01-28 14:37:52,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:52,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:52,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:52,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:52,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:52,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087897922] [2022-01-28 14:37:52,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087897922] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:52,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:52,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:52,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955002279] [2022-01-28 14:37:52,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:52,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:52,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:52,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:52,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:52,152 INFO L87 Difference]: Start difference. First operand 1118 states and 4311 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:52,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:52,247 INFO L93 Difference]: Finished difference Result 1881 states and 6913 transitions. [2022-01-28 14:37:52,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:52,248 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:52,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:52,251 INFO L225 Difference]: With dead ends: 1881 [2022-01-28 14:37:52,251 INFO L226 Difference]: Without dead ends: 1698 [2022-01-28 14:37:52,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:52,252 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 82 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:52,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 139 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:52,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1698 states. [2022-01-28 14:37:52,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1698 to 1142. [2022-01-28 14:37:52,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1142 states, 1141 states have (on average 3.8448729184925505) internal successors, (4387), 1141 states have internal predecessors, (4387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:52,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 4387 transitions. [2022-01-28 14:37:52,271 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 4387 transitions. Word has length 25 [2022-01-28 14:37:52,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:52,271 INFO L470 AbstractCegarLoop]: Abstraction has 1142 states and 4387 transitions. [2022-01-28 14:37:52,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:52,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 4387 transitions. [2022-01-28 14:37:52,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:52,273 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:52,273 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:52,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable579 [2022-01-28 14:37:52,273 INFO L402 AbstractCegarLoop]: === Iteration 581 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:52,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:52,273 INFO L85 PathProgramCache]: Analyzing trace with hash -83936717, now seen corresponding path program 576 times [2022-01-28 14:37:52,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:52,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036433393] [2022-01-28 14:37:52,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:52,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:52,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:52,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:52,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:52,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036433393] [2022-01-28 14:37:52,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036433393] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:52,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:52,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:52,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229132754] [2022-01-28 14:37:52,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:52,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:52,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:52,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:52,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:52,391 INFO L87 Difference]: Start difference. First operand 1142 states and 4387 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:52,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:52,477 INFO L93 Difference]: Finished difference Result 1697 states and 6300 transitions. [2022-01-28 14:37:52,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:52,477 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:52,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:52,480 INFO L225 Difference]: With dead ends: 1697 [2022-01-28 14:37:52,480 INFO L226 Difference]: Without dead ends: 1482 [2022-01-28 14:37:52,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:52,480 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 77 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:52,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 123 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:52,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2022-01-28 14:37:52,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1102. [2022-01-28 14:37:52,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 1101 states have (on average 3.877384196185286) internal successors, (4269), 1101 states have internal predecessors, (4269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:52,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 4269 transitions. [2022-01-28 14:37:52,496 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 4269 transitions. Word has length 25 [2022-01-28 14:37:52,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:52,496 INFO L470 AbstractCegarLoop]: Abstraction has 1102 states and 4269 transitions. [2022-01-28 14:37:52,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:52,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 4269 transitions. [2022-01-28 14:37:52,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:52,498 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:52,498 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:52,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable580 [2022-01-28 14:37:52,498 INFO L402 AbstractCegarLoop]: === Iteration 582 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:52,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:52,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1629748617, now seen corresponding path program 577 times [2022-01-28 14:37:52,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:52,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101955158] [2022-01-28 14:37:52,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:52,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:52,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:52,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:52,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:52,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101955158] [2022-01-28 14:37:52,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101955158] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:52,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:52,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:52,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040615813] [2022-01-28 14:37:52,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:52,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:52,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:52,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:52,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:52,616 INFO L87 Difference]: Start difference. First operand 1102 states and 4269 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:52,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:52,713 INFO L93 Difference]: Finished difference Result 2267 states and 8325 transitions. [2022-01-28 14:37:52,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:52,713 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:52,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:52,718 INFO L225 Difference]: With dead ends: 2267 [2022-01-28 14:37:52,718 INFO L226 Difference]: Without dead ends: 2078 [2022-01-28 14:37:52,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:52,718 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 107 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:52,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 134 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:52,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2078 states. [2022-01-28 14:37:52,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2078 to 1152. [2022-01-28 14:37:52,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1152 states, 1151 states have (on average 3.8731537793223283) internal successors, (4458), 1151 states have internal predecessors, (4458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:52,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 4458 transitions. [2022-01-28 14:37:52,737 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 4458 transitions. Word has length 25 [2022-01-28 14:37:52,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:52,737 INFO L470 AbstractCegarLoop]: Abstraction has 1152 states and 4458 transitions. [2022-01-28 14:37:52,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:52,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 4458 transitions. [2022-01-28 14:37:52,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:52,739 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:52,739 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:52,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable581 [2022-01-28 14:37:52,739 INFO L402 AbstractCegarLoop]: === Iteration 583 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:52,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:52,739 INFO L85 PathProgramCache]: Analyzing trace with hash 621881685, now seen corresponding path program 578 times [2022-01-28 14:37:52,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:52,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901278626] [2022-01-28 14:37:52,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:52,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:52,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:52,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:52,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:52,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901278626] [2022-01-28 14:37:52,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901278626] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:52,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:52,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:52,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134117307] [2022-01-28 14:37:52,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:52,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:52,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:52,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:52,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:52,821 INFO L87 Difference]: Start difference. First operand 1152 states and 4458 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:52,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:52,895 INFO L93 Difference]: Finished difference Result 2265 states and 8290 transitions. [2022-01-28 14:37:52,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:52,895 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:52,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:52,900 INFO L225 Difference]: With dead ends: 2265 [2022-01-28 14:37:52,900 INFO L226 Difference]: Without dead ends: 2048 [2022-01-28 14:37:52,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:52,900 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 106 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:52,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 145 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:52,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2048 states. [2022-01-28 14:37:52,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2048 to 1122. [2022-01-28 14:37:52,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 1121 states have (on average 3.8813559322033897) internal successors, (4351), 1121 states have internal predecessors, (4351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:52,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 4351 transitions. [2022-01-28 14:37:52,919 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 4351 transitions. Word has length 25 [2022-01-28 14:37:52,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:52,919 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 4351 transitions. [2022-01-28 14:37:52,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:52,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 4351 transitions. [2022-01-28 14:37:52,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:52,921 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:52,921 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:52,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable582 [2022-01-28 14:37:52,921 INFO L402 AbstractCegarLoop]: === Iteration 584 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:52,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:52,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1818421717, now seen corresponding path program 579 times [2022-01-28 14:37:52,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:52,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855650643] [2022-01-28 14:37:52,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:52,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:52,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:52,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:52,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:52,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855650643] [2022-01-28 14:37:52,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855650643] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:52,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:52,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:52,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248496708] [2022-01-28 14:37:52,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:52,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:52,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:52,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:52,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:52,994 INFO L87 Difference]: Start difference. First operand 1122 states and 4351 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:53,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:53,062 INFO L93 Difference]: Finished difference Result 2261 states and 8292 transitions. [2022-01-28 14:37:53,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:53,063 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:53,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:53,068 INFO L225 Difference]: With dead ends: 2261 [2022-01-28 14:37:53,068 INFO L226 Difference]: Without dead ends: 2072 [2022-01-28 14:37:53,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:53,068 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 94 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:53,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 146 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:53,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2072 states. [2022-01-28 14:37:53,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2072 to 1150. [2022-01-28 14:37:53,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 1149 states have (on average 3.8633594429939078) internal successors, (4439), 1149 states have internal predecessors, (4439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:53,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 4439 transitions. [2022-01-28 14:37:53,091 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 4439 transitions. Word has length 25 [2022-01-28 14:37:53,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:53,091 INFO L470 AbstractCegarLoop]: Abstraction has 1150 states and 4439 transitions. [2022-01-28 14:37:53,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:53,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 4439 transitions. [2022-01-28 14:37:53,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:53,093 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:53,093 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:53,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable583 [2022-01-28 14:37:53,093 INFO L402 AbstractCegarLoop]: === Iteration 585 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:53,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:53,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1284079147, now seen corresponding path program 580 times [2022-01-28 14:37:53,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:53,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161932897] [2022-01-28 14:37:53,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:53,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:53,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:53,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:53,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:53,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161932897] [2022-01-28 14:37:53,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161932897] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:53,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:53,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:53,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736342218] [2022-01-28 14:37:53,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:53,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:53,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:53,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:53,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:53,169 INFO L87 Difference]: Start difference. First operand 1150 states and 4439 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:53,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:53,236 INFO L93 Difference]: Finished difference Result 2255 states and 8247 transitions. [2022-01-28 14:37:53,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:53,236 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:53,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:53,241 INFO L225 Difference]: With dead ends: 2255 [2022-01-28 14:37:53,241 INFO L226 Difference]: Without dead ends: 2044 [2022-01-28 14:37:53,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:53,241 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 112 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:53,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 126 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:53,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2044 states. [2022-01-28 14:37:53,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2044 to 1122. [2022-01-28 14:37:53,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 1121 states have (on average 3.8688670829616414) internal successors, (4337), 1121 states have internal predecessors, (4337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:53,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 4337 transitions. [2022-01-28 14:37:53,263 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 4337 transitions. Word has length 25 [2022-01-28 14:37:53,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:53,263 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 4337 transitions. [2022-01-28 14:37:53,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:53,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 4337 transitions. [2022-01-28 14:37:53,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:53,264 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:53,264 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:53,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable584 [2022-01-28 14:37:53,265 INFO L402 AbstractCegarLoop]: === Iteration 586 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:53,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:53,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1494197965, now seen corresponding path program 581 times [2022-01-28 14:37:53,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:53,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841955025] [2022-01-28 14:37:53,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:53,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:53,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:53,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:53,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:53,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841955025] [2022-01-28 14:37:53,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841955025] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:53,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:53,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:53,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106130810] [2022-01-28 14:37:53,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:53,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:53,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:53,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:53,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:53,343 INFO L87 Difference]: Start difference. First operand 1122 states and 4337 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:53,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:53,406 INFO L93 Difference]: Finished difference Result 2257 states and 8268 transitions. [2022-01-28 14:37:53,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:53,407 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:53,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:53,411 INFO L225 Difference]: With dead ends: 2257 [2022-01-28 14:37:53,411 INFO L226 Difference]: Without dead ends: 2070 [2022-01-28 14:37:53,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:53,411 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 117 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:53,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 125 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:53,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2070 states. [2022-01-28 14:37:53,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2070 to 1150. [2022-01-28 14:37:53,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 1149 states have (on average 3.8511749347258486) internal successors, (4425), 1149 states have internal predecessors, (4425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:53,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 4425 transitions. [2022-01-28 14:37:53,430 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 4425 transitions. Word has length 25 [2022-01-28 14:37:53,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:53,430 INFO L470 AbstractCegarLoop]: Abstraction has 1150 states and 4425 transitions. [2022-01-28 14:37:53,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:53,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 4425 transitions. [2022-01-28 14:37:53,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:53,432 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:53,432 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:53,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable585 [2022-01-28 14:37:53,432 INFO L402 AbstractCegarLoop]: === Iteration 587 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:53,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:53,433 INFO L85 PathProgramCache]: Analyzing trace with hash -413135339, now seen corresponding path program 582 times [2022-01-28 14:37:53,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:53,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635996425] [2022-01-28 14:37:53,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:53,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:53,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:53,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:53,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:53,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635996425] [2022-01-28 14:37:53,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635996425] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:53,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:53,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:53,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751043400] [2022-01-28 14:37:53,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:53,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:53,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:53,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:53,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:53,513 INFO L87 Difference]: Start difference. First operand 1150 states and 4425 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:53,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:53,600 INFO L93 Difference]: Finished difference Result 2253 states and 8228 transitions. [2022-01-28 14:37:53,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:53,601 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:53,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:53,605 INFO L225 Difference]: With dead ends: 2253 [2022-01-28 14:37:53,605 INFO L226 Difference]: Without dead ends: 2028 [2022-01-28 14:37:53,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:53,605 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 88 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:53,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 152 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:53,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2028 states. [2022-01-28 14:37:53,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2028 to 1108. [2022-01-28 14:37:53,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1108 states, 1107 states have (on average 3.878952122854562) internal successors, (4294), 1107 states have internal predecessors, (4294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:53,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 4294 transitions. [2022-01-28 14:37:53,643 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 4294 transitions. Word has length 25 [2022-01-28 14:37:53,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:53,643 INFO L470 AbstractCegarLoop]: Abstraction has 1108 states and 4294 transitions. [2022-01-28 14:37:53,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:53,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 4294 transitions. [2022-01-28 14:37:53,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:53,645 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:53,645 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:53,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable586 [2022-01-28 14:37:53,645 INFO L402 AbstractCegarLoop]: === Iteration 588 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:53,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:53,645 INFO L85 PathProgramCache]: Analyzing trace with hash 642157141, now seen corresponding path program 583 times [2022-01-28 14:37:53,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:53,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371718008] [2022-01-28 14:37:53,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:53,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:53,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:53,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:53,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:53,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371718008] [2022-01-28 14:37:53,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371718008] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:53,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:53,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:53,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417635074] [2022-01-28 14:37:53,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:53,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:53,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:53,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:53,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:53,741 INFO L87 Difference]: Start difference. First operand 1108 states and 4294 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:53,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:53,835 INFO L93 Difference]: Finished difference Result 2223 states and 8131 transitions. [2022-01-28 14:37:53,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:53,835 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:53,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:53,839 INFO L225 Difference]: With dead ends: 2223 [2022-01-28 14:37:53,839 INFO L226 Difference]: Without dead ends: 2034 [2022-01-28 14:37:53,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:53,839 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 111 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:53,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 134 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:53,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2034 states. [2022-01-28 14:37:53,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2034 to 1150. [2022-01-28 14:37:53,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 1149 states have (on average 3.866840731070496) internal successors, (4443), 1149 states have internal predecessors, (4443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:53,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 4443 transitions. [2022-01-28 14:37:53,857 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 4443 transitions. Word has length 25 [2022-01-28 14:37:53,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:53,857 INFO L470 AbstractCegarLoop]: Abstraction has 1150 states and 4443 transitions. [2022-01-28 14:37:53,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:53,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 4443 transitions. [2022-01-28 14:37:53,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:53,859 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:53,859 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:53,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable587 [2022-01-28 14:37:53,859 INFO L402 AbstractCegarLoop]: === Iteration 589 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:53,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:53,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1401179853, now seen corresponding path program 584 times [2022-01-28 14:37:53,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:53,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343851194] [2022-01-28 14:37:53,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:53,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:53,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:53,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:53,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:53,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343851194] [2022-01-28 14:37:53,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343851194] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:53,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:53,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:53,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520688412] [2022-01-28 14:37:53,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:53,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:53,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:53,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:53,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:53,974 INFO L87 Difference]: Start difference. First operand 1150 states and 4443 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:54,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:54,074 INFO L93 Difference]: Finished difference Result 2221 states and 8096 transitions. [2022-01-28 14:37:54,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:54,074 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:54,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:54,078 INFO L225 Difference]: With dead ends: 2221 [2022-01-28 14:37:54,078 INFO L226 Difference]: Without dead ends: 2004 [2022-01-28 14:37:54,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:54,078 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 97 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:54,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 139 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:54,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2004 states. [2022-01-28 14:37:54,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2004 to 1120. [2022-01-28 14:37:54,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 1119 states have (on average 3.876675603217158) internal successors, (4338), 1119 states have internal predecessors, (4338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:54,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 4338 transitions. [2022-01-28 14:37:54,097 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 4338 transitions. Word has length 25 [2022-01-28 14:37:54,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:54,097 INFO L470 AbstractCegarLoop]: Abstraction has 1120 states and 4338 transitions. [2022-01-28 14:37:54,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:54,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 4338 transitions. [2022-01-28 14:37:54,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:54,098 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:54,098 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:54,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable588 [2022-01-28 14:37:54,098 INFO L402 AbstractCegarLoop]: === Iteration 590 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:54,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:54,099 INFO L85 PathProgramCache]: Analyzing trace with hash -153869739, now seen corresponding path program 585 times [2022-01-28 14:37:54,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:54,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103801788] [2022-01-28 14:37:54,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:54,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:54,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:54,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:54,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:54,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103801788] [2022-01-28 14:37:54,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103801788] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:54,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:54,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:54,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39584164] [2022-01-28 14:37:54,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:54,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:54,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:54,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:54,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:54,216 INFO L87 Difference]: Start difference. First operand 1120 states and 4338 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:54,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:54,296 INFO L93 Difference]: Finished difference Result 2143 states and 7835 transitions. [2022-01-28 14:37:54,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:54,296 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:54,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:54,300 INFO L225 Difference]: With dead ends: 2143 [2022-01-28 14:37:54,300 INFO L226 Difference]: Without dead ends: 1954 [2022-01-28 14:37:54,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:54,300 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 121 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:54,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 131 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:54,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2022-01-28 14:37:54,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1144. [2022-01-28 14:37:54,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1144 states, 1143 states have (on average 3.8617672790901136) internal successors, (4414), 1143 states have internal predecessors, (4414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:54,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 4414 transitions. [2022-01-28 14:37:54,319 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 4414 transitions. Word has length 25 [2022-01-28 14:37:54,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:54,319 INFO L470 AbstractCegarLoop]: Abstraction has 1144 states and 4414 transitions. [2022-01-28 14:37:54,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:54,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 4414 transitions. [2022-01-28 14:37:54,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:54,320 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:54,320 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:54,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable589 [2022-01-28 14:37:54,320 INFO L402 AbstractCegarLoop]: === Iteration 591 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:54,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:54,321 INFO L85 PathProgramCache]: Analyzing trace with hash 401918549, now seen corresponding path program 586 times [2022-01-28 14:37:54,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:54,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627460993] [2022-01-28 14:37:54,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:54,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:54,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:54,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:54,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:54,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627460993] [2022-01-28 14:37:54,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627460993] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:54,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:54,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:54,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156840056] [2022-01-28 14:37:54,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:54,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:54,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:54,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:54,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:54,403 INFO L87 Difference]: Start difference. First operand 1144 states and 4414 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:54,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:54,484 INFO L93 Difference]: Finished difference Result 2001 states and 7381 transitions. [2022-01-28 14:37:54,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:54,486 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:54,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:54,490 INFO L225 Difference]: With dead ends: 2001 [2022-01-28 14:37:54,490 INFO L226 Difference]: Without dead ends: 1802 [2022-01-28 14:37:54,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:54,490 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 91 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:54,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 148 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:54,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1802 states. [2022-01-28 14:37:54,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1802 to 1120. [2022-01-28 14:37:54,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 1119 states have (on average 3.8659517426273458) internal successors, (4326), 1119 states have internal predecessors, (4326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:54,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 4326 transitions. [2022-01-28 14:37:54,507 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 4326 transitions. Word has length 25 [2022-01-28 14:37:54,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:54,507 INFO L470 AbstractCegarLoop]: Abstraction has 1120 states and 4326 transitions. [2022-01-28 14:37:54,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:54,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 4326 transitions. [2022-01-28 14:37:54,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:54,509 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:54,509 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:54,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable590 [2022-01-28 14:37:54,509 INFO L402 AbstractCegarLoop]: === Iteration 592 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:54,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:54,509 INFO L85 PathProgramCache]: Analyzing trace with hash 828477875, now seen corresponding path program 587 times [2022-01-28 14:37:54,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:54,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054431216] [2022-01-28 14:37:54,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:54,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:54,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:54,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:54,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:54,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054431216] [2022-01-28 14:37:54,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054431216] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:54,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:54,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:54,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201247381] [2022-01-28 14:37:54,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:54,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:54,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:54,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:54,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:54,622 INFO L87 Difference]: Start difference. First operand 1120 states and 4326 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:54,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:54,708 INFO L93 Difference]: Finished difference Result 2141 states and 7818 transitions. [2022-01-28 14:37:54,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:54,709 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:54,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:54,712 INFO L225 Difference]: With dead ends: 2141 [2022-01-28 14:37:54,713 INFO L226 Difference]: Without dead ends: 1954 [2022-01-28 14:37:54,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:54,713 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 103 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:54,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 134 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:54,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2022-01-28 14:37:54,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1144. [2022-01-28 14:37:54,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1144 states, 1143 states have (on average 3.851268591426072) internal successors, (4402), 1143 states have internal predecessors, (4402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:54,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 4402 transitions. [2022-01-28 14:37:54,731 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 4402 transitions. Word has length 25 [2022-01-28 14:37:54,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:54,731 INFO L470 AbstractCegarLoop]: Abstraction has 1144 states and 4402 transitions. [2022-01-28 14:37:54,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:54,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 4402 transitions. [2022-01-28 14:37:54,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:54,732 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:54,732 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:54,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable591 [2022-01-28 14:37:54,733 INFO L402 AbstractCegarLoop]: === Iteration 593 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:54,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:54,733 INFO L85 PathProgramCache]: Analyzing trace with hash 621669909, now seen corresponding path program 588 times [2022-01-28 14:37:54,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:54,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426026778] [2022-01-28 14:37:54,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:54,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:54,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:54,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:54,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:54,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426026778] [2022-01-28 14:37:54,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426026778] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:54,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:54,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:54,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828828479] [2022-01-28 14:37:54,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:54,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:54,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:54,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:54,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:54,835 INFO L87 Difference]: Start difference. First operand 1144 states and 4402 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:54,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:54,931 INFO L93 Difference]: Finished difference Result 2001 states and 7369 transitions. [2022-01-28 14:37:54,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:54,931 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:54,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:54,935 INFO L225 Difference]: With dead ends: 2001 [2022-01-28 14:37:54,935 INFO L226 Difference]: Without dead ends: 1790 [2022-01-28 14:37:54,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:54,936 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 89 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:54,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 136 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:54,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1790 states. [2022-01-28 14:37:54,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1790 to 1108. [2022-01-28 14:37:54,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1108 states, 1107 states have (on average 3.8735320686540198) internal successors, (4288), 1107 states have internal predecessors, (4288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:54,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 4288 transitions. [2022-01-28 14:37:54,957 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 4288 transitions. Word has length 25 [2022-01-28 14:37:54,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:54,957 INFO L470 AbstractCegarLoop]: Abstraction has 1108 states and 4288 transitions. [2022-01-28 14:37:54,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:54,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 4288 transitions. [2022-01-28 14:37:54,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:54,959 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:54,959 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:54,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable592 [2022-01-28 14:37:54,960 INFO L402 AbstractCegarLoop]: === Iteration 594 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:54,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:54,960 INFO L85 PathProgramCache]: Analyzing trace with hash -214590925, now seen corresponding path program 589 times [2022-01-28 14:37:54,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:54,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383786950] [2022-01-28 14:37:54,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:54,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:55,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:55,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:55,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383786950] [2022-01-28 14:37:55,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383786950] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:55,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:55,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:55,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314432392] [2022-01-28 14:37:55,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:55,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:55,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:55,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:55,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:55,099 INFO L87 Difference]: Start difference. First operand 1108 states and 4288 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:55,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:55,199 INFO L93 Difference]: Finished difference Result 2115 states and 7713 transitions. [2022-01-28 14:37:55,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:55,199 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:55,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:55,203 INFO L225 Difference]: With dead ends: 2115 [2022-01-28 14:37:55,203 INFO L226 Difference]: Without dead ends: 1926 [2022-01-28 14:37:55,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:55,204 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 119 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:55,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 125 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:55,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1926 states. [2022-01-28 14:37:55,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1926 to 1148. [2022-01-28 14:37:55,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1148 states, 1147 states have (on average 3.8639930252833476) internal successors, (4432), 1147 states have internal predecessors, (4432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:55,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 4432 transitions. [2022-01-28 14:37:55,222 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 4432 transitions. Word has length 25 [2022-01-28 14:37:55,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:55,222 INFO L470 AbstractCegarLoop]: Abstraction has 1148 states and 4432 transitions. [2022-01-28 14:37:55,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:55,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 4432 transitions. [2022-01-28 14:37:55,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:55,224 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:55,224 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:55,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable593 [2022-01-28 14:37:55,224 INFO L402 AbstractCegarLoop]: === Iteration 595 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:55,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:55,224 INFO L85 PathProgramCache]: Analyzing trace with hash 977875507, now seen corresponding path program 590 times [2022-01-28 14:37:55,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:55,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907153320] [2022-01-28 14:37:55,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:55,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:55,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:55,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:55,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:55,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907153320] [2022-01-28 14:37:55,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907153320] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:55,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:55,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:55,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798254474] [2022-01-28 14:37:55,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:55,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:55,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:55,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:55,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:55,345 INFO L87 Difference]: Start difference. First operand 1148 states and 4432 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:55,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:55,460 INFO L93 Difference]: Finished difference Result 2109 states and 7668 transitions. [2022-01-28 14:37:55,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:55,460 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:55,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:55,464 INFO L225 Difference]: With dead ends: 2109 [2022-01-28 14:37:55,464 INFO L226 Difference]: Without dead ends: 1898 [2022-01-28 14:37:55,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:55,464 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 119 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:55,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 127 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:55,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1898 states. [2022-01-28 14:37:55,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1898 to 1120. [2022-01-28 14:37:55,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 1119 states have (on average 3.871313672922252) internal successors, (4332), 1119 states have internal predecessors, (4332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:55,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 4332 transitions. [2022-01-28 14:37:55,482 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 4332 transitions. Word has length 25 [2022-01-28 14:37:55,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:55,482 INFO L470 AbstractCegarLoop]: Abstraction has 1120 states and 4332 transitions. [2022-01-28 14:37:55,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:55,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 4332 transitions. [2022-01-28 14:37:55,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:55,483 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:55,483 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:55,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable594 [2022-01-28 14:37:55,484 INFO L402 AbstractCegarLoop]: === Iteration 596 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:55,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:55,484 INFO L85 PathProgramCache]: Analyzing trace with hash -695492971, now seen corresponding path program 591 times [2022-01-28 14:37:55,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:55,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911618219] [2022-01-28 14:37:55,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:55,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:55,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:55,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:55,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911618219] [2022-01-28 14:37:55,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911618219] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:55,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:55,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:55,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684552025] [2022-01-28 14:37:55,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:55,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:55,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:55,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:55,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:55,562 INFO L87 Difference]: Start difference. First operand 1120 states and 4332 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:55,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:55,638 INFO L93 Difference]: Finished difference Result 2017 states and 7336 transitions. [2022-01-28 14:37:55,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:55,638 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:55,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:55,642 INFO L225 Difference]: With dead ends: 2017 [2022-01-28 14:37:55,642 INFO L226 Difference]: Without dead ends: 1828 [2022-01-28 14:37:55,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:55,642 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 98 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:55,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 148 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:55,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1828 states. [2022-01-28 14:37:55,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1828 to 1144. [2022-01-28 14:37:55,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1144 states, 1143 states have (on average 3.856517935258093) internal successors, (4408), 1143 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:55,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 4408 transitions. [2022-01-28 14:37:55,660 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 4408 transitions. Word has length 25 [2022-01-28 14:37:55,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:55,660 INFO L470 AbstractCegarLoop]: Abstraction has 1144 states and 4408 transitions. [2022-01-28 14:37:55,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:55,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 4408 transitions. [2022-01-28 14:37:55,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:55,662 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:55,662 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:55,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable595 [2022-01-28 14:37:55,662 INFO L402 AbstractCegarLoop]: === Iteration 597 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:55,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:55,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1621142989, now seen corresponding path program 592 times [2022-01-28 14:37:55,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:55,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781548938] [2022-01-28 14:37:55,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:55,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:55,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:55,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:55,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781548938] [2022-01-28 14:37:55,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781548938] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:55,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:55,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:55,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611220957] [2022-01-28 14:37:55,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:55,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:55,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:55,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:55,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:55,753 INFO L87 Difference]: Start difference. First operand 1144 states and 4408 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:55,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:55,824 INFO L93 Difference]: Finished difference Result 1875 states and 6882 transitions. [2022-01-28 14:37:55,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:55,824 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:55,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:55,827 INFO L225 Difference]: With dead ends: 1875 [2022-01-28 14:37:55,827 INFO L226 Difference]: Without dead ends: 1676 [2022-01-28 14:37:55,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:55,827 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 90 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:55,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 146 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:55,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2022-01-28 14:37:55,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1120. [2022-01-28 14:37:55,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 1119 states have (on average 3.8605898123324396) internal successors, (4320), 1119 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:55,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 4320 transitions. [2022-01-28 14:37:55,844 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 4320 transitions. Word has length 25 [2022-01-28 14:37:55,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:55,845 INFO L470 AbstractCegarLoop]: Abstraction has 1120 states and 4320 transitions. [2022-01-28 14:37:55,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:55,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 4320 transitions. [2022-01-28 14:37:55,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:55,846 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:55,846 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:55,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable596 [2022-01-28 14:37:55,846 INFO L402 AbstractCegarLoop]: === Iteration 598 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:55,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:55,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1780491725, now seen corresponding path program 593 times [2022-01-28 14:37:55,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:55,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360496129] [2022-01-28 14:37:55,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:55,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:55,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:55,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:55,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:55,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360496129] [2022-01-28 14:37:55,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360496129] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:55,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:55,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:55,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172004282] [2022-01-28 14:37:55,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:55,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:55,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:55,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:55,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:55,932 INFO L87 Difference]: Start difference. First operand 1120 states and 4320 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:56,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:56,037 INFO L93 Difference]: Finished difference Result 1883 states and 6922 transitions. [2022-01-28 14:37:56,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:56,037 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:56,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:56,040 INFO L225 Difference]: With dead ends: 1883 [2022-01-28 14:37:56,040 INFO L226 Difference]: Without dead ends: 1700 [2022-01-28 14:37:56,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:56,041 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 90 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:56,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 145 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:56,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1700 states. [2022-01-28 14:37:56,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1700 to 1144. [2022-01-28 14:37:56,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1144 states, 1143 states have (on average 3.8460192475940507) internal successors, (4396), 1143 states have internal predecessors, (4396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:56,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 4396 transitions. [2022-01-28 14:37:56,057 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 4396 transitions. Word has length 25 [2022-01-28 14:37:56,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:56,057 INFO L470 AbstractCegarLoop]: Abstraction has 1144 states and 4396 transitions. [2022-01-28 14:37:56,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:56,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 4396 transitions. [2022-01-28 14:37:56,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:56,059 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:56,059 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:56,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable597 [2022-01-28 14:37:56,059 INFO L402 AbstractCegarLoop]: === Iteration 599 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:56,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:56,059 INFO L85 PathProgramCache]: Analyzing trace with hash -699429099, now seen corresponding path program 594 times [2022-01-28 14:37:56,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:56,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263500888] [2022-01-28 14:37:56,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:56,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:56,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:56,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:56,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:56,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263500888] [2022-01-28 14:37:56,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263500888] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:56,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:56,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:56,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936481033] [2022-01-28 14:37:56,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:56,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:56,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:56,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:56,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:56,169 INFO L87 Difference]: Start difference. First operand 1144 states and 4396 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:56,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:56,265 INFO L93 Difference]: Finished difference Result 1699 states and 6309 transitions. [2022-01-28 14:37:56,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:56,265 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:56,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:56,268 INFO L225 Difference]: With dead ends: 1699 [2022-01-28 14:37:56,268 INFO L226 Difference]: Without dead ends: 1488 [2022-01-28 14:37:56,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:56,269 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 81 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:56,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 138 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:56,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1488 states. [2022-01-28 14:37:56,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1488 to 1108. [2022-01-28 14:37:56,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1108 states, 1107 states have (on average 3.868112014453478) internal successors, (4282), 1107 states have internal predecessors, (4282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:56,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 4282 transitions. [2022-01-28 14:37:56,284 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 4282 transitions. Word has length 25 [2022-01-28 14:37:56,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:56,284 INFO L470 AbstractCegarLoop]: Abstraction has 1108 states and 4282 transitions. [2022-01-28 14:37:56,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:56,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 4282 transitions. [2022-01-28 14:37:56,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:56,286 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:56,286 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:56,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable598 [2022-01-28 14:37:56,286 INFO L402 AbstractCegarLoop]: === Iteration 600 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:56,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:56,286 INFO L85 PathProgramCache]: Analyzing trace with hash 757805585, now seen corresponding path program 595 times [2022-01-28 14:37:56,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:56,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660460748] [2022-01-28 14:37:56,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:56,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:56,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:56,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:56,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:56,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660460748] [2022-01-28 14:37:56,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660460748] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:56,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:56,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:56,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878619621] [2022-01-28 14:37:56,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:56,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:56,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:56,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:56,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:56,403 INFO L87 Difference]: Start difference. First operand 1108 states and 4282 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:56,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:56,496 INFO L93 Difference]: Finished difference Result 1803 states and 6620 transitions. [2022-01-28 14:37:56,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:56,496 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:56,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:56,499 INFO L225 Difference]: With dead ends: 1803 [2022-01-28 14:37:56,500 INFO L226 Difference]: Without dead ends: 1616 [2022-01-28 14:37:56,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:56,500 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 101 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:56,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 127 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:56,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1616 states. [2022-01-28 14:37:56,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1616 to 1148. [2022-01-28 14:37:56,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1148 states, 1147 states have (on average 3.858761987794246) internal successors, (4426), 1147 states have internal predecessors, (4426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:56,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 4426 transitions. [2022-01-28 14:37:56,517 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 4426 transitions. Word has length 25 [2022-01-28 14:37:56,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:56,517 INFO L470 AbstractCegarLoop]: Abstraction has 1148 states and 4426 transitions. [2022-01-28 14:37:56,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:56,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 4426 transitions. [2022-01-28 14:37:56,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:56,519 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:56,519 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:56,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable599 [2022-01-28 14:37:56,519 INFO L402 AbstractCegarLoop]: === Iteration 601 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:56,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:56,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1838868211, now seen corresponding path program 596 times [2022-01-28 14:37:56,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:56,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432777288] [2022-01-28 14:37:56,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:56,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:56,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:56,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:56,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:56,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432777288] [2022-01-28 14:37:56,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432777288] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:56,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:56,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:56,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291439294] [2022-01-28 14:37:56,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:56,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:56,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:56,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:56,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:56,631 INFO L87 Difference]: Start difference. First operand 1148 states and 4426 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:56,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:56,724 INFO L93 Difference]: Finished difference Result 1799 states and 6580 transitions. [2022-01-28 14:37:56,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:56,725 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:56,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:56,728 INFO L225 Difference]: With dead ends: 1799 [2022-01-28 14:37:56,728 INFO L226 Difference]: Without dead ends: 1588 [2022-01-28 14:37:56,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:56,728 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 91 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:56,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 127 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:56,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1588 states. [2022-01-28 14:37:56,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1588 to 1120. [2022-01-28 14:37:56,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 1119 states have (on average 3.8659517426273458) internal successors, (4326), 1119 states have internal predecessors, (4326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:56,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 4326 transitions. [2022-01-28 14:37:56,745 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 4326 transitions. Word has length 25 [2022-01-28 14:37:56,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:56,745 INFO L470 AbstractCegarLoop]: Abstraction has 1120 states and 4326 transitions. [2022-01-28 14:37:56,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:56,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 4326 transitions. [2022-01-28 14:37:56,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:56,746 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:56,746 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:56,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable600 [2022-01-28 14:37:56,746 INFO L402 AbstractCegarLoop]: === Iteration 602 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:56,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:56,747 INFO L85 PathProgramCache]: Analyzing trace with hash 276903539, now seen corresponding path program 597 times [2022-01-28 14:37:56,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:56,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087827132] [2022-01-28 14:37:56,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:56,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:56,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:56,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:56,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087827132] [2022-01-28 14:37:56,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087827132] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:56,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:56,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:56,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442986447] [2022-01-28 14:37:56,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:56,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:56,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:56,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:56,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:56,864 INFO L87 Difference]: Start difference. First operand 1120 states and 4326 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:56,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:56,955 INFO L93 Difference]: Finished difference Result 1715 states and 6276 transitions. [2022-01-28 14:37:56,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:56,956 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:56,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:56,959 INFO L225 Difference]: With dead ends: 1715 [2022-01-28 14:37:56,959 INFO L226 Difference]: Without dead ends: 1528 [2022-01-28 14:37:56,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:56,959 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 86 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:56,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 131 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:56,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2022-01-28 14:37:56,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1144. [2022-01-28 14:37:56,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1144 states, 1143 states have (on average 3.851268591426072) internal successors, (4402), 1143 states have internal predecessors, (4402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:56,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 4402 transitions. [2022-01-28 14:37:56,975 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 4402 transitions. Word has length 25 [2022-01-28 14:37:56,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:56,975 INFO L470 AbstractCegarLoop]: Abstraction has 1144 states and 4402 transitions. [2022-01-28 14:37:56,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:56,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 4402 transitions. [2022-01-28 14:37:56,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:56,977 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:56,977 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:56,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable601 [2022-01-28 14:37:56,977 INFO L402 AbstractCegarLoop]: === Iteration 603 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:56,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:56,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1411342733, now seen corresponding path program 598 times [2022-01-28 14:37:56,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:56,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371332997] [2022-01-28 14:37:56,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:56,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:56,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:57,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:57,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:57,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371332997] [2022-01-28 14:37:57,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371332997] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:57,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:57,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:57,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910875090] [2022-01-28 14:37:57,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:57,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:57,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:57,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:57,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:57,097 INFO L87 Difference]: Start difference. First operand 1144 states and 4402 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:57,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:57,205 INFO L93 Difference]: Finished difference Result 1575 states and 5827 transitions. [2022-01-28 14:37:57,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:57,205 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:57,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:57,208 INFO L225 Difference]: With dead ends: 1575 [2022-01-28 14:37:57,208 INFO L226 Difference]: Without dead ends: 1376 [2022-01-28 14:37:57,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:57,208 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 87 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:57,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 117 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:57,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2022-01-28 14:37:57,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1120. [2022-01-28 14:37:57,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 1119 states have (on average 3.8552278820375334) internal successors, (4314), 1119 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:57,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 4314 transitions. [2022-01-28 14:37:57,223 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 4314 transitions. Word has length 25 [2022-01-28 14:37:57,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:57,223 INFO L470 AbstractCegarLoop]: Abstraction has 1120 states and 4314 transitions. [2022-01-28 14:37:57,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:57,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 4314 transitions. [2022-01-28 14:37:57,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:57,225 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:57,225 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:57,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable602 [2022-01-28 14:37:57,225 INFO L402 AbstractCegarLoop]: === Iteration 604 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:57,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:57,225 INFO L85 PathProgramCache]: Analyzing trace with hash 664908501, now seen corresponding path program 599 times [2022-01-28 14:37:57,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:57,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066514108] [2022-01-28 14:37:57,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:57,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:57,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:57,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:57,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:57,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066514108] [2022-01-28 14:37:57,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066514108] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:57,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:57,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:57,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428932678] [2022-01-28 14:37:57,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:57,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:57,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:57,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:57,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:57,346 INFO L87 Difference]: Start difference. First operand 1120 states and 4314 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:57,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:57,426 INFO L93 Difference]: Finished difference Result 1503 states and 5563 transitions. [2022-01-28 14:37:57,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:57,426 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:57,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:57,429 INFO L225 Difference]: With dead ends: 1503 [2022-01-28 14:37:57,429 INFO L226 Difference]: Without dead ends: 1320 [2022-01-28 14:37:57,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:57,429 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 89 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:57,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 109 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:57,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2022-01-28 14:37:57,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1144. [2022-01-28 14:37:57,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1144 states, 1143 states have (on average 3.8407699037620295) internal successors, (4390), 1143 states have internal predecessors, (4390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:57,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 4390 transitions. [2022-01-28 14:37:57,444 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 4390 transitions. Word has length 25 [2022-01-28 14:37:57,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:57,444 INFO L470 AbstractCegarLoop]: Abstraction has 1144 states and 4390 transitions. [2022-01-28 14:37:57,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:57,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 4390 transitions. [2022-01-28 14:37:57,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:57,445 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:57,445 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:57,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable603 [2022-01-28 14:37:57,445 INFO L402 AbstractCegarLoop]: === Iteration 605 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:57,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:57,446 INFO L85 PathProgramCache]: Analyzing trace with hash -181888461, now seen corresponding path program 600 times [2022-01-28 14:37:57,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:57,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189492085] [2022-01-28 14:37:57,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:57,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:57,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:57,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:57,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:57,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189492085] [2022-01-28 14:37:57,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189492085] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:57,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:57,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:57,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964512162] [2022-01-28 14:37:57,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:57,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:57,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:57,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:57,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:57,561 INFO L87 Difference]: Start difference. First operand 1144 states and 4390 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:57,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:57,635 INFO L93 Difference]: Finished difference Result 1319 states and 4950 transitions. [2022-01-28 14:37:57,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:57,635 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:57,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:57,638 INFO L225 Difference]: With dead ends: 1319 [2022-01-28 14:37:57,638 INFO L226 Difference]: Without dead ends: 1100 [2022-01-28 14:37:57,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:57,638 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 76 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:57,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 104 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:57,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2022-01-28 14:37:57,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 1100. [2022-01-28 14:37:57,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 1099 states have (on average 3.880800727934486) internal successors, (4265), 1099 states have internal predecessors, (4265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:57,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 4265 transitions. [2022-01-28 14:37:57,652 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 4265 transitions. Word has length 25 [2022-01-28 14:37:57,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:57,652 INFO L470 AbstractCegarLoop]: Abstraction has 1100 states and 4265 transitions. [2022-01-28 14:37:57,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:57,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 4265 transitions. [2022-01-28 14:37:57,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:57,653 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:57,653 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:57,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable604 [2022-01-28 14:37:57,653 INFO L402 AbstractCegarLoop]: === Iteration 606 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:57,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:57,654 INFO L85 PathProgramCache]: Analyzing trace with hash 821229273, now seen corresponding path program 601 times [2022-01-28 14:37:57,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:57,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96889676] [2022-01-28 14:37:57,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:57,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:57,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:57,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:57,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96889676] [2022-01-28 14:37:57,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96889676] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:57,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:57,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:57,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082938866] [2022-01-28 14:37:57,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:57,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:57,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:57,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:57,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:57,735 INFO L87 Difference]: Start difference. First operand 1100 states and 4265 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:57,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:57,812 INFO L93 Difference]: Finished difference Result 2103 states and 7646 transitions. [2022-01-28 14:37:57,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:57,812 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:57,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:57,815 INFO L225 Difference]: With dead ends: 2103 [2022-01-28 14:37:57,815 INFO L226 Difference]: Without dead ends: 1914 [2022-01-28 14:37:57,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:57,816 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 117 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:57,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 112 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:57,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1914 states. [2022-01-28 14:37:57,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1914 to 1144. [2022-01-28 14:37:57,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1144 states, 1143 states have (on average 3.869641294838145) internal successors, (4423), 1143 states have internal predecessors, (4423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:57,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 4423 transitions. [2022-01-28 14:37:57,833 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 4423 transitions. Word has length 25 [2022-01-28 14:37:57,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:57,833 INFO L470 AbstractCegarLoop]: Abstraction has 1144 states and 4423 transitions. [2022-01-28 14:37:57,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:57,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 4423 transitions. [2022-01-28 14:37:57,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:57,834 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:57,835 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:57,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable605 [2022-01-28 14:37:57,835 INFO L402 AbstractCegarLoop]: === Iteration 607 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:57,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:57,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1222107721, now seen corresponding path program 602 times [2022-01-28 14:37:57,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:57,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160953620] [2022-01-28 14:37:57,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:57,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:57,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:57,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:57,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:57,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160953620] [2022-01-28 14:37:57,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160953620] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:57,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:57,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:57,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397194496] [2022-01-28 14:37:57,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:57,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:57,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:57,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:57,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:57,924 INFO L87 Difference]: Start difference. First operand 1144 states and 4423 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:58,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:58,004 INFO L93 Difference]: Finished difference Result 2101 states and 7611 transitions. [2022-01-28 14:37:58,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:58,004 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:58,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:58,008 INFO L225 Difference]: With dead ends: 2101 [2022-01-28 14:37:58,008 INFO L226 Difference]: Without dead ends: 1884 [2022-01-28 14:37:58,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:58,008 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 96 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:58,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 131 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:58,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1884 states. [2022-01-28 14:37:58,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1884 to 1114. [2022-01-28 14:37:58,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1114 states, 1113 states have (on average 3.8778077268643307) internal successors, (4316), 1113 states have internal predecessors, (4316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:58,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 4316 transitions. [2022-01-28 14:37:58,026 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 4316 transitions. Word has length 25 [2022-01-28 14:37:58,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:58,026 INFO L470 AbstractCegarLoop]: Abstraction has 1114 states and 4316 transitions. [2022-01-28 14:37:58,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:58,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 4316 transitions. [2022-01-28 14:37:58,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:58,028 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:58,028 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:58,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable606 [2022-01-28 14:37:58,028 INFO L402 AbstractCegarLoop]: === Iteration 608 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:58,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:58,028 INFO L85 PathProgramCache]: Analyzing trace with hash -25567689, now seen corresponding path program 603 times [2022-01-28 14:37:58,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:58,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477466864] [2022-01-28 14:37:58,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:58,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:58,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:58,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:58,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:58,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477466864] [2022-01-28 14:37:58,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477466864] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:58,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:58,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:58,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303354745] [2022-01-28 14:37:58,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:58,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:58,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:58,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:58,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:58,110 INFO L87 Difference]: Start difference. First operand 1114 states and 4316 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:58,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:58,204 INFO L93 Difference]: Finished difference Result 2097 states and 7613 transitions. [2022-01-28 14:37:58,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:58,204 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:58,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:58,209 INFO L225 Difference]: With dead ends: 2097 [2022-01-28 14:37:58,209 INFO L226 Difference]: Without dead ends: 1908 [2022-01-28 14:37:58,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:58,209 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 105 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:58,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 119 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:58,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2022-01-28 14:37:58,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1142. [2022-01-28 14:37:58,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1142 states, 1141 states have (on average 3.85977212971078) internal successors, (4404), 1141 states have internal predecessors, (4404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:58,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 4404 transitions. [2022-01-28 14:37:58,229 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 4404 transitions. Word has length 25 [2022-01-28 14:37:58,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:58,229 INFO L470 AbstractCegarLoop]: Abstraction has 1142 states and 4404 transitions. [2022-01-28 14:37:58,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:58,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 4404 transitions. [2022-01-28 14:37:58,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:58,231 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:58,231 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:58,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable607 [2022-01-28 14:37:58,231 INFO L402 AbstractCegarLoop]: === Iteration 609 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:58,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:58,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1166898743, now seen corresponding path program 604 times [2022-01-28 14:37:58,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:58,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55858066] [2022-01-28 14:37:58,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:58,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:58,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:58,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:58,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:58,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55858066] [2022-01-28 14:37:58,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55858066] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:58,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:58,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:58,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94505078] [2022-01-28 14:37:58,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:58,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:58,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:58,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:58,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:58,353 INFO L87 Difference]: Start difference. First operand 1142 states and 4404 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:58,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:58,464 INFO L93 Difference]: Finished difference Result 2091 states and 7568 transitions. [2022-01-28 14:37:58,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:58,464 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:58,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:58,469 INFO L225 Difference]: With dead ends: 2091 [2022-01-28 14:37:58,470 INFO L226 Difference]: Without dead ends: 1880 [2022-01-28 14:37:58,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:58,470 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 107 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:58,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 130 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:58,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2022-01-28 14:37:58,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1114. [2022-01-28 14:37:58,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1114 states, 1113 states have (on average 3.8652291105121295) internal successors, (4302), 1113 states have internal predecessors, (4302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:58,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 4302 transitions. [2022-01-28 14:37:58,493 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 4302 transitions. Word has length 25 [2022-01-28 14:37:58,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:58,493 INFO L470 AbstractCegarLoop]: Abstraction has 1114 states and 4302 transitions. [2022-01-28 14:37:58,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:58,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 4302 transitions. [2022-01-28 14:37:58,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:58,495 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:58,495 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:58,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable608 [2022-01-28 14:37:58,495 INFO L402 AbstractCegarLoop]: === Iteration 610 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:58,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:58,495 INFO L85 PathProgramCache]: Analyzing trace with hash 956779925, now seen corresponding path program 605 times [2022-01-28 14:37:58,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:58,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735352762] [2022-01-28 14:37:58,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:58,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:58,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:58,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:58,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:58,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735352762] [2022-01-28 14:37:58,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735352762] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:58,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:58,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:58,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386879057] [2022-01-28 14:37:58,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:58,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:58,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:58,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:58,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:58,600 INFO L87 Difference]: Start difference. First operand 1114 states and 4302 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:58,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:58,674 INFO L93 Difference]: Finished difference Result 2093 states and 7589 transitions. [2022-01-28 14:37:58,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:58,674 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:58,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:58,678 INFO L225 Difference]: With dead ends: 2093 [2022-01-28 14:37:58,678 INFO L226 Difference]: Without dead ends: 1906 [2022-01-28 14:37:58,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:58,679 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 103 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:58,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 122 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:58,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1906 states. [2022-01-28 14:37:58,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1906 to 1142. [2022-01-28 14:37:58,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1142 states, 1141 states have (on average 3.847502191060473) internal successors, (4390), 1141 states have internal predecessors, (4390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:58,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 4390 transitions. [2022-01-28 14:37:58,697 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 4390 transitions. Word has length 25 [2022-01-28 14:37:58,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:58,697 INFO L470 AbstractCegarLoop]: Abstraction has 1142 states and 4390 transitions. [2022-01-28 14:37:58,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:58,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 4390 transitions. [2022-01-28 14:37:58,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:58,698 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:58,699 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:58,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable609 [2022-01-28 14:37:58,699 INFO L402 AbstractCegarLoop]: === Iteration 611 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:58,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:58,699 INFO L85 PathProgramCache]: Analyzing trace with hash 2037842551, now seen corresponding path program 606 times [2022-01-28 14:37:58,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:58,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703233760] [2022-01-28 14:37:58,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:58,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:58,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:58,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:58,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:58,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703233760] [2022-01-28 14:37:58,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703233760] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:58,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:58,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:58,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393456909] [2022-01-28 14:37:58,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:58,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:58,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:58,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:58,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:58,781 INFO L87 Difference]: Start difference. First operand 1142 states and 4390 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:58,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:58,870 INFO L93 Difference]: Finished difference Result 2089 states and 7549 transitions. [2022-01-28 14:37:58,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:58,871 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:58,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:58,874 INFO L225 Difference]: With dead ends: 2089 [2022-01-28 14:37:58,874 INFO L226 Difference]: Without dead ends: 1864 [2022-01-28 14:37:58,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:58,875 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 100 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:58,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 118 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:58,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2022-01-28 14:37:58,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1100. [2022-01-28 14:37:58,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 1099 states have (on average 3.875341219290264) internal successors, (4259), 1099 states have internal predecessors, (4259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:58,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 4259 transitions. [2022-01-28 14:37:58,892 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 4259 transitions. Word has length 25 [2022-01-28 14:37:58,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:58,892 INFO L470 AbstractCegarLoop]: Abstraction has 1100 states and 4259 transitions. [2022-01-28 14:37:58,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:58,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 4259 transitions. [2022-01-28 14:37:58,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:58,894 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:58,894 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:58,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable610 [2022-01-28 14:37:58,894 INFO L402 AbstractCegarLoop]: === Iteration 612 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:58,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:58,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1201832265, now seen corresponding path program 607 times [2022-01-28 14:37:58,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:58,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809709876] [2022-01-28 14:37:58,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:58,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:58,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:58,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:58,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:58,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809709876] [2022-01-28 14:37:58,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809709876] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:58,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:58,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:58,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464973270] [2022-01-28 14:37:58,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:58,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:58,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:58,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:58,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:58,968 INFO L87 Difference]: Start difference. First operand 1100 states and 4259 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:59,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:59,048 INFO L93 Difference]: Finished difference Result 2085 states and 7571 transitions. [2022-01-28 14:37:59,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:59,048 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:59,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:59,052 INFO L225 Difference]: With dead ends: 2085 [2022-01-28 14:37:59,052 INFO L226 Difference]: Without dead ends: 1896 [2022-01-28 14:37:59,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:59,054 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 112 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:59,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 123 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:59,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1896 states. [2022-01-28 14:37:59,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1896 to 1142. [2022-01-28 14:37:59,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1142 states, 1141 states have (on average 3.8632778264680105) internal successors, (4408), 1141 states have internal predecessors, (4408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:59,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 4408 transitions. [2022-01-28 14:37:59,071 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 4408 transitions. Word has length 25 [2022-01-28 14:37:59,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:59,071 INFO L470 AbstractCegarLoop]: Abstraction has 1142 states and 4408 transitions. [2022-01-28 14:37:59,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:59,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 4408 transitions. [2022-01-28 14:37:59,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:59,073 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:59,073 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:59,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable611 [2022-01-28 14:37:59,073 INFO L402 AbstractCegarLoop]: === Iteration 613 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:59,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:59,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1049798037, now seen corresponding path program 608 times [2022-01-28 14:37:59,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:59,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978575440] [2022-01-28 14:37:59,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:59,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:59,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:59,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:59,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:59,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978575440] [2022-01-28 14:37:59,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978575440] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:59,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:59,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:59,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782504765] [2022-01-28 14:37:59,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:59,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:59,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:59,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:59,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:59,154 INFO L87 Difference]: Start difference. First operand 1142 states and 4408 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:59,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:59,240 INFO L93 Difference]: Finished difference Result 2083 states and 7536 transitions. [2022-01-28 14:37:59,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:59,240 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:59,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:59,244 INFO L225 Difference]: With dead ends: 2083 [2022-01-28 14:37:59,245 INFO L226 Difference]: Without dead ends: 1866 [2022-01-28 14:37:59,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:59,245 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 104 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:59,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 126 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:59,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1866 states. [2022-01-28 14:37:59,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1866 to 1112. [2022-01-28 14:37:59,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1112 states, 1111 states have (on average 3.8730873087308733) internal successors, (4303), 1111 states have internal predecessors, (4303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:59,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 4303 transitions. [2022-01-28 14:37:59,268 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 4303 transitions. Word has length 25 [2022-01-28 14:37:59,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:59,268 INFO L470 AbstractCegarLoop]: Abstraction has 1112 states and 4303 transitions. [2022-01-28 14:37:59,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:59,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 4303 transitions. [2022-01-28 14:37:59,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:59,270 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:59,270 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:59,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable612 [2022-01-28 14:37:59,271 INFO L402 AbstractCegarLoop]: === Iteration 614 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:59,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:59,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1997859145, now seen corresponding path program 609 times [2022-01-28 14:37:59,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:59,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100342573] [2022-01-28 14:37:59,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:59,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:59,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:59,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:59,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:59,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100342573] [2022-01-28 14:37:59,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100342573] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:59,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:59,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:59,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575222839] [2022-01-28 14:37:59,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:59,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:59,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:59,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:59,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:59,347 INFO L87 Difference]: Start difference. First operand 1112 states and 4303 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:59,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:59,428 INFO L93 Difference]: Finished difference Result 2067 states and 7496 transitions. [2022-01-28 14:37:59,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:59,428 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:59,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:59,432 INFO L225 Difference]: With dead ends: 2067 [2022-01-28 14:37:59,432 INFO L226 Difference]: Without dead ends: 1878 [2022-01-28 14:37:59,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:59,432 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 93 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:59,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 131 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:59,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1878 states. [2022-01-28 14:37:59,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1878 to 1136. [2022-01-28 14:37:59,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1135 states have (on average 3.8581497797356827) internal successors, (4379), 1135 states have internal predecessors, (4379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:59,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 4379 transitions. [2022-01-28 14:37:59,449 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 4379 transitions. Word has length 25 [2022-01-28 14:37:59,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:59,450 INFO L470 AbstractCegarLoop]: Abstraction has 1136 states and 4379 transitions. [2022-01-28 14:37:59,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:59,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 4379 transitions. [2022-01-28 14:37:59,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:59,451 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:59,451 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:59,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable613 [2022-01-28 14:37:59,451 INFO L402 AbstractCegarLoop]: === Iteration 615 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:59,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:59,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1442070857, now seen corresponding path program 610 times [2022-01-28 14:37:59,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:59,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473083516] [2022-01-28 14:37:59,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:59,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:59,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:59,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:59,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473083516] [2022-01-28 14:37:59,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473083516] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:59,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:59,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:59,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506483465] [2022-01-28 14:37:59,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:59,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:59,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:59,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:59,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:59,527 INFO L87 Difference]: Start difference. First operand 1136 states and 4379 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:59,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:59,606 INFO L93 Difference]: Finished difference Result 2053 states and 7427 transitions. [2022-01-28 14:37:59,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:59,606 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:59,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:59,609 INFO L225 Difference]: With dead ends: 2053 [2022-01-28 14:37:59,609 INFO L226 Difference]: Without dead ends: 1854 [2022-01-28 14:37:59,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:59,622 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 95 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:59,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 127 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:37:59,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1854 states. [2022-01-28 14:37:59,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1854 to 1112. [2022-01-28 14:37:59,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1112 states, 1111 states have (on average 3.862286228622862) internal successors, (4291), 1111 states have internal predecessors, (4291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:59,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 4291 transitions. [2022-01-28 14:37:59,658 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 4291 transitions. Word has length 25 [2022-01-28 14:37:59,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:59,658 INFO L470 AbstractCegarLoop]: Abstraction has 1112 states and 4291 transitions. [2022-01-28 14:37:59,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:59,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 4291 transitions. [2022-01-28 14:37:59,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:59,673 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:59,673 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:59,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable614 [2022-01-28 14:37:59,674 INFO L402 AbstractCegarLoop]: === Iteration 616 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:59,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:59,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1015511531, now seen corresponding path program 611 times [2022-01-28 14:37:59,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:59,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33989285] [2022-01-28 14:37:59,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:59,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:59,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:59,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:59,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:59,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33989285] [2022-01-28 14:37:59,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33989285] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:59,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:59,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:59,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051500000] [2022-01-28 14:37:59,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:59,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:59,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:59,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:59,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:59,749 INFO L87 Difference]: Start difference. First operand 1112 states and 4291 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:59,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:37:59,817 INFO L93 Difference]: Finished difference Result 2063 states and 7474 transitions. [2022-01-28 14:37:59,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:37:59,817 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:37:59,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:37:59,821 INFO L225 Difference]: With dead ends: 2063 [2022-01-28 14:37:59,821 INFO L226 Difference]: Without dead ends: 1876 [2022-01-28 14:37:59,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:37:59,821 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 118 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:37:59,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 112 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:37:59,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1876 states. [2022-01-28 14:37:59,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1876 to 1136. [2022-01-28 14:37:59,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1135 states have (on average 3.8475770925110133) internal successors, (4367), 1135 states have internal predecessors, (4367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:59,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 4367 transitions. [2022-01-28 14:37:59,843 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 4367 transitions. Word has length 25 [2022-01-28 14:37:59,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:37:59,843 INFO L470 AbstractCegarLoop]: Abstraction has 1136 states and 4367 transitions. [2022-01-28 14:37:59,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:37:59,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 4367 transitions. [2022-01-28 14:37:59,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:37:59,844 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:37:59,845 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:37:59,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable615 [2022-01-28 14:37:59,845 INFO L402 AbstractCegarLoop]: === Iteration 617 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:37:59,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:37:59,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1222319497, now seen corresponding path program 612 times [2022-01-28 14:37:59,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:37:59,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577303003] [2022-01-28 14:37:59,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:37:59,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:37:59,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:37:59,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:37:59,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:37:59,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577303003] [2022-01-28 14:37:59,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577303003] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:37:59,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:37:59,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:37:59,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060762426] [2022-01-28 14:37:59,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:37:59,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:37:59,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:37:59,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:37:59,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:37:59,955 INFO L87 Difference]: Start difference. First operand 1136 states and 4367 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:00,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:00,069 INFO L93 Difference]: Finished difference Result 2051 states and 7410 transitions. [2022-01-28 14:38:00,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:00,069 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:00,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:00,073 INFO L225 Difference]: With dead ends: 2051 [2022-01-28 14:38:00,073 INFO L226 Difference]: Without dead ends: 1840 [2022-01-28 14:38:00,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:00,073 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 103 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:00,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 122 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:00,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1840 states. [2022-01-28 14:38:00,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1840 to 1100. [2022-01-28 14:38:00,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 1099 states have (on average 3.869881710646042) internal successors, (4253), 1099 states have internal predecessors, (4253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:00,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 4253 transitions. [2022-01-28 14:38:00,091 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 4253 transitions. Word has length 25 [2022-01-28 14:38:00,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:00,091 INFO L470 AbstractCegarLoop]: Abstraction has 1100 states and 4253 transitions. [2022-01-28 14:38:00,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:00,091 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 4253 transitions. [2022-01-28 14:38:00,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:00,093 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:00,093 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:00,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable616 [2022-01-28 14:38:00,093 INFO L402 AbstractCegarLoop]: === Iteration 618 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:00,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:00,093 INFO L85 PathProgramCache]: Analyzing trace with hash -2058580331, now seen corresponding path program 613 times [2022-01-28 14:38:00,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:00,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438463438] [2022-01-28 14:38:00,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:00,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:00,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:00,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:00,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:00,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438463438] [2022-01-28 14:38:00,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438463438] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:00,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:00,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:00,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029309944] [2022-01-28 14:38:00,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:00,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:00,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:00,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:00,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:00,180 INFO L87 Difference]: Start difference. First operand 1100 states and 4253 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:00,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:00,272 INFO L93 Difference]: Finished difference Result 2073 states and 7527 transitions. [2022-01-28 14:38:00,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:00,272 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:00,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:00,276 INFO L225 Difference]: With dead ends: 2073 [2022-01-28 14:38:00,276 INFO L226 Difference]: Without dead ends: 1884 [2022-01-28 14:38:00,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:00,276 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 102 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:00,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 117 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:00,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1884 states. [2022-01-28 14:38:00,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1884 to 1140. [2022-01-28 14:38:00,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 1139 states have (on average 3.8604038630377526) internal successors, (4397), 1139 states have internal predecessors, (4397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:00,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 4397 transitions. [2022-01-28 14:38:00,294 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 4397 transitions. Word has length 25 [2022-01-28 14:38:00,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:00,302 INFO L470 AbstractCegarLoop]: Abstraction has 1140 states and 4397 transitions. [2022-01-28 14:38:00,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:00,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 4397 transitions. [2022-01-28 14:38:00,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:00,304 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:00,304 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:00,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable617 [2022-01-28 14:38:00,304 INFO L402 AbstractCegarLoop]: === Iteration 619 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:00,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:00,304 INFO L85 PathProgramCache]: Analyzing trace with hash -866113899, now seen corresponding path program 614 times [2022-01-28 14:38:00,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:00,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323024842] [2022-01-28 14:38:00,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:00,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:00,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:00,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:00,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:00,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323024842] [2022-01-28 14:38:00,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323024842] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:00,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:00,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:00,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007317908] [2022-01-28 14:38:00,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:00,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:00,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:00,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:00,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:00,431 INFO L87 Difference]: Start difference. First operand 1140 states and 4397 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:00,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:00,543 INFO L93 Difference]: Finished difference Result 2067 states and 7482 transitions. [2022-01-28 14:38:00,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:00,543 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:00,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:00,546 INFO L225 Difference]: With dead ends: 2067 [2022-01-28 14:38:00,547 INFO L226 Difference]: Without dead ends: 1856 [2022-01-28 14:38:00,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:00,547 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 102 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:00,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 117 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:00,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1856 states. [2022-01-28 14:38:00,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1856 to 1112. [2022-01-28 14:38:00,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1112 states, 1111 states have (on average 3.867686768676868) internal successors, (4297), 1111 states have internal predecessors, (4297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:00,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 4297 transitions. [2022-01-28 14:38:00,564 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 4297 transitions. Word has length 25 [2022-01-28 14:38:00,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:00,564 INFO L470 AbstractCegarLoop]: Abstraction has 1112 states and 4297 transitions. [2022-01-28 14:38:00,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:00,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 4297 transitions. [2022-01-28 14:38:00,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:00,565 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:00,565 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:00,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable618 [2022-01-28 14:38:00,565 INFO L402 AbstractCegarLoop]: === Iteration 620 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:00,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:00,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1755484919, now seen corresponding path program 615 times [2022-01-28 14:38:00,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:00,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848428932] [2022-01-28 14:38:00,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:00,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:00,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:00,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:00,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848428932] [2022-01-28 14:38:00,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848428932] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:00,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:00,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:00,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123478680] [2022-01-28 14:38:00,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:00,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:00,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:00,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:00,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:00,652 INFO L87 Difference]: Start difference. First operand 1112 states and 4297 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:00,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:00,756 INFO L93 Difference]: Finished difference Result 2061 states and 7471 transitions. [2022-01-28 14:38:00,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:00,756 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:00,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:00,759 INFO L225 Difference]: With dead ends: 2061 [2022-01-28 14:38:00,760 INFO L226 Difference]: Without dead ends: 1872 [2022-01-28 14:38:00,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:00,760 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 99 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:00,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 136 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:00,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1872 states. [2022-01-28 14:38:00,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1872 to 1136. [2022-01-28 14:38:00,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1135 states have (on average 3.852863436123348) internal successors, (4373), 1135 states have internal predecessors, (4373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:00,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 4373 transitions. [2022-01-28 14:38:00,777 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 4373 transitions. Word has length 25 [2022-01-28 14:38:00,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:00,777 INFO L470 AbstractCegarLoop]: Abstraction has 1136 states and 4373 transitions. [2022-01-28 14:38:00,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:00,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 4373 transitions. [2022-01-28 14:38:00,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:00,779 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:00,779 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:00,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable619 [2022-01-28 14:38:00,779 INFO L402 AbstractCegarLoop]: === Iteration 621 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:00,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:00,779 INFO L85 PathProgramCache]: Analyzing trace with hash 829834901, now seen corresponding path program 616 times [2022-01-28 14:38:00,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:00,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107687289] [2022-01-28 14:38:00,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:00,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:00,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:00,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:00,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:00,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107687289] [2022-01-28 14:38:00,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107687289] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:00,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:00,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:00,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541426628] [2022-01-28 14:38:00,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:00,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:00,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:00,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:00,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:00,896 INFO L87 Difference]: Start difference. First operand 1136 states and 4373 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:00,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:01,000 INFO L93 Difference]: Finished difference Result 2047 states and 7402 transitions. [2022-01-28 14:38:01,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:01,000 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:01,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:01,004 INFO L225 Difference]: With dead ends: 2047 [2022-01-28 14:38:01,004 INFO L226 Difference]: Without dead ends: 1848 [2022-01-28 14:38:01,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:01,004 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 95 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:01,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 118 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:01,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1848 states. [2022-01-28 14:38:01,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1848 to 1112. [2022-01-28 14:38:01,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1112 states, 1111 states have (on average 3.8568856885688567) internal successors, (4285), 1111 states have internal predecessors, (4285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:01,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 4285 transitions. [2022-01-28 14:38:01,021 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 4285 transitions. Word has length 25 [2022-01-28 14:38:01,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:01,021 INFO L470 AbstractCegarLoop]: Abstraction has 1112 states and 4285 transitions. [2022-01-28 14:38:01,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:01,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 4285 transitions. [2022-01-28 14:38:01,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:01,022 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:01,023 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:01,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable620 [2022-01-28 14:38:01,023 INFO L402 AbstractCegarLoop]: === Iteration 622 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:01,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:01,023 INFO L85 PathProgramCache]: Analyzing trace with hash 670486165, now seen corresponding path program 617 times [2022-01-28 14:38:01,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:01,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047807513] [2022-01-28 14:38:01,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:01,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:01,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:01,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:01,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:01,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047807513] [2022-01-28 14:38:01,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047807513] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:01,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:01,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:01,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435682051] [2022-01-28 14:38:01,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:01,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:01,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:01,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:01,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:01,110 INFO L87 Difference]: Start difference. First operand 1112 states and 4285 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:01,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:01,188 INFO L93 Difference]: Finished difference Result 2049 states and 7425 transitions. [2022-01-28 14:38:01,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:01,188 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:01,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:01,192 INFO L225 Difference]: With dead ends: 2049 [2022-01-28 14:38:01,192 INFO L226 Difference]: Without dead ends: 1866 [2022-01-28 14:38:01,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:01,192 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 107 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:01,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 126 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:01,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1866 states. [2022-01-28 14:38:01,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1866 to 1136. [2022-01-28 14:38:01,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1135 states have (on average 3.8422907488986784) internal successors, (4361), 1135 states have internal predecessors, (4361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:01,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 4361 transitions. [2022-01-28 14:38:01,210 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 4361 transitions. Word has length 25 [2022-01-28 14:38:01,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:01,210 INFO L470 AbstractCegarLoop]: Abstraction has 1136 states and 4361 transitions. [2022-01-28 14:38:01,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:01,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 4361 transitions. [2022-01-28 14:38:01,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:01,212 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:01,212 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:01,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable621 [2022-01-28 14:38:01,212 INFO L402 AbstractCegarLoop]: === Iteration 623 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:01,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:01,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1751548791, now seen corresponding path program 618 times [2022-01-28 14:38:01,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:01,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370785129] [2022-01-28 14:38:01,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:01,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:01,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:01,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:01,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:01,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370785129] [2022-01-28 14:38:01,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370785129] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:01,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:01,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:01,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440818318] [2022-01-28 14:38:01,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:01,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:01,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:01,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:01,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:01,328 INFO L87 Difference]: Start difference. First operand 1136 states and 4361 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:01,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:01,431 INFO L93 Difference]: Finished difference Result 2041 states and 7373 transitions. [2022-01-28 14:38:01,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:01,431 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:01,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:01,435 INFO L225 Difference]: With dead ends: 2041 [2022-01-28 14:38:01,435 INFO L226 Difference]: Without dead ends: 1830 [2022-01-28 14:38:01,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:01,435 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 94 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:01,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 118 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:01,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1830 states. [2022-01-28 14:38:01,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1830 to 1100. [2022-01-28 14:38:01,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 1099 states have (on average 3.86442220200182) internal successors, (4247), 1099 states have internal predecessors, (4247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:01,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 4247 transitions. [2022-01-28 14:38:01,451 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 4247 transitions. Word has length 25 [2022-01-28 14:38:01,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:01,452 INFO L470 AbstractCegarLoop]: Abstraction has 1100 states and 4247 transitions. [2022-01-28 14:38:01,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:01,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 4247 transitions. [2022-01-28 14:38:01,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:01,453 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:01,453 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:01,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable622 [2022-01-28 14:38:01,453 INFO L402 AbstractCegarLoop]: === Iteration 624 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:01,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:01,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1086183821, now seen corresponding path program 619 times [2022-01-28 14:38:01,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:01,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852998201] [2022-01-28 14:38:01,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:01,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:01,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:01,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:01,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:01,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852998201] [2022-01-28 14:38:01,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852998201] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:01,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:01,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:01,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11286631] [2022-01-28 14:38:01,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:01,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:01,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:01,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:01,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:01,547 INFO L87 Difference]: Start difference. First operand 1100 states and 4247 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:01,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:01,653 INFO L93 Difference]: Finished difference Result 2067 states and 7506 transitions. [2022-01-28 14:38:01,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:01,653 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:01,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:01,657 INFO L225 Difference]: With dead ends: 2067 [2022-01-28 14:38:01,657 INFO L226 Difference]: Without dead ends: 1880 [2022-01-28 14:38:01,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:01,657 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 121 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:01,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 108 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:01,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2022-01-28 14:38:01,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1140. [2022-01-28 14:38:01,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 1139 states have (on average 3.85513608428446) internal successors, (4391), 1139 states have internal predecessors, (4391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:01,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 4391 transitions. [2022-01-28 14:38:01,676 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 4391 transitions. Word has length 25 [2022-01-28 14:38:01,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:01,676 INFO L470 AbstractCegarLoop]: Abstraction has 1140 states and 4391 transitions. [2022-01-28 14:38:01,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:01,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 4391 transitions. [2022-01-28 14:38:01,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:01,678 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:01,678 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:01,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable623 [2022-01-28 14:38:01,678 INFO L402 AbstractCegarLoop]: === Iteration 625 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:01,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:01,678 INFO L85 PathProgramCache]: Analyzing trace with hash -5121195, now seen corresponding path program 620 times [2022-01-28 14:38:01,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:01,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756453230] [2022-01-28 14:38:01,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:01,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:01,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:01,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:01,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756453230] [2022-01-28 14:38:01,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756453230] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:01,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:01,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:01,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291576792] [2022-01-28 14:38:01,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:01,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:01,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:01,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:01,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:01,818 INFO L87 Difference]: Start difference. First operand 1140 states and 4391 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:01,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:01,976 INFO L93 Difference]: Finished difference Result 2063 states and 7466 transitions. [2022-01-28 14:38:01,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:01,976 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:01,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:01,980 INFO L225 Difference]: With dead ends: 2063 [2022-01-28 14:38:01,980 INFO L226 Difference]: Without dead ends: 1852 [2022-01-28 14:38:01,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:01,980 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 89 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:01,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 139 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:01,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1852 states. [2022-01-28 14:38:01,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1852 to 1112. [2022-01-28 14:38:01,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1112 states, 1111 states have (on average 3.862286228622862) internal successors, (4291), 1111 states have internal predecessors, (4291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:01,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 4291 transitions. [2022-01-28 14:38:01,999 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 4291 transitions. Word has length 25 [2022-01-28 14:38:01,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:01,999 INFO L470 AbstractCegarLoop]: Abstraction has 1112 states and 4291 transitions. [2022-01-28 14:38:01,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:01,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 4291 transitions. [2022-01-28 14:38:02,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:02,000 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:02,000 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:02,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable624 [2022-01-28 14:38:02,001 INFO L402 AbstractCegarLoop]: === Iteration 626 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:02,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:02,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1567085867, now seen corresponding path program 621 times [2022-01-28 14:38:02,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:02,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788529123] [2022-01-28 14:38:02,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:02,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:02,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:02,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:02,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:02,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788529123] [2022-01-28 14:38:02,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788529123] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:02,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:02,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:02,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940394217] [2022-01-28 14:38:02,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:02,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:02,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:02,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:02,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:02,173 INFO L87 Difference]: Start difference. First operand 1112 states and 4291 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:02,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:02,271 INFO L93 Difference]: Finished difference Result 2055 states and 7450 transitions. [2022-01-28 14:38:02,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:02,271 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:02,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:02,275 INFO L225 Difference]: With dead ends: 2055 [2022-01-28 14:38:02,275 INFO L226 Difference]: Without dead ends: 1868 [2022-01-28 14:38:02,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:02,275 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 120 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:02,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 109 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:02,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1868 states. [2022-01-28 14:38:02,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1868 to 1136. [2022-01-28 14:38:02,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1135 states have (on average 3.8475770925110133) internal successors, (4367), 1135 states have internal predecessors, (4367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:02,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 4367 transitions. [2022-01-28 14:38:02,306 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 4367 transitions. Word has length 25 [2022-01-28 14:38:02,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:02,306 INFO L470 AbstractCegarLoop]: Abstraction has 1136 states and 4367 transitions. [2022-01-28 14:38:02,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:02,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 4367 transitions. [2022-01-28 14:38:02,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:02,308 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:02,308 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:02,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable625 [2022-01-28 14:38:02,308 INFO L402 AbstractCegarLoop]: === Iteration 627 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:02,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:02,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1039635157, now seen corresponding path program 622 times [2022-01-28 14:38:02,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:02,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804532524] [2022-01-28 14:38:02,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:02,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:02,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:02,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:02,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:02,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804532524] [2022-01-28 14:38:02,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804532524] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:02,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:02,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:02,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227915070] [2022-01-28 14:38:02,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:02,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:02,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:02,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:02,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:02,428 INFO L87 Difference]: Start difference. First operand 1136 states and 4367 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:02,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:02,528 INFO L93 Difference]: Finished difference Result 2043 states and 7386 transitions. [2022-01-28 14:38:02,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:02,529 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:02,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:02,532 INFO L225 Difference]: With dead ends: 2043 [2022-01-28 14:38:02,532 INFO L226 Difference]: Without dead ends: 1844 [2022-01-28 14:38:02,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:02,532 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 109 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:02,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 111 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:02,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2022-01-28 14:38:02,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1112. [2022-01-28 14:38:02,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1112 states, 1111 states have (on average 3.8514851485148514) internal successors, (4279), 1111 states have internal predecessors, (4279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:02,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 4279 transitions. [2022-01-28 14:38:02,549 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 4279 transitions. Word has length 25 [2022-01-28 14:38:02,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:02,549 INFO L470 AbstractCegarLoop]: Abstraction has 1112 states and 4279 transitions. [2022-01-28 14:38:02,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:02,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 4279 transitions. [2022-01-28 14:38:02,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:02,551 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:02,551 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:02,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable626 [2022-01-28 14:38:02,551 INFO L402 AbstractCegarLoop]: === Iteration 628 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:02,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:02,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1179080905, now seen corresponding path program 623 times [2022-01-28 14:38:02,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:02,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710577973] [2022-01-28 14:38:02,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:02,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:02,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:02,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:02,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:02,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710577973] [2022-01-28 14:38:02,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710577973] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:02,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:02,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:02,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821315004] [2022-01-28 14:38:02,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:02,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:02,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:02,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:02,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:02,663 INFO L87 Difference]: Start difference. First operand 1112 states and 4279 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:02,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:02,762 INFO L93 Difference]: Finished difference Result 2047 states and 7414 transitions. [2022-01-28 14:38:02,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:02,762 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:02,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:02,766 INFO L225 Difference]: With dead ends: 2047 [2022-01-28 14:38:02,766 INFO L226 Difference]: Without dead ends: 1864 [2022-01-28 14:38:02,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:02,766 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 111 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:02,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 117 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:02,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2022-01-28 14:38:02,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1136. [2022-01-28 14:38:02,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1135 states have (on average 3.8370044052863435) internal successors, (4355), 1135 states have internal predecessors, (4355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:02,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 4355 transitions. [2022-01-28 14:38:02,784 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 4355 transitions. Word has length 25 [2022-01-28 14:38:02,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:02,784 INFO L470 AbstractCegarLoop]: Abstraction has 1136 states and 4355 transitions. [2022-01-28 14:38:02,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:02,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 4355 transitions. [2022-01-28 14:38:02,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:02,785 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:02,785 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:02,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable627 [2022-01-28 14:38:02,785 INFO L402 AbstractCegarLoop]: === Iteration 629 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:02,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:02,786 INFO L85 PathProgramCache]: Analyzing trace with hash -2025877867, now seen corresponding path program 624 times [2022-01-28 14:38:02,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:02,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492032141] [2022-01-28 14:38:02,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:02,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:02,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:02,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:02,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:02,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492032141] [2022-01-28 14:38:02,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492032141] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:02,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:02,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:02,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385902650] [2022-01-28 14:38:02,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:02,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:02,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:02,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:02,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:02,865 INFO L87 Difference]: Start difference. First operand 1136 states and 4355 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:02,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:02,966 INFO L93 Difference]: Finished difference Result 2039 states and 7362 transitions. [2022-01-28 14:38:02,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:02,966 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:02,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:02,970 INFO L225 Difference]: With dead ends: 2039 [2022-01-28 14:38:02,970 INFO L226 Difference]: Without dead ends: 1822 [2022-01-28 14:38:02,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:02,970 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 100 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:02,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 111 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:02,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1822 states. [2022-01-28 14:38:02,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1822 to 1094. [2022-01-28 14:38:02,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 1093 states have (on average 3.8709972552607503) internal successors, (4231), 1093 states have internal predecessors, (4231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:02,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 4231 transitions. [2022-01-28 14:38:02,988 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 4231 transitions. Word has length 25 [2022-01-28 14:38:02,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:02,988 INFO L470 AbstractCegarLoop]: Abstraction has 1094 states and 4231 transitions. [2022-01-28 14:38:02,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:02,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 4231 transitions. [2022-01-28 14:38:02,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:02,989 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:02,989 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:02,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable628 [2022-01-28 14:38:02,990 INFO L402 AbstractCegarLoop]: === Iteration 630 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:02,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:02,990 INFO L85 PathProgramCache]: Analyzing trace with hash -472200137, now seen corresponding path program 625 times [2022-01-28 14:38:02,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:02,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063476423] [2022-01-28 14:38:02,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:02,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:02,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:03,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:03,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:03,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063476423] [2022-01-28 14:38:03,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063476423] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:03,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:03,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:03,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100417400] [2022-01-28 14:38:03,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:03,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:03,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:03,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:03,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:03,077 INFO L87 Difference]: Start difference. First operand 1094 states and 4231 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:03,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:03,150 INFO L93 Difference]: Finished difference Result 2083 states and 7547 transitions. [2022-01-28 14:38:03,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:03,150 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:03,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:03,153 INFO L225 Difference]: With dead ends: 2083 [2022-01-28 14:38:03,154 INFO L226 Difference]: Without dead ends: 1894 [2022-01-28 14:38:03,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:03,154 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 115 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:03,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 117 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:38:03,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1894 states. [2022-01-28 14:38:03,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1894 to 1124. [2022-01-28 14:38:03,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1124 states, 1123 states have (on average 3.85040071237756) internal successors, (4324), 1123 states have internal predecessors, (4324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:03,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1124 states to 1124 states and 4324 transitions. [2022-01-28 14:38:03,171 INFO L78 Accepts]: Start accepts. Automaton has 1124 states and 4324 transitions. Word has length 25 [2022-01-28 14:38:03,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:03,171 INFO L470 AbstractCegarLoop]: Abstraction has 1124 states and 4324 transitions. [2022-01-28 14:38:03,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:03,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1124 states and 4324 transitions. [2022-01-28 14:38:03,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:03,172 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:03,172 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:03,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable629 [2022-01-28 14:38:03,173 INFO L402 AbstractCegarLoop]: === Iteration 631 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:03,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:03,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1779430165, now seen corresponding path program 626 times [2022-01-28 14:38:03,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:03,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076259027] [2022-01-28 14:38:03,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:03,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:03,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:03,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:03,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:03,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076259027] [2022-01-28 14:38:03,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076259027] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:03,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:03,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:03,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501061871] [2022-01-28 14:38:03,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:03,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:03,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:03,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:03,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:03,257 INFO L87 Difference]: Start difference. First operand 1124 states and 4324 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:03,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:03,355 INFO L93 Difference]: Finished difference Result 2081 states and 7512 transitions. [2022-01-28 14:38:03,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:03,356 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:03,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:03,359 INFO L225 Difference]: With dead ends: 2081 [2022-01-28 14:38:03,359 INFO L226 Difference]: Without dead ends: 1864 [2022-01-28 14:38:03,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:03,359 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 104 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:03,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 123 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:03,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2022-01-28 14:38:03,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1094. [2022-01-28 14:38:03,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 1093 states have (on average 3.858188472095151) internal successors, (4217), 1093 states have internal predecessors, (4217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:03,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 4217 transitions. [2022-01-28 14:38:03,376 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 4217 transitions. Word has length 25 [2022-01-28 14:38:03,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:03,376 INFO L470 AbstractCegarLoop]: Abstraction has 1094 states and 4217 transitions. [2022-01-28 14:38:03,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:03,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 4217 transitions. [2022-01-28 14:38:03,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:03,377 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:03,377 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:03,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable630 [2022-01-28 14:38:03,378 INFO L402 AbstractCegarLoop]: === Iteration 632 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:03,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:03,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1318997099, now seen corresponding path program 627 times [2022-01-28 14:38:03,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:03,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169160722] [2022-01-28 14:38:03,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:03,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:03,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:03,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:03,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:03,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169160722] [2022-01-28 14:38:03,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169160722] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:03,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:03,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:03,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031033411] [2022-01-28 14:38:03,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:03,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:03,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:03,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:03,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:03,455 INFO L87 Difference]: Start difference. First operand 1094 states and 4217 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:03,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:03,571 INFO L93 Difference]: Finished difference Result 2077 states and 7514 transitions. [2022-01-28 14:38:03,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:03,571 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:03,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:03,574 INFO L225 Difference]: With dead ends: 2077 [2022-01-28 14:38:03,575 INFO L226 Difference]: Without dead ends: 1888 [2022-01-28 14:38:03,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:03,575 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 101 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:03,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 109 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:03,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2022-01-28 14:38:03,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1122. [2022-01-28 14:38:03,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 1121 states have (on average 3.840321141837645) internal successors, (4305), 1121 states have internal predecessors, (4305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:03,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 4305 transitions. [2022-01-28 14:38:03,592 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 4305 transitions. Word has length 25 [2022-01-28 14:38:03,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:03,592 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 4305 transitions. [2022-01-28 14:38:03,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:03,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 4305 transitions. [2022-01-28 14:38:03,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:03,593 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:03,593 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:03,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable631 [2022-01-28 14:38:03,594 INFO L402 AbstractCegarLoop]: === Iteration 633 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:03,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:03,594 INFO L85 PathProgramCache]: Analyzing trace with hash -126530667, now seen corresponding path program 628 times [2022-01-28 14:38:03,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:03,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766559146] [2022-01-28 14:38:03,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:03,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:03,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:03,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:03,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:03,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766559146] [2022-01-28 14:38:03,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766559146] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:03,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:03,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:03,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094546265] [2022-01-28 14:38:03,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:03,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:03,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:03,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:03,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:03,671 INFO L87 Difference]: Start difference. First operand 1122 states and 4305 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:03,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:03,769 INFO L93 Difference]: Finished difference Result 2071 states and 7469 transitions. [2022-01-28 14:38:03,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:03,769 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:03,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:03,773 INFO L225 Difference]: With dead ends: 2071 [2022-01-28 14:38:03,773 INFO L226 Difference]: Without dead ends: 1860 [2022-01-28 14:38:03,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:03,774 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 102 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:03,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 127 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:03,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2022-01-28 14:38:03,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1094. [2022-01-28 14:38:03,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 1093 states have (on average 3.8453796889295515) internal successors, (4203), 1093 states have internal predecessors, (4203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:03,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 4203 transitions. [2022-01-28 14:38:03,793 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 4203 transitions. Word has length 25 [2022-01-28 14:38:03,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:03,793 INFO L470 AbstractCegarLoop]: Abstraction has 1094 states and 4203 transitions. [2022-01-28 14:38:03,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:03,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 4203 transitions. [2022-01-28 14:38:03,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:03,794 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:03,794 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:03,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable632 [2022-01-28 14:38:03,794 INFO L402 AbstractCegarLoop]: === Iteration 634 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:03,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:03,795 INFO L85 PathProgramCache]: Analyzing trace with hash -336649485, now seen corresponding path program 629 times [2022-01-28 14:38:03,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:03,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664962178] [2022-01-28 14:38:03,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:03,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:03,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:03,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:03,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:03,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664962178] [2022-01-28 14:38:03,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664962178] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:03,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:03,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:03,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127491017] [2022-01-28 14:38:03,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:03,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:03,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:03,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:03,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:03,874 INFO L87 Difference]: Start difference. First operand 1094 states and 4203 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:03,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:03,950 INFO L93 Difference]: Finished difference Result 2073 states and 7490 transitions. [2022-01-28 14:38:03,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:03,951 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:03,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:03,954 INFO L225 Difference]: With dead ends: 2073 [2022-01-28 14:38:03,954 INFO L226 Difference]: Without dead ends: 1886 [2022-01-28 14:38:03,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:03,954 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 116 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:03,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 109 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:38:03,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1886 states. [2022-01-28 14:38:03,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1886 to 1122. [2022-01-28 14:38:03,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 1121 states have (on average 3.8278322925958963) internal successors, (4291), 1121 states have internal predecessors, (4291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:03,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 4291 transitions. [2022-01-28 14:38:03,972 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 4291 transitions. Word has length 25 [2022-01-28 14:38:03,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:03,972 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 4291 transitions. [2022-01-28 14:38:03,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:03,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 4291 transitions. [2022-01-28 14:38:03,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:03,973 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:03,973 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:03,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable633 [2022-01-28 14:38:03,973 INFO L402 AbstractCegarLoop]: === Iteration 635 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:03,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:03,974 INFO L85 PathProgramCache]: Analyzing trace with hash 744413141, now seen corresponding path program 630 times [2022-01-28 14:38:03,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:03,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996563976] [2022-01-28 14:38:03,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:03,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:03,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:04,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:04,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:04,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996563976] [2022-01-28 14:38:04,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996563976] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:04,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:04,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:04,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741892104] [2022-01-28 14:38:04,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:04,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:04,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:04,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:04,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:04,049 INFO L87 Difference]: Start difference. First operand 1122 states and 4291 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:04,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:04,122 INFO L93 Difference]: Finished difference Result 2069 states and 7450 transitions. [2022-01-28 14:38:04,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:04,123 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:04,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:04,126 INFO L225 Difference]: With dead ends: 2069 [2022-01-28 14:38:04,126 INFO L226 Difference]: Without dead ends: 1844 [2022-01-28 14:38:04,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:04,127 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 114 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:04,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 109 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:38:04,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2022-01-28 14:38:04,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1080. [2022-01-28 14:38:04,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1080 states, 1079 states have (on average 3.854494902687674) internal successors, (4159), 1079 states have internal predecessors, (4159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:04,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 4159 transitions. [2022-01-28 14:38:04,143 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 4159 transitions. Word has length 25 [2022-01-28 14:38:04,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:04,143 INFO L470 AbstractCegarLoop]: Abstraction has 1080 states and 4159 transitions. [2022-01-28 14:38:04,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:04,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 4159 transitions. [2022-01-28 14:38:04,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:04,145 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:04,145 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:04,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable634 [2022-01-28 14:38:04,145 INFO L402 AbstractCegarLoop]: === Iteration 636 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:04,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:04,145 INFO L85 PathProgramCache]: Analyzing trace with hash 960758839, now seen corresponding path program 631 times [2022-01-28 14:38:04,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:04,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073930580] [2022-01-28 14:38:04,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:04,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:04,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:04,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:04,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:04,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073930580] [2022-01-28 14:38:04,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073930580] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:04,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:04,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:04,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542169205] [2022-01-28 14:38:04,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:04,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:04,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:04,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:04,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:04,222 INFO L87 Difference]: Start difference. First operand 1080 states and 4159 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:04,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:04,304 INFO L93 Difference]: Finished difference Result 2170 states and 7829 transitions. [2022-01-28 14:38:04,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:04,304 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:04,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:04,308 INFO L225 Difference]: With dead ends: 2170 [2022-01-28 14:38:04,308 INFO L226 Difference]: Without dead ends: 1981 [2022-01-28 14:38:04,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:04,309 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 102 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:04,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 117 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:04,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1981 states. [2022-01-28 14:38:04,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1981 to 1149. [2022-01-28 14:38:04,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1149 states, 1148 states have (on average 3.837108013937282) internal successors, (4405), 1148 states have internal predecessors, (4405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:04,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 4405 transitions. [2022-01-28 14:38:04,326 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 4405 transitions. Word has length 25 [2022-01-28 14:38:04,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:04,326 INFO L470 AbstractCegarLoop]: Abstraction has 1149 states and 4405 transitions. [2022-01-28 14:38:04,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:04,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 4405 transitions. [2022-01-28 14:38:04,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:04,328 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:04,328 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:04,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable635 [2022-01-28 14:38:04,328 INFO L402 AbstractCegarLoop]: === Iteration 637 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:04,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:04,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1082578155, now seen corresponding path program 632 times [2022-01-28 14:38:04,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:04,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314508101] [2022-01-28 14:38:04,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:04,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:04,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:04,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:04,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:04,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314508101] [2022-01-28 14:38:04,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314508101] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:04,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:04,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:04,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106776279] [2022-01-28 14:38:04,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:04,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:04,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:04,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:04,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:04,406 INFO L87 Difference]: Start difference. First operand 1149 states and 4405 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:04,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:04,481 INFO L93 Difference]: Finished difference Result 2168 states and 7794 transitions. [2022-01-28 14:38:04,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:04,481 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:04,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:04,484 INFO L225 Difference]: With dead ends: 2168 [2022-01-28 14:38:04,484 INFO L226 Difference]: Without dead ends: 1951 [2022-01-28 14:38:04,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:04,485 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 109 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:04,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 110 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:38:04,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1951 states. [2022-01-28 14:38:04,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1951 to 1119. [2022-01-28 14:38:04,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 3.8434704830053668) internal successors, (4297), 1118 states have internal predecessors, (4297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:04,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 4297 transitions. [2022-01-28 14:38:04,501 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 4297 transitions. Word has length 25 [2022-01-28 14:38:04,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:04,501 INFO L470 AbstractCegarLoop]: Abstraction has 1119 states and 4297 transitions. [2022-01-28 14:38:04,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:04,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 4297 transitions. [2022-01-28 14:38:04,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:04,503 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:04,503 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:04,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable636 [2022-01-28 14:38:04,503 INFO L402 AbstractCegarLoop]: === Iteration 638 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:04,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:04,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1386499127, now seen corresponding path program 633 times [2022-01-28 14:38:04,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:04,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835807277] [2022-01-28 14:38:04,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:04,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:04,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:04,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:04,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:04,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835807277] [2022-01-28 14:38:04,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835807277] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:04,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:04,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:04,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765248520] [2022-01-28 14:38:04,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:04,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:04,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:04,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:04,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:04,583 INFO L87 Difference]: Start difference. First operand 1119 states and 4297 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:04,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:04,664 INFO L93 Difference]: Finished difference Result 2176 states and 7827 transitions. [2022-01-28 14:38:04,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:04,664 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:04,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:04,669 INFO L225 Difference]: With dead ends: 2176 [2022-01-28 14:38:04,669 INFO L226 Difference]: Without dead ends: 1987 [2022-01-28 14:38:04,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:04,669 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 106 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:04,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 111 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:04,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1987 states. [2022-01-28 14:38:04,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1987 to 1182. [2022-01-28 14:38:04,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1182 states, 1181 states have (on average 3.8137171888230315) internal successors, (4504), 1181 states have internal predecessors, (4504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:04,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 4504 transitions. [2022-01-28 14:38:04,688 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 4504 transitions. Word has length 25 [2022-01-28 14:38:04,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:04,688 INFO L470 AbstractCegarLoop]: Abstraction has 1182 states and 4504 transitions. [2022-01-28 14:38:04,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:04,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 4504 transitions. [2022-01-28 14:38:04,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:04,689 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:04,689 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:04,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable637 [2022-01-28 14:38:04,689 INFO L402 AbstractCegarLoop]: === Iteration 639 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:04,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:04,690 INFO L85 PathProgramCache]: Analyzing trace with hash 830710839, now seen corresponding path program 634 times [2022-01-28 14:38:04,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:04,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114929315] [2022-01-28 14:38:04,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:04,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:04,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:04,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:04,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:04,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114929315] [2022-01-28 14:38:04,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114929315] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:04,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:04,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:04,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212285839] [2022-01-28 14:38:04,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:04,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:04,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:04,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:04,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:04,771 INFO L87 Difference]: Start difference. First operand 1182 states and 4504 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:04,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:04,846 INFO L93 Difference]: Finished difference Result 2081 states and 7525 transitions. [2022-01-28 14:38:04,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:04,846 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:04,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:04,849 INFO L225 Difference]: With dead ends: 2081 [2022-01-28 14:38:04,849 INFO L226 Difference]: Without dead ends: 1796 [2022-01-28 14:38:04,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:04,849 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 107 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:04,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 111 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:04,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1796 states. [2022-01-28 14:38:04,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1796 to 1119. [2022-01-28 14:38:04,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 3.815742397137746) internal successors, (4266), 1118 states have internal predecessors, (4266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:04,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 4266 transitions. [2022-01-28 14:38:04,866 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 4266 transitions. Word has length 25 [2022-01-28 14:38:04,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:04,866 INFO L470 AbstractCegarLoop]: Abstraction has 1119 states and 4266 transitions. [2022-01-28 14:38:04,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:04,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 4266 transitions. [2022-01-28 14:38:04,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:04,868 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:04,868 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:04,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable638 [2022-01-28 14:38:04,868 INFO L402 AbstractCegarLoop]: === Iteration 640 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:04,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:04,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1926120555, now seen corresponding path program 635 times [2022-01-28 14:38:04,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:04,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900975450] [2022-01-28 14:38:04,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:04,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:04,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:04,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:04,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:04,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900975450] [2022-01-28 14:38:04,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900975450] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:04,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:04,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:04,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894423260] [2022-01-28 14:38:04,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:04,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:04,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:04,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:04,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:04,949 INFO L87 Difference]: Start difference. First operand 1119 states and 4266 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:05,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:05,030 INFO L93 Difference]: Finished difference Result 2157 states and 7740 transitions. [2022-01-28 14:38:05,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:05,030 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:05,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:05,033 INFO L225 Difference]: With dead ends: 2157 [2022-01-28 14:38:05,033 INFO L226 Difference]: Without dead ends: 1970 [2022-01-28 14:38:05,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:05,034 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 113 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:05,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 124 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:05,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1970 states. [2022-01-28 14:38:05,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1970 to 1165. [2022-01-28 14:38:05,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 1164 states have (on average 3.799828178694158) internal successors, (4423), 1164 states have internal predecessors, (4423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:05,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 4423 transitions. [2022-01-28 14:38:05,052 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 4423 transitions. Word has length 25 [2022-01-28 14:38:05,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:05,052 INFO L470 AbstractCegarLoop]: Abstraction has 1165 states and 4423 transitions. [2022-01-28 14:38:05,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:05,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 4423 transitions. [2022-01-28 14:38:05,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:05,055 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:05,055 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:05,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable639 [2022-01-28 14:38:05,055 INFO L402 AbstractCegarLoop]: === Iteration 641 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:05,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:05,056 INFO L85 PathProgramCache]: Analyzing trace with hash 11457143, now seen corresponding path program 636 times [2022-01-28 14:38:05,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:05,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500743139] [2022-01-28 14:38:05,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:05,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:05,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:05,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:05,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:05,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500743139] [2022-01-28 14:38:05,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500743139] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:05,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:05,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:05,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911789047] [2022-01-28 14:38:05,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:05,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:05,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:05,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:05,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:05,153 INFO L87 Difference]: Start difference. First operand 1165 states and 4423 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:05,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:05,256 INFO L93 Difference]: Finished difference Result 2064 states and 7444 transitions. [2022-01-28 14:38:05,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:05,256 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:05,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:05,260 INFO L225 Difference]: With dead ends: 2064 [2022-01-28 14:38:05,260 INFO L226 Difference]: Without dead ends: 1757 [2022-01-28 14:38:05,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:05,260 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 101 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:05,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 110 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:05,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1757 states. [2022-01-28 14:38:05,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1757 to 1080. [2022-01-28 14:38:05,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1080 states, 1079 states have (on average 3.836886005560704) internal successors, (4140), 1079 states have internal predecessors, (4140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:05,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 4140 transitions. [2022-01-28 14:38:05,289 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 4140 transitions. Word has length 25 [2022-01-28 14:38:05,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:05,289 INFO L470 AbstractCegarLoop]: Abstraction has 1080 states and 4140 transitions. [2022-01-28 14:38:05,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:05,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 4140 transitions. [2022-01-28 14:38:05,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:05,291 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:05,291 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:05,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable640 [2022-01-28 14:38:05,291 INFO L402 AbstractCegarLoop]: === Iteration 642 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:05,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:05,292 INFO L85 PathProgramCache]: Analyzing trace with hash 104010773, now seen corresponding path program 637 times [2022-01-28 14:38:05,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:05,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575254497] [2022-01-28 14:38:05,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:05,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:05,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:05,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:05,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:05,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575254497] [2022-01-28 14:38:05,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575254497] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:05,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:05,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:05,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428687475] [2022-01-28 14:38:05,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:05,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:05,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:05,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:05,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:05,409 INFO L87 Difference]: Start difference. First operand 1080 states and 4140 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:05,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:05,524 INFO L93 Difference]: Finished difference Result 2149 states and 7748 transitions. [2022-01-28 14:38:05,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:05,525 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:05,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:05,529 INFO L225 Difference]: With dead ends: 2149 [2022-01-28 14:38:05,529 INFO L226 Difference]: Without dead ends: 1960 [2022-01-28 14:38:05,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:05,529 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 103 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:05,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 119 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:05,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1960 states. [2022-01-28 14:38:05,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1960 to 1138. [2022-01-28 14:38:05,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1138 states, 1137 states have (on average 3.832014072119613) internal successors, (4357), 1137 states have internal predecessors, (4357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:05,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 4357 transitions. [2022-01-28 14:38:05,549 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 4357 transitions. Word has length 25 [2022-01-28 14:38:05,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:05,549 INFO L470 AbstractCegarLoop]: Abstraction has 1138 states and 4357 transitions. [2022-01-28 14:38:05,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:05,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 4357 transitions. [2022-01-28 14:38:05,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:05,551 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:05,551 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:05,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable641 [2022-01-28 14:38:05,551 INFO L402 AbstractCegarLoop]: === Iteration 643 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:05,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:05,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1296477205, now seen corresponding path program 638 times [2022-01-28 14:38:05,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:05,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089880049] [2022-01-28 14:38:05,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:05,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:05,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:05,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:05,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:05,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089880049] [2022-01-28 14:38:05,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089880049] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:05,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:05,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:05,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122405740] [2022-01-28 14:38:05,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:05,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:05,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:05,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:05,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:05,681 INFO L87 Difference]: Start difference. First operand 1138 states and 4357 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:05,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:05,796 INFO L93 Difference]: Finished difference Result 2143 states and 7703 transitions. [2022-01-28 14:38:05,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:05,796 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:05,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:05,800 INFO L225 Difference]: With dead ends: 2143 [2022-01-28 14:38:05,800 INFO L226 Difference]: Without dead ends: 1932 [2022-01-28 14:38:05,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:05,800 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 99 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:05,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 125 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:05,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1932 states. [2022-01-28 14:38:05,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1932 to 1110. [2022-01-28 14:38:05,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1110 states, 1109 states have (on average 3.836789900811542) internal successors, (4255), 1109 states have internal predecessors, (4255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:05,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 4255 transitions. [2022-01-28 14:38:05,820 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 4255 transitions. Word has length 25 [2022-01-28 14:38:05,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:05,820 INFO L470 AbstractCegarLoop]: Abstraction has 1110 states and 4255 transitions. [2022-01-28 14:38:05,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:05,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 4255 transitions. [2022-01-28 14:38:05,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:05,822 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:05,822 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:05,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable642 [2022-01-28 14:38:05,822 INFO L402 AbstractCegarLoop]: === Iteration 644 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:05,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:05,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1206570249, now seen corresponding path program 639 times [2022-01-28 14:38:05,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:05,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979589153] [2022-01-28 14:38:05,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:05,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:05,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:05,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:05,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:05,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979589153] [2022-01-28 14:38:05,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979589153] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:05,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:05,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:05,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060268978] [2022-01-28 14:38:05,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:05,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:05,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:05,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:05,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:05,906 INFO L87 Difference]: Start difference. First operand 1110 states and 4255 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:05,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:05,990 INFO L93 Difference]: Finished difference Result 2161 states and 7766 transitions. [2022-01-28 14:38:05,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:05,991 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:05,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:05,995 INFO L225 Difference]: With dead ends: 2161 [2022-01-28 14:38:05,995 INFO L226 Difference]: Without dead ends: 1972 [2022-01-28 14:38:05,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:05,995 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 105 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:05,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 110 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:05,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1972 states. [2022-01-28 14:38:06,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1972 to 1173. [2022-01-28 14:38:06,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 1172 states have (on average 3.8071672354948807) internal successors, (4462), 1172 states have internal predecessors, (4462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:06,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 4462 transitions. [2022-01-28 14:38:06,015 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 4462 transitions. Word has length 25 [2022-01-28 14:38:06,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:06,015 INFO L470 AbstractCegarLoop]: Abstraction has 1173 states and 4462 transitions. [2022-01-28 14:38:06,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:06,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 4462 transitions. [2022-01-28 14:38:06,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:06,017 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:06,017 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:06,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable643 [2022-01-28 14:38:06,017 INFO L402 AbstractCegarLoop]: === Iteration 645 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:06,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:06,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1192350699, now seen corresponding path program 640 times [2022-01-28 14:38:06,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:06,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145064658] [2022-01-28 14:38:06,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:06,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:06,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:06,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:06,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:06,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145064658] [2022-01-28 14:38:06,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145064658] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:06,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:06,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:06,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677631403] [2022-01-28 14:38:06,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:06,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:06,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:06,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:06,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:06,124 INFO L87 Difference]: Start difference. First operand 1173 states and 4462 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:06,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:06,209 INFO L93 Difference]: Finished difference Result 2066 states and 7464 transitions. [2022-01-28 14:38:06,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:06,209 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:06,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:06,214 INFO L225 Difference]: With dead ends: 2066 [2022-01-28 14:38:06,214 INFO L226 Difference]: Without dead ends: 1781 [2022-01-28 14:38:06,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:06,214 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 109 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:06,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 116 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:06,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1781 states. [2022-01-28 14:38:06,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1781 to 1110. [2022-01-28 14:38:06,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1110 states, 1109 states have (on average 3.8097385031559963) internal successors, (4225), 1109 states have internal predecessors, (4225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:06,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 4225 transitions. [2022-01-28 14:38:06,237 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 4225 transitions. Word has length 25 [2022-01-28 14:38:06,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:06,237 INFO L470 AbstractCegarLoop]: Abstraction has 1110 states and 4225 transitions. [2022-01-28 14:38:06,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:06,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 4225 transitions. [2022-01-28 14:38:06,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:06,239 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:06,239 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:06,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable644 [2022-01-28 14:38:06,239 INFO L402 AbstractCegarLoop]: === Iteration 646 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:06,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:06,240 INFO L85 PathProgramCache]: Analyzing trace with hash -240122859, now seen corresponding path program 641 times [2022-01-28 14:38:06,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:06,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788255087] [2022-01-28 14:38:06,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:06,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:06,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:06,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:06,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788255087] [2022-01-28 14:38:06,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788255087] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:06,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:06,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:06,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25991536] [2022-01-28 14:38:06,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:06,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:06,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:06,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:06,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:06,352 INFO L87 Difference]: Start difference. First operand 1110 states and 4225 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:06,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:06,438 INFO L93 Difference]: Finished difference Result 2136 states and 7661 transitions. [2022-01-28 14:38:06,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:06,438 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:06,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:06,442 INFO L225 Difference]: With dead ends: 2136 [2022-01-28 14:38:06,443 INFO L226 Difference]: Without dead ends: 1953 [2022-01-28 14:38:06,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:06,443 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 101 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:06,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 115 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:06,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1953 states. [2022-01-28 14:38:06,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1953 to 1154. [2022-01-28 14:38:06,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 1153 states have (on average 3.7961838681699915) internal successors, (4377), 1153 states have internal predecessors, (4377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:06,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 4377 transitions. [2022-01-28 14:38:06,461 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 4377 transitions. Word has length 25 [2022-01-28 14:38:06,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:06,461 INFO L470 AbstractCegarLoop]: Abstraction has 1154 states and 4377 transitions. [2022-01-28 14:38:06,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:06,462 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 4377 transitions. [2022-01-28 14:38:06,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:06,463 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:06,463 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:06,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable645 [2022-01-28 14:38:06,463 INFO L402 AbstractCegarLoop]: === Iteration 647 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:06,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:06,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1309641865, now seen corresponding path program 642 times [2022-01-28 14:38:06,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:06,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358922000] [2022-01-28 14:38:06,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:06,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:06,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:06,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:06,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:06,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358922000] [2022-01-28 14:38:06,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358922000] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:06,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:06,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:06,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123464587] [2022-01-28 14:38:06,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:06,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:06,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:06,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:06,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:06,550 INFO L87 Difference]: Start difference. First operand 1154 states and 4377 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:06,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:06,629 INFO L93 Difference]: Finished difference Result 2047 states and 7379 transitions. [2022-01-28 14:38:06,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:06,629 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:06,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:06,633 INFO L225 Difference]: With dead ends: 2047 [2022-01-28 14:38:06,633 INFO L226 Difference]: Without dead ends: 1751 [2022-01-28 14:38:06,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:06,633 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 107 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:06,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 114 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:06,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2022-01-28 14:38:06,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1080. [2022-01-28 14:38:06,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1080 states, 1079 states have (on average 3.822984244670992) internal successors, (4125), 1079 states have internal predecessors, (4125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:06,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 4125 transitions. [2022-01-28 14:38:06,652 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 4125 transitions. Word has length 25 [2022-01-28 14:38:06,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:06,652 INFO L470 AbstractCegarLoop]: Abstraction has 1080 states and 4125 transitions. [2022-01-28 14:38:06,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:06,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 4125 transitions. [2022-01-28 14:38:06,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:06,654 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:06,654 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:06,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable646 [2022-01-28 14:38:06,654 INFO L402 AbstractCegarLoop]: === Iteration 648 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:06,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:06,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1076407283, now seen corresponding path program 643 times [2022-01-28 14:38:06,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:06,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237969236] [2022-01-28 14:38:06,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:06,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:06,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:06,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:06,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237969236] [2022-01-28 14:38:06,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237969236] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:06,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:06,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:06,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773318880] [2022-01-28 14:38:06,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:06,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:06,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:06,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:06,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:06,740 INFO L87 Difference]: Start difference. First operand 1080 states and 4125 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:06,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:06,831 INFO L93 Difference]: Finished difference Result 2118 states and 7639 transitions. [2022-01-28 14:38:06,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:06,831 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:06,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:06,835 INFO L225 Difference]: With dead ends: 2118 [2022-01-28 14:38:06,836 INFO L226 Difference]: Without dead ends: 1931 [2022-01-28 14:38:06,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:06,836 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 104 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:06,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 142 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:06,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1931 states. [2022-01-28 14:38:06,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1931 to 1130. [2022-01-28 14:38:06,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 1129 states have (on average 3.821080602302923) internal successors, (4314), 1129 states have internal predecessors, (4314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:06,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 4314 transitions. [2022-01-28 14:38:06,860 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 4314 transitions. Word has length 25 [2022-01-28 14:38:06,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:06,861 INFO L470 AbstractCegarLoop]: Abstraction has 1130 states and 4314 transitions. [2022-01-28 14:38:06,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:06,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 4314 transitions. [2022-01-28 14:38:06,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:06,863 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:06,863 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:06,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable647 [2022-01-28 14:38:06,863 INFO L402 AbstractCegarLoop]: === Iteration 649 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:06,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:06,863 INFO L85 PathProgramCache]: Analyzing trace with hash -2137497387, now seen corresponding path program 644 times [2022-01-28 14:38:06,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:06,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4382271] [2022-01-28 14:38:06,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:06,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:06,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:06,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:06,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4382271] [2022-01-28 14:38:06,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4382271] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:06,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:06,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:06,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701035607] [2022-01-28 14:38:06,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:06,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:06,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:06,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:06,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:06,966 INFO L87 Difference]: Start difference. First operand 1130 states and 4314 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:07,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:07,060 INFO L93 Difference]: Finished difference Result 2114 states and 7599 transitions. [2022-01-28 14:38:07,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:07,060 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:07,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:07,064 INFO L225 Difference]: With dead ends: 2114 [2022-01-28 14:38:07,064 INFO L226 Difference]: Without dead ends: 1903 [2022-01-28 14:38:07,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:07,064 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 99 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:07,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 124 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:07,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1903 states. [2022-01-28 14:38:07,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1903 to 1102. [2022-01-28 14:38:07,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 1101 states have (on average 3.8256130790190737) internal successors, (4212), 1101 states have internal predecessors, (4212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:07,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 4212 transitions. [2022-01-28 14:38:07,083 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 4212 transitions. Word has length 25 [2022-01-28 14:38:07,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:07,083 INFO L470 AbstractCegarLoop]: Abstraction has 1102 states and 4212 transitions. [2022-01-28 14:38:07,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:07,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 4212 transitions. [2022-01-28 14:38:07,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:07,085 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:07,085 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:07,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable648 [2022-01-28 14:38:07,085 INFO L402 AbstractCegarLoop]: === Iteration 650 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:07,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:07,085 INFO L85 PathProgramCache]: Analyzing trace with hash -234173739, now seen corresponding path program 645 times [2022-01-28 14:38:07,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:07,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557233474] [2022-01-28 14:38:07,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:07,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:07,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:07,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:07,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:07,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557233474] [2022-01-28 14:38:07,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557233474] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:07,194 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:07,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:07,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695387184] [2022-01-28 14:38:07,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:07,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:07,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:07,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:07,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:07,194 INFO L87 Difference]: Start difference. First operand 1102 states and 4212 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:07,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:07,296 INFO L93 Difference]: Finished difference Result 2115 states and 7611 transitions. [2022-01-28 14:38:07,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:07,297 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:07,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:07,300 INFO L225 Difference]: With dead ends: 2115 [2022-01-28 14:38:07,300 INFO L226 Difference]: Without dead ends: 1928 [2022-01-28 14:38:07,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:07,301 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 104 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:07,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 111 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:07,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1928 states. [2022-01-28 14:38:07,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1928 to 1148. [2022-01-28 14:38:07,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1148 states, 1147 states have (on average 3.809067131647777) internal successors, (4369), 1147 states have internal predecessors, (4369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:07,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 4369 transitions. [2022-01-28 14:38:07,320 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 4369 transitions. Word has length 25 [2022-01-28 14:38:07,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:07,320 INFO L470 AbstractCegarLoop]: Abstraction has 1148 states and 4369 transitions. [2022-01-28 14:38:07,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:07,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 4369 transitions. [2022-01-28 14:38:07,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:07,322 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:07,322 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:07,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable649 [2022-01-28 14:38:07,322 INFO L402 AbstractCegarLoop]: === Iteration 651 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:07,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:07,322 INFO L85 PathProgramCache]: Analyzing trace with hash -2021555499, now seen corresponding path program 646 times [2022-01-28 14:38:07,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:07,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085600265] [2022-01-28 14:38:07,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:07,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:07,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:07,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:07,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:07,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085600265] [2022-01-28 14:38:07,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085600265] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:07,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:07,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:07,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661876447] [2022-01-28 14:38:07,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:07,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:07,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:07,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:07,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:07,413 INFO L87 Difference]: Start difference. First operand 1148 states and 4369 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:07,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:07,484 INFO L93 Difference]: Finished difference Result 2022 states and 7315 transitions. [2022-01-28 14:38:07,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:07,484 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:07,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:07,488 INFO L225 Difference]: With dead ends: 2022 [2022-01-28 14:38:07,488 INFO L226 Difference]: Without dead ends: 1754 [2022-01-28 14:38:07,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:07,488 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 114 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:07,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 111 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:07,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1754 states. [2022-01-28 14:38:07,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1754 to 1102. [2022-01-28 14:38:07,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 1101 states have (on average 3.8056312443233424) internal successors, (4190), 1101 states have internal predecessors, (4190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:07,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 4190 transitions. [2022-01-28 14:38:07,505 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 4190 transitions. Word has length 25 [2022-01-28 14:38:07,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:07,506 INFO L470 AbstractCegarLoop]: Abstraction has 1102 states and 4190 transitions. [2022-01-28 14:38:07,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:07,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 4190 transitions. [2022-01-28 14:38:07,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:07,507 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:07,507 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:07,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable650 [2022-01-28 14:38:07,507 INFO L402 AbstractCegarLoop]: === Iteration 652 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:07,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:07,507 INFO L85 PathProgramCache]: Analyzing trace with hash 153831223, now seen corresponding path program 647 times [2022-01-28 14:38:07,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:07,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645165002] [2022-01-28 14:38:07,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:07,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:07,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:07,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:07,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:07,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645165002] [2022-01-28 14:38:07,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645165002] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:07,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:07,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:07,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628593738] [2022-01-28 14:38:07,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:07,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:07,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:07,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:07,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:07,592 INFO L87 Difference]: Start difference. First operand 1102 states and 4190 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:07,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:07,683 INFO L93 Difference]: Finished difference Result 2109 states and 7570 transitions. [2022-01-28 14:38:07,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:07,683 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:07,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:07,687 INFO L225 Difference]: With dead ends: 2109 [2022-01-28 14:38:07,687 INFO L226 Difference]: Without dead ends: 1926 [2022-01-28 14:38:07,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:07,687 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 104 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:07,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 133 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:07,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1926 states. [2022-01-28 14:38:07,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1926 to 1146. [2022-01-28 14:38:07,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 1145 states have (on average 3.7921397379912665) internal successors, (4342), 1145 states have internal predecessors, (4342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:07,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 4342 transitions. [2022-01-28 14:38:07,705 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 4342 transitions. Word has length 25 [2022-01-28 14:38:07,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:07,705 INFO L470 AbstractCegarLoop]: Abstraction has 1146 states and 4342 transitions. [2022-01-28 14:38:07,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:07,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 4342 transitions. [2022-01-28 14:38:07,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:07,707 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:07,707 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:07,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable651 [2022-01-28 14:38:07,707 INFO L402 AbstractCegarLoop]: === Iteration 653 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:07,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:07,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1358480405, now seen corresponding path program 648 times [2022-01-28 14:38:07,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:07,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743589506] [2022-01-28 14:38:07,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:07,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:07,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:07,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:07,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743589506] [2022-01-28 14:38:07,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743589506] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:07,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:07,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:07,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113325759] [2022-01-28 14:38:07,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:07,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:07,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:07,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:07,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:07,787 INFO L87 Difference]: Start difference. First operand 1146 states and 4342 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:07,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:07,852 INFO L93 Difference]: Finished difference Result 2020 states and 7288 transitions. [2022-01-28 14:38:07,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:07,852 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:07,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:07,856 INFO L225 Difference]: With dead ends: 2020 [2022-01-28 14:38:07,856 INFO L226 Difference]: Without dead ends: 1709 [2022-01-28 14:38:07,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:07,856 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 103 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:07,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 102 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:38:07,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1709 states. [2022-01-28 14:38:07,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1709 to 1057. [2022-01-28 14:38:07,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 1056 states have (on average 3.847537878787879) internal successors, (4063), 1056 states have internal predecessors, (4063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:07,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 4063 transitions. [2022-01-28 14:38:07,873 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 4063 transitions. Word has length 25 [2022-01-28 14:38:07,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:07,874 INFO L470 AbstractCegarLoop]: Abstraction has 1057 states and 4063 transitions. [2022-01-28 14:38:07,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:07,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 4063 transitions. [2022-01-28 14:38:07,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:07,875 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:07,875 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:07,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable652 [2022-01-28 14:38:07,875 INFO L402 AbstractCegarLoop]: === Iteration 654 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:07,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:07,876 INFO L85 PathProgramCache]: Analyzing trace with hash 826629269, now seen corresponding path program 649 times [2022-01-28 14:38:07,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:07,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142012562] [2022-01-28 14:38:07,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:07,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:07,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:07,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:07,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:07,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142012562] [2022-01-28 14:38:07,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142012562] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:07,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:07,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:07,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533907640] [2022-01-28 14:38:07,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:07,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:07,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:07,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:07,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:07,950 INFO L87 Difference]: Start difference. First operand 1057 states and 4063 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:08,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:08,050 INFO L93 Difference]: Finished difference Result 2000 states and 7196 transitions. [2022-01-28 14:38:08,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:08,050 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:08,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:08,053 INFO L225 Difference]: With dead ends: 2000 [2022-01-28 14:38:08,053 INFO L226 Difference]: Without dead ends: 1811 [2022-01-28 14:38:08,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:08,053 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 101 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:08,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 107 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:08,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1811 states. [2022-01-28 14:38:08,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1811 to 1087. [2022-01-28 14:38:08,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 3.826887661141805) internal successors, (4156), 1086 states have internal predecessors, (4156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:08,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 4156 transitions. [2022-01-28 14:38:08,071 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 4156 transitions. Word has length 25 [2022-01-28 14:38:08,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:08,071 INFO L470 AbstractCegarLoop]: Abstraction has 1087 states and 4156 transitions. [2022-01-28 14:38:08,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:08,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 4156 transitions. [2022-01-28 14:38:08,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:08,073 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:08,073 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:08,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable653 [2022-01-28 14:38:08,073 INFO L402 AbstractCegarLoop]: === Iteration 655 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:08,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:08,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1216707725, now seen corresponding path program 650 times [2022-01-28 14:38:08,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:08,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788988280] [2022-01-28 14:38:08,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:08,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:08,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:08,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:08,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:08,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788988280] [2022-01-28 14:38:08,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788988280] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:08,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:08,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:08,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885903461] [2022-01-28 14:38:08,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:08,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:08,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:08,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:08,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:08,192 INFO L87 Difference]: Start difference. First operand 1087 states and 4156 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:08,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:08,294 INFO L93 Difference]: Finished difference Result 1998 states and 7161 transitions. [2022-01-28 14:38:08,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:08,294 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:08,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:08,297 INFO L225 Difference]: With dead ends: 1998 [2022-01-28 14:38:08,297 INFO L226 Difference]: Without dead ends: 1781 [2022-01-28 14:38:08,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:08,298 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 97 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:08,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 111 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:08,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1781 states. [2022-01-28 14:38:08,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1781 to 1057. [2022-01-28 14:38:08,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 1056 states have (on average 3.836174242424242) internal successors, (4051), 1056 states have internal predecessors, (4051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:08,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 4051 transitions. [2022-01-28 14:38:08,314 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 4051 transitions. Word has length 25 [2022-01-28 14:38:08,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:08,315 INFO L470 AbstractCegarLoop]: Abstraction has 1057 states and 4051 transitions. [2022-01-28 14:38:08,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:08,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 4051 transitions. [2022-01-28 14:38:08,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:08,316 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:08,316 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:08,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable654 [2022-01-28 14:38:08,316 INFO L402 AbstractCegarLoop]: === Iteration 656 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:08,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:08,317 INFO L85 PathProgramCache]: Analyzing trace with hash 30602389, now seen corresponding path program 651 times [2022-01-28 14:38:08,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:08,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933494122] [2022-01-28 14:38:08,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:08,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:08,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:08,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:08,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:08,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933494122] [2022-01-28 14:38:08,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933494122] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:08,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:08,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:08,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871296244] [2022-01-28 14:38:08,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:08,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:08,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:08,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:08,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:08,401 INFO L87 Difference]: Start difference. First operand 1057 states and 4051 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:08,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:08,509 INFO L93 Difference]: Finished difference Result 1982 states and 7121 transitions. [2022-01-28 14:38:08,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:08,509 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:08,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:08,513 INFO L225 Difference]: With dead ends: 1982 [2022-01-28 14:38:08,513 INFO L226 Difference]: Without dead ends: 1793 [2022-01-28 14:38:08,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:08,513 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 102 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:08,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 106 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:08,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1793 states. [2022-01-28 14:38:08,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1793 to 1081. [2022-01-28 14:38:08,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 1080 states have (on average 3.821296296296296) internal successors, (4127), 1080 states have internal predecessors, (4127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:08,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 4127 transitions. [2022-01-28 14:38:08,530 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 4127 transitions. Word has length 25 [2022-01-28 14:38:08,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:08,530 INFO L470 AbstractCegarLoop]: Abstraction has 1081 states and 4127 transitions. [2022-01-28 14:38:08,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:08,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 4127 transitions. [2022-01-28 14:38:08,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:08,532 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:08,532 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:08,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable655 [2022-01-28 14:38:08,532 INFO L402 AbstractCegarLoop]: === Iteration 657 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:08,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:08,532 INFO L85 PathProgramCache]: Analyzing trace with hash 586390677, now seen corresponding path program 652 times [2022-01-28 14:38:08,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:08,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439678203] [2022-01-28 14:38:08,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:08,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:08,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:08,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:08,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:08,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439678203] [2022-01-28 14:38:08,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439678203] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:08,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:08,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:08,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713715696] [2022-01-28 14:38:08,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:08,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:08,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:08,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:08,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:08,657 INFO L87 Difference]: Start difference. First operand 1081 states and 4127 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:08,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:08,759 INFO L93 Difference]: Finished difference Result 1968 states and 7052 transitions. [2022-01-28 14:38:08,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:08,759 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:08,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:08,763 INFO L225 Difference]: With dead ends: 1968 [2022-01-28 14:38:08,763 INFO L226 Difference]: Without dead ends: 1769 [2022-01-28 14:38:08,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:08,763 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 101 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:08,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 105 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:08,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1769 states. [2022-01-28 14:38:08,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1769 to 1057. [2022-01-28 14:38:08,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 1056 states have (on average 3.824810606060606) internal successors, (4039), 1056 states have internal predecessors, (4039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:08,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 4039 transitions. [2022-01-28 14:38:08,779 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 4039 transitions. Word has length 25 [2022-01-28 14:38:08,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:08,779 INFO L470 AbstractCegarLoop]: Abstraction has 1057 states and 4039 transitions. [2022-01-28 14:38:08,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:08,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 4039 transitions. [2022-01-28 14:38:08,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:08,781 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:08,781 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:08,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable656 [2022-01-28 14:38:08,781 INFO L402 AbstractCegarLoop]: === Iteration 658 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:08,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:08,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1012950003, now seen corresponding path program 653 times [2022-01-28 14:38:08,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:08,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540104840] [2022-01-28 14:38:08,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:08,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:08,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:08,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:08,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:08,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540104840] [2022-01-28 14:38:08,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540104840] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:08,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:08,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:08,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914496482] [2022-01-28 14:38:08,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:08,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:08,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:08,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:08,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:08,898 INFO L87 Difference]: Start difference. First operand 1057 states and 4039 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:09,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:09,000 INFO L93 Difference]: Finished difference Result 1978 states and 7099 transitions. [2022-01-28 14:38:09,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:09,000 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:09,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:09,004 INFO L225 Difference]: With dead ends: 1978 [2022-01-28 14:38:09,004 INFO L226 Difference]: Without dead ends: 1791 [2022-01-28 14:38:09,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:09,004 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 112 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:09,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 119 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:09,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2022-01-28 14:38:09,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 1081. [2022-01-28 14:38:09,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 1080 states have (on average 3.810185185185185) internal successors, (4115), 1080 states have internal predecessors, (4115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:09,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 4115 transitions. [2022-01-28 14:38:09,021 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 4115 transitions. Word has length 25 [2022-01-28 14:38:09,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:09,021 INFO L470 AbstractCegarLoop]: Abstraction has 1081 states and 4115 transitions. [2022-01-28 14:38:09,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:09,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 4115 transitions. [2022-01-28 14:38:09,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:09,023 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:09,023 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:09,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable657 [2022-01-28 14:38:09,023 INFO L402 AbstractCegarLoop]: === Iteration 659 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:09,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:09,023 INFO L85 PathProgramCache]: Analyzing trace with hash 806142037, now seen corresponding path program 654 times [2022-01-28 14:38:09,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:09,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16131728] [2022-01-28 14:38:09,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:09,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:09,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:09,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:09,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:09,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16131728] [2022-01-28 14:38:09,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16131728] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:09,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:09,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:09,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085686850] [2022-01-28 14:38:09,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:09,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:09,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:09,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:09,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:09,103 INFO L87 Difference]: Start difference. First operand 1081 states and 4115 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:09,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:09,197 INFO L93 Difference]: Finished difference Result 1966 states and 7035 transitions. [2022-01-28 14:38:09,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:09,197 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:09,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:09,201 INFO L225 Difference]: With dead ends: 1966 [2022-01-28 14:38:09,201 INFO L226 Difference]: Without dead ends: 1755 [2022-01-28 14:38:09,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:09,201 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 117 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:09,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 104 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:09,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1755 states. [2022-01-28 14:38:09,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1755 to 1045. [2022-01-28 14:38:09,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1045 states, 1044 states have (on average 3.832375478927203) internal successors, (4001), 1044 states have internal predecessors, (4001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:09,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 4001 transitions. [2022-01-28 14:38:09,217 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 4001 transitions. Word has length 25 [2022-01-28 14:38:09,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:09,217 INFO L470 AbstractCegarLoop]: Abstraction has 1045 states and 4001 transitions. [2022-01-28 14:38:09,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:09,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 4001 transitions. [2022-01-28 14:38:09,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:09,218 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:09,219 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:09,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable658 [2022-01-28 14:38:09,219 INFO L402 AbstractCegarLoop]: === Iteration 660 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:09,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:09,219 INFO L85 PathProgramCache]: Analyzing trace with hash 92169079, now seen corresponding path program 655 times [2022-01-28 14:38:09,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:09,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698544481] [2022-01-28 14:38:09,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:09,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:09,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:09,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:09,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:09,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698544481] [2022-01-28 14:38:09,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698544481] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:09,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:09,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:09,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77118880] [2022-01-28 14:38:09,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:09,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:09,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:09,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:09,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:09,337 INFO L87 Difference]: Start difference. First operand 1045 states and 4001 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:09,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:09,446 INFO L93 Difference]: Finished difference Result 2066 states and 7395 transitions. [2022-01-28 14:38:09,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:09,446 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:09,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:09,450 INFO L225 Difference]: With dead ends: 2066 [2022-01-28 14:38:09,450 INFO L226 Difference]: Without dead ends: 1877 [2022-01-28 14:38:09,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:09,451 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 104 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:09,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 118 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:09,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1877 states. [2022-01-28 14:38:09,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1877 to 1045. [2022-01-28 14:38:09,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1045 states, 1044 states have (on average 3.803639846743295) internal successors, (3971), 1044 states have internal predecessors, (3971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:09,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 3971 transitions. [2022-01-28 14:38:09,467 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 3971 transitions. Word has length 25 [2022-01-28 14:38:09,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:09,467 INFO L470 AbstractCegarLoop]: Abstraction has 1045 states and 3971 transitions. [2022-01-28 14:38:09,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:09,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 3971 transitions. [2022-01-28 14:38:09,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:09,469 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:09,469 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:09,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable659 [2022-01-28 14:38:09,469 INFO L402 AbstractCegarLoop]: === Iteration 661 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:09,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:09,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1951167915, now seen corresponding path program 656 times [2022-01-28 14:38:09,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:09,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130230669] [2022-01-28 14:38:09,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:09,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:09,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:09,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:09,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:09,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130230669] [2022-01-28 14:38:09,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130230669] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:09,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:09,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:09,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400964475] [2022-01-28 14:38:09,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:09,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:09,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:09,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:09,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:09,560 INFO L87 Difference]: Start difference. First operand 1045 states and 3971 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:09,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:09,652 INFO L93 Difference]: Finished difference Result 2064 states and 7360 transitions. [2022-01-28 14:38:09,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:09,653 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:09,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:09,656 INFO L225 Difference]: With dead ends: 2064 [2022-01-28 14:38:09,656 INFO L226 Difference]: Without dead ends: 1847 [2022-01-28 14:38:09,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:09,656 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 92 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:09,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 123 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:09,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1847 states. [2022-01-28 14:38:09,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1847 to 1015. [2022-01-28 14:38:09,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1015 states, 1014 states have (on average 3.809664694280079) internal successors, (3863), 1014 states have internal predecessors, (3863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:09,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 3863 transitions. [2022-01-28 14:38:09,673 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 3863 transitions. Word has length 25 [2022-01-28 14:38:09,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:09,673 INFO L470 AbstractCegarLoop]: Abstraction has 1015 states and 3863 transitions. [2022-01-28 14:38:09,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:09,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 3863 transitions. [2022-01-28 14:38:09,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:09,674 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:09,674 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:09,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable660 [2022-01-28 14:38:09,674 INFO L402 AbstractCegarLoop]: === Iteration 662 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:09,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:09,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1450421099, now seen corresponding path program 657 times [2022-01-28 14:38:09,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:09,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140610425] [2022-01-28 14:38:09,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:09,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:09,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:09,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:09,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:09,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140610425] [2022-01-28 14:38:09,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140610425] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:09,753 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:09,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:09,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945012635] [2022-01-28 14:38:09,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:09,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:09,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:09,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:09,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:09,753 INFO L87 Difference]: Start difference. First operand 1015 states and 3863 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:09,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:09,836 INFO L93 Difference]: Finished difference Result 2072 states and 7393 transitions. [2022-01-28 14:38:09,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:09,836 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:09,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:09,839 INFO L225 Difference]: With dead ends: 2072 [2022-01-28 14:38:09,839 INFO L226 Difference]: Without dead ends: 1883 [2022-01-28 14:38:09,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:09,839 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 130 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:09,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 117 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:09,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1883 states. [2022-01-28 14:38:09,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1883 to 1078. [2022-01-28 14:38:09,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 1077 states have (on average 3.7790157845868153) internal successors, (4070), 1077 states have internal predecessors, (4070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:09,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 4070 transitions. [2022-01-28 14:38:09,856 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 4070 transitions. Word has length 25 [2022-01-28 14:38:09,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:09,856 INFO L470 AbstractCegarLoop]: Abstraction has 1078 states and 4070 transitions. [2022-01-28 14:38:09,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:09,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 4070 transitions. [2022-01-28 14:38:09,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:09,858 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:09,858 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:09,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable661 [2022-01-28 14:38:09,858 INFO L402 AbstractCegarLoop]: === Iteration 663 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:09,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:09,858 INFO L85 PathProgramCache]: Analyzing trace with hash -2006209387, now seen corresponding path program 658 times [2022-01-28 14:38:09,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:09,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969331033] [2022-01-28 14:38:09,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:09,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:09,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:09,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:09,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:09,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969331033] [2022-01-28 14:38:09,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969331033] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:09,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:09,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:09,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922709781] [2022-01-28 14:38:09,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:09,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:09,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:09,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:09,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:09,941 INFO L87 Difference]: Start difference. First operand 1078 states and 4070 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:10,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:10,037 INFO L93 Difference]: Finished difference Result 1977 states and 7091 transitions. [2022-01-28 14:38:10,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:10,038 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:10,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:10,041 INFO L225 Difference]: With dead ends: 1977 [2022-01-28 14:38:10,041 INFO L226 Difference]: Without dead ends: 1692 [2022-01-28 14:38:10,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:10,041 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 112 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:10,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 100 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:10,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1692 states. [2022-01-28 14:38:10,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1692 to 1015. [2022-01-28 14:38:10,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1015 states, 1014 states have (on average 3.7790927021696255) internal successors, (3832), 1014 states have internal predecessors, (3832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:10,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 3832 transitions. [2022-01-28 14:38:10,057 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 3832 transitions. Word has length 25 [2022-01-28 14:38:10,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:10,057 INFO L470 AbstractCegarLoop]: Abstraction has 1015 states and 3832 transitions. [2022-01-28 14:38:10,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:10,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 3832 transitions. [2022-01-28 14:38:10,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:10,059 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:10,059 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:10,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable662 [2022-01-28 14:38:10,059 INFO L402 AbstractCegarLoop]: === Iteration 664 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:10,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:10,059 INFO L85 PathProgramCache]: Analyzing trace with hash -468073485, now seen corresponding path program 659 times [2022-01-28 14:38:10,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:10,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317781634] [2022-01-28 14:38:10,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:10,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:10,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:10,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:10,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:10,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317781634] [2022-01-28 14:38:10,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317781634] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:10,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:10,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:10,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894553116] [2022-01-28 14:38:10,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:10,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:10,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:10,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:10,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:10,180 INFO L87 Difference]: Start difference. First operand 1015 states and 3832 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:10,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:10,294 INFO L93 Difference]: Finished difference Result 2053 states and 7306 transitions. [2022-01-28 14:38:10,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:10,295 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:10,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:10,298 INFO L225 Difference]: With dead ends: 2053 [2022-01-28 14:38:10,298 INFO L226 Difference]: Without dead ends: 1866 [2022-01-28 14:38:10,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:10,299 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 99 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:10,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 123 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:10,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1866 states. [2022-01-28 14:38:10,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1866 to 1061. [2022-01-28 14:38:10,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 1060 states have (on average 3.763207547169811) internal successors, (3989), 1060 states have internal predecessors, (3989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:10,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 3989 transitions. [2022-01-28 14:38:10,315 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 3989 transitions. Word has length 25 [2022-01-28 14:38:10,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:10,315 INFO L470 AbstractCegarLoop]: Abstraction has 1061 states and 3989 transitions. [2022-01-28 14:38:10,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:10,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 3989 transitions. [2022-01-28 14:38:10,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:10,324 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:10,324 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:10,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable663 [2022-01-28 14:38:10,324 INFO L402 AbstractCegarLoop]: === Iteration 665 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:10,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:10,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1469504213, now seen corresponding path program 660 times [2022-01-28 14:38:10,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:10,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527221125] [2022-01-28 14:38:10,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:10,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:10,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:10,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:10,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527221125] [2022-01-28 14:38:10,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527221125] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:10,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:10,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:10,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161354662] [2022-01-28 14:38:10,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:10,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:10,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:10,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:10,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:10,410 INFO L87 Difference]: Start difference. First operand 1061 states and 3989 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:10,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:10,491 INFO L93 Difference]: Finished difference Result 1960 states and 7010 transitions. [2022-01-28 14:38:10,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:10,491 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:10,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:10,494 INFO L225 Difference]: With dead ends: 1960 [2022-01-28 14:38:10,494 INFO L226 Difference]: Without dead ends: 1653 [2022-01-28 14:38:10,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:10,495 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 103 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:10,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 111 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:10,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2022-01-28 14:38:10,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 976. [2022-01-28 14:38:10,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 975 states have (on average 3.802051282051282) internal successors, (3707), 975 states have internal predecessors, (3707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:10,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 3707 transitions. [2022-01-28 14:38:10,510 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 3707 transitions. Word has length 25 [2022-01-28 14:38:10,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:10,510 INFO L470 AbstractCegarLoop]: Abstraction has 976 states and 3707 transitions. [2022-01-28 14:38:10,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:10,510 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 3707 transitions. [2022-01-28 14:38:10,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:10,511 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:10,511 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:10,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable664 [2022-01-28 14:38:10,511 INFO L402 AbstractCegarLoop]: === Iteration 666 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:10,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:10,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1145126037, now seen corresponding path program 661 times [2022-01-28 14:38:10,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:10,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559684589] [2022-01-28 14:38:10,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:10,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:10,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:10,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:10,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:10,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559684589] [2022-01-28 14:38:10,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559684589] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:10,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:10,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:10,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415253251] [2022-01-28 14:38:10,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:10,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:10,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:10,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:10,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:10,597 INFO L87 Difference]: Start difference. First operand 976 states and 3707 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:10,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:10,684 INFO L93 Difference]: Finished difference Result 1957 states and 6997 transitions. [2022-01-28 14:38:10,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:10,684 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:10,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:10,688 INFO L225 Difference]: With dead ends: 1957 [2022-01-28 14:38:10,688 INFO L226 Difference]: Without dead ends: 1768 [2022-01-28 14:38:10,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:10,688 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 108 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:10,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 108 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:10,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2022-01-28 14:38:10,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 1028. [2022-01-28 14:38:10,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 1027 states have (on average 3.8003894839337877) internal successors, (3903), 1027 states have internal predecessors, (3903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:10,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 3903 transitions. [2022-01-28 14:38:10,704 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 3903 transitions. Word has length 25 [2022-01-28 14:38:10,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:10,704 INFO L470 AbstractCegarLoop]: Abstraction has 1028 states and 3903 transitions. [2022-01-28 14:38:10,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:10,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 3903 transitions. [2022-01-28 14:38:10,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:10,706 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:10,706 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:10,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable665 [2022-01-28 14:38:10,706 INFO L402 AbstractCegarLoop]: === Iteration 667 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:10,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:10,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1700914325, now seen corresponding path program 662 times [2022-01-28 14:38:10,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:10,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78614418] [2022-01-28 14:38:10,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:10,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:10,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:10,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:10,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78614418] [2022-01-28 14:38:10,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78614418] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:10,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:10,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:10,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591191094] [2022-01-28 14:38:10,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:10,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:10,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:10,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:10,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:10,790 INFO L87 Difference]: Start difference. First operand 1028 states and 3903 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:10,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:10,863 INFO L93 Difference]: Finished difference Result 1943 states and 6928 transitions. [2022-01-28 14:38:10,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:10,864 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:10,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:10,867 INFO L225 Difference]: With dead ends: 1943 [2022-01-28 14:38:10,867 INFO L226 Difference]: Without dead ends: 1744 [2022-01-28 14:38:10,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:10,868 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 120 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:10,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 99 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:38:10,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2022-01-28 14:38:10,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 1004. [2022-01-28 14:38:10,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 1003 states have (on average 3.8035892323030907) internal successors, (3815), 1003 states have internal predecessors, (3815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:10,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 3815 transitions. [2022-01-28 14:38:10,883 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 3815 transitions. Word has length 25 [2022-01-28 14:38:10,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:10,884 INFO L470 AbstractCegarLoop]: Abstraction has 1004 states and 3815 transitions. [2022-01-28 14:38:10,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:10,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 3815 transitions. [2022-01-28 14:38:10,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:10,885 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:10,885 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:10,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable666 [2022-01-28 14:38:10,885 INFO L402 AbstractCegarLoop]: === Iteration 668 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:10,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:10,885 INFO L85 PathProgramCache]: Analyzing trace with hash 527602679, now seen corresponding path program 663 times [2022-01-28 14:38:10,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:10,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557348691] [2022-01-28 14:38:10,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:10,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:10,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:10,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:10,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:10,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557348691] [2022-01-28 14:38:10,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557348691] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:10,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:10,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:10,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928373230] [2022-01-28 14:38:10,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:10,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:10,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:10,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:10,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:10,965 INFO L87 Difference]: Start difference. First operand 1004 states and 3815 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:11,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:11,040 INFO L93 Difference]: Finished difference Result 1918 states and 6823 transitions. [2022-01-28 14:38:11,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:11,041 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:11,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:11,044 INFO L225 Difference]: With dead ends: 1918 [2022-01-28 14:38:11,044 INFO L226 Difference]: Without dead ends: 1729 [2022-01-28 14:38:11,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:11,044 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 125 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:11,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 107 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:38:11,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1729 states. [2022-01-28 14:38:11,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1729 to 1067. [2022-01-28 14:38:11,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1067 states, 1066 states have (on average 3.772983114446529) internal successors, (4022), 1066 states have internal predecessors, (4022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:11,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 4022 transitions. [2022-01-28 14:38:11,061 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 4022 transitions. Word has length 25 [2022-01-28 14:38:11,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:11,061 INFO L470 AbstractCegarLoop]: Abstraction has 1067 states and 4022 transitions. [2022-01-28 14:38:11,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:11,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 4022 transitions. [2022-01-28 14:38:11,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:11,063 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:11,063 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:11,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable667 [2022-01-28 14:38:11,063 INFO L402 AbstractCegarLoop]: === Iteration 669 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:11,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:11,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1811104917, now seen corresponding path program 664 times [2022-01-28 14:38:11,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:11,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634605549] [2022-01-28 14:38:11,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:11,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:11,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:11,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:11,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:11,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634605549] [2022-01-28 14:38:11,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634605549] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:11,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:11,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:11,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801162407] [2022-01-28 14:38:11,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:11,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:11,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:11,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:11,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:11,142 INFO L87 Difference]: Start difference. First operand 1067 states and 4022 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:11,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:11,216 INFO L93 Difference]: Finished difference Result 1823 states and 6521 transitions. [2022-01-28 14:38:11,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:11,216 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:11,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:11,219 INFO L225 Difference]: With dead ends: 1823 [2022-01-28 14:38:11,219 INFO L226 Difference]: Without dead ends: 1538 [2022-01-28 14:38:11,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:11,219 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 99 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:11,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 125 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:11,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1538 states. [2022-01-28 14:38:11,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1538 to 1004. [2022-01-28 14:38:11,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 1003 states have (on average 3.7756729810568297) internal successors, (3787), 1003 states have internal predecessors, (3787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:11,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 3787 transitions. [2022-01-28 14:38:11,233 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 3787 transitions. Word has length 25 [2022-01-28 14:38:11,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:11,234 INFO L470 AbstractCegarLoop]: Abstraction has 1004 states and 3787 transitions. [2022-01-28 14:38:11,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:11,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 3787 transitions. [2022-01-28 14:38:11,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:11,235 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:11,235 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:11,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable668 [2022-01-28 14:38:11,235 INFO L402 AbstractCegarLoop]: === Iteration 670 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:11,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:11,235 INFO L85 PathProgramCache]: Analyzing trace with hash 164314261, now seen corresponding path program 665 times [2022-01-28 14:38:11,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:11,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444213231] [2022-01-28 14:38:11,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:11,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:11,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:11,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:11,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:11,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444213231] [2022-01-28 14:38:11,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444213231] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:11,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:11,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:11,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994109957] [2022-01-28 14:38:11,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:11,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:11,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:11,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:11,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:11,382 INFO L87 Difference]: Start difference. First operand 1004 states and 3787 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:11,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:11,510 INFO L93 Difference]: Finished difference Result 1753 states and 6291 transitions. [2022-01-28 14:38:11,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:11,510 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:11,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:11,514 INFO L225 Difference]: With dead ends: 1753 [2022-01-28 14:38:11,514 INFO L226 Difference]: Without dead ends: 1578 [2022-01-28 14:38:11,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:11,514 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 94 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:11,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 121 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:11,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1578 states. [2022-01-28 14:38:11,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1578 to 1044. [2022-01-28 14:38:11,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1044 states, 1043 states have (on average 3.7651006711409396) internal successors, (3927), 1043 states have internal predecessors, (3927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:11,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 3927 transitions. [2022-01-28 14:38:11,532 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 3927 transitions. Word has length 25 [2022-01-28 14:38:11,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:11,532 INFO L470 AbstractCegarLoop]: Abstraction has 1044 states and 3927 transitions. [2022-01-28 14:38:11,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:11,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 3927 transitions. [2022-01-28 14:38:11,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:11,533 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:11,533 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:11,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable669 [2022-01-28 14:38:11,534 INFO L402 AbstractCegarLoop]: === Iteration 671 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:11,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:11,534 INFO L85 PathProgramCache]: Analyzing trace with hash 382665847, now seen corresponding path program 666 times [2022-01-28 14:38:11,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:11,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310956948] [2022-01-28 14:38:11,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:11,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:11,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:11,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:11,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:11,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310956948] [2022-01-28 14:38:11,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310956948] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:11,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:11,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:11,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294762845] [2022-01-28 14:38:11,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:11,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:11,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:11,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:11,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:11,654 INFO L87 Difference]: Start difference. First operand 1044 states and 3927 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:11,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:11,744 INFO L93 Difference]: Finished difference Result 1577 states and 5706 transitions. [2022-01-28 14:38:11,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:11,744 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:11,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:11,747 INFO L225 Difference]: With dead ends: 1577 [2022-01-28 14:38:11,747 INFO L226 Difference]: Without dead ends: 1287 [2022-01-28 14:38:11,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:11,747 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 89 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:11,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 110 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:11,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2022-01-28 14:38:11,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 976. [2022-01-28 14:38:11,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 975 states have (on average 3.787692307692308) internal successors, (3693), 975 states have internal predecessors, (3693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:11,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 3693 transitions. [2022-01-28 14:38:11,761 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 3693 transitions. Word has length 25 [2022-01-28 14:38:11,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:11,761 INFO L470 AbstractCegarLoop]: Abstraction has 976 states and 3693 transitions. [2022-01-28 14:38:11,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:11,761 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 3693 transitions. [2022-01-28 14:38:11,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:11,762 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:11,762 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:11,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable670 [2022-01-28 14:38:11,762 INFO L402 AbstractCegarLoop]: === Iteration 672 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:11,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:11,762 INFO L85 PathProgramCache]: Analyzing trace with hash 2117522547, now seen corresponding path program 667 times [2022-01-28 14:38:11,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:11,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079447823] [2022-01-28 14:38:11,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:11,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:11,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:11,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:11,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:11,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079447823] [2022-01-28 14:38:11,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079447823] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:11,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:11,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:11,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804026761] [2022-01-28 14:38:11,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:11,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:11,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:11,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:11,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:11,877 INFO L87 Difference]: Start difference. First operand 976 states and 3693 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:11,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:11,986 INFO L93 Difference]: Finished difference Result 1928 states and 6894 transitions. [2022-01-28 14:38:11,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:11,986 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:11,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:11,989 INFO L225 Difference]: With dead ends: 1928 [2022-01-28 14:38:11,989 INFO L226 Difference]: Without dead ends: 1741 [2022-01-28 14:38:11,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:11,990 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 104 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:11,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 123 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:11,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states. [2022-01-28 14:38:12,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 1020. [2022-01-28 14:38:12,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1020 states, 1019 states have (on average 3.78900883218842) internal successors, (3861), 1019 states have internal predecessors, (3861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:12,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 3861 transitions. [2022-01-28 14:38:12,007 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 3861 transitions. Word has length 25 [2022-01-28 14:38:12,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:12,007 INFO L470 AbstractCegarLoop]: Abstraction has 1020 states and 3861 transitions. [2022-01-28 14:38:12,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:12,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 3861 transitions. [2022-01-28 14:38:12,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:12,008 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:12,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:12,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable671 [2022-01-28 14:38:12,008 INFO L402 AbstractCegarLoop]: === Iteration 673 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:12,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:12,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1910714581, now seen corresponding path program 668 times [2022-01-28 14:38:12,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:12,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754729791] [2022-01-28 14:38:12,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:12,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:12,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:12,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:12,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754729791] [2022-01-28 14:38:12,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754729791] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:12,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:12,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:12,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025917640] [2022-01-28 14:38:12,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:12,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:12,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:12,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:12,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:12,116 INFO L87 Difference]: Start difference. First operand 1020 states and 3861 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:12,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:12,252 INFO L93 Difference]: Finished difference Result 1916 states and 6830 transitions. [2022-01-28 14:38:12,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:12,252 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:12,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:12,255 INFO L225 Difference]: With dead ends: 1916 [2022-01-28 14:38:12,255 INFO L226 Difference]: Without dead ends: 1717 [2022-01-28 14:38:12,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:12,256 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 91 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:12,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 139 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:12,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1717 states. [2022-01-28 14:38:12,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1717 to 996. [2022-01-28 14:38:12,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 995 states have (on average 3.791959798994975) internal successors, (3773), 995 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:12,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 3773 transitions. [2022-01-28 14:38:12,271 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 3773 transitions. Word has length 25 [2022-01-28 14:38:12,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:12,271 INFO L470 AbstractCegarLoop]: Abstraction has 996 states and 3773 transitions. [2022-01-28 14:38:12,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:12,271 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 3773 transitions. [2022-01-28 14:38:12,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:12,272 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:12,273 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:12,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable672 [2022-01-28 14:38:12,273 INFO L402 AbstractCegarLoop]: === Iteration 674 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:12,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:12,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1499999189, now seen corresponding path program 669 times [2022-01-28 14:38:12,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:12,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418915911] [2022-01-28 14:38:12,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:12,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:12,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:12,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:12,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418915911] [2022-01-28 14:38:12,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418915911] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:12,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:12,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:12,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943762983] [2022-01-28 14:38:12,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:12,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:12,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:12,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:12,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:12,368 INFO L87 Difference]: Start difference. First operand 996 states and 3773 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:12,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:12,462 INFO L93 Difference]: Finished difference Result 1891 states and 6725 transitions. [2022-01-28 14:38:12,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:12,462 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:12,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:12,465 INFO L225 Difference]: With dead ends: 1891 [2022-01-28 14:38:12,465 INFO L226 Difference]: Without dead ends: 1704 [2022-01-28 14:38:12,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:12,465 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 103 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:12,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 119 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:12,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1704 states. [2022-01-28 14:38:12,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1704 to 1042. [2022-01-28 14:38:12,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1042 states, 1041 states have (on average 3.7752161383285303) internal successors, (3930), 1041 states have internal predecessors, (3930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:12,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 3930 transitions. [2022-01-28 14:38:12,481 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 3930 transitions. Word has length 25 [2022-01-28 14:38:12,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:12,481 INFO L470 AbstractCegarLoop]: Abstraction has 1042 states and 3930 transitions. [2022-01-28 14:38:12,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:12,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 3930 transitions. [2022-01-28 14:38:12,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:12,482 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:12,482 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:12,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable673 [2022-01-28 14:38:12,483 INFO L402 AbstractCegarLoop]: === Iteration 675 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:12,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:12,483 INFO L85 PathProgramCache]: Analyzing trace with hash 981900117, now seen corresponding path program 670 times [2022-01-28 14:38:12,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:12,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784481293] [2022-01-28 14:38:12,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:12,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:12,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:12,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:12,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784481293] [2022-01-28 14:38:12,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784481293] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:12,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:12,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:12,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833125623] [2022-01-28 14:38:12,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:12,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:12,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:12,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:12,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:12,584 INFO L87 Difference]: Start difference. First operand 1042 states and 3930 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:12,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:12,667 INFO L93 Difference]: Finished difference Result 1798 states and 6429 transitions. [2022-01-28 14:38:12,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:12,667 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:12,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:12,670 INFO L225 Difference]: With dead ends: 1798 [2022-01-28 14:38:12,670 INFO L226 Difference]: Without dead ends: 1530 [2022-01-28 14:38:12,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:12,670 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 116 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:12,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 120 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:12,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2022-01-28 14:38:12,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 996. [2022-01-28 14:38:12,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 995 states have (on average 3.771859296482412) internal successors, (3753), 995 states have internal predecessors, (3753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:12,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 3753 transitions. [2022-01-28 14:38:12,685 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 3753 transitions. Word has length 25 [2022-01-28 14:38:12,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:12,685 INFO L470 AbstractCegarLoop]: Abstraction has 996 states and 3753 transitions. [2022-01-28 14:38:12,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:12,685 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 3753 transitions. [2022-01-28 14:38:12,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:12,687 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:12,687 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:12,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable674 [2022-01-28 14:38:12,687 INFO L402 AbstractCegarLoop]: === Iteration 676 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:12,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:12,687 INFO L85 PathProgramCache]: Analyzing trace with hash -92924105, now seen corresponding path program 671 times [2022-01-28 14:38:12,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:12,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41198188] [2022-01-28 14:38:12,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:12,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:12,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:12,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:12,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:12,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41198188] [2022-01-28 14:38:12,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41198188] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:12,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:12,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:12,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980151713] [2022-01-28 14:38:12,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:12,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:12,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:12,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:12,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:12,795 INFO L87 Difference]: Start difference. First operand 996 states and 3753 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:12,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:12,868 INFO L93 Difference]: Finished difference Result 1745 states and 6257 transitions. [2022-01-28 14:38:12,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:12,869 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:12,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:12,872 INFO L225 Difference]: With dead ends: 1745 [2022-01-28 14:38:12,872 INFO L226 Difference]: Without dead ends: 1570 [2022-01-28 14:38:12,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:12,872 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 101 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:12,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 110 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:38:12,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2022-01-28 14:38:12,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1036. [2022-01-28 14:38:12,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1036 states, 1035 states have (on average 3.761352657004831) internal successors, (3893), 1035 states have internal predecessors, (3893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:12,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 3893 transitions. [2022-01-28 14:38:12,887 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 3893 transitions. Word has length 25 [2022-01-28 14:38:12,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:12,887 INFO L470 AbstractCegarLoop]: Abstraction has 1036 states and 3893 transitions. [2022-01-28 14:38:12,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:12,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 3893 transitions. [2022-01-28 14:38:12,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:12,889 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:12,889 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:12,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable675 [2022-01-28 14:38:12,889 INFO L402 AbstractCegarLoop]: === Iteration 677 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:12,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:12,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1913959531, now seen corresponding path program 672 times [2022-01-28 14:38:12,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:12,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094825693] [2022-01-28 14:38:12,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:12,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:12,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:12,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:12,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:12,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094825693] [2022-01-28 14:38:12,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094825693] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:12,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:12,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:12,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142876441] [2022-01-28 14:38:12,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:12,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:12,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:12,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:12,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:12,966 INFO L87 Difference]: Start difference. First operand 1036 states and 3893 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:13,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:13,034 INFO L93 Difference]: Finished difference Result 1569 states and 5672 transitions. [2022-01-28 14:38:13,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:13,034 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:13,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:13,037 INFO L225 Difference]: With dead ends: 1569 [2022-01-28 14:38:13,037 INFO L226 Difference]: Without dead ends: 1269 [2022-01-28 14:38:13,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:13,037 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 83 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:13,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 113 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:13,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2022-01-28 14:38:13,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 958. [2022-01-28 14:38:13,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 957 states have (on average 3.806687565308255) internal successors, (3643), 957 states have internal predecessors, (3643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:13,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 3643 transitions. [2022-01-28 14:38:13,053 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 3643 transitions. Word has length 25 [2022-01-28 14:38:13,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:13,053 INFO L470 AbstractCegarLoop]: Abstraction has 958 states and 3643 transitions. [2022-01-28 14:38:13,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:13,053 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 3643 transitions. [2022-01-28 14:38:13,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:13,054 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:13,054 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:13,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable676 [2022-01-28 14:38:13,054 INFO L402 AbstractCegarLoop]: === Iteration 678 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:13,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:13,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1003195149, now seen corresponding path program 673 times [2022-01-28 14:38:13,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:13,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44573552] [2022-01-28 14:38:13,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:13,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:13,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:13,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:13,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44573552] [2022-01-28 14:38:13,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44573552] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:13,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:13,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:13,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115908207] [2022-01-28 14:38:13,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:13,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:13,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:13,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:13,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:13,129 INFO L87 Difference]: Start difference. First operand 958 states and 3643 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:13,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:13,197 INFO L93 Difference]: Finished difference Result 1805 states and 6424 transitions. [2022-01-28 14:38:13,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:13,197 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:13,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:13,200 INFO L225 Difference]: With dead ends: 1805 [2022-01-28 14:38:13,200 INFO L226 Difference]: Without dead ends: 1616 [2022-01-28 14:38:13,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:13,200 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 102 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:13,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 104 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:38:13,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1616 states. [2022-01-28 14:38:13,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1616 to 986. [2022-01-28 14:38:13,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 986 states, 985 states have (on average 3.7878172588832486) internal successors, (3731), 985 states have internal predecessors, (3731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:13,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 3731 transitions. [2022-01-28 14:38:13,215 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 3731 transitions. Word has length 25 [2022-01-28 14:38:13,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:13,215 INFO L470 AbstractCegarLoop]: Abstraction has 986 states and 3731 transitions. [2022-01-28 14:38:13,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:13,215 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 3731 transitions. [2022-01-28 14:38:13,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:13,217 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:13,217 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:13,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable677 [2022-01-28 14:38:13,217 INFO L402 AbstractCegarLoop]: === Iteration 679 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:13,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:13,217 INFO L85 PathProgramCache]: Analyzing trace with hash 189271283, now seen corresponding path program 674 times [2022-01-28 14:38:13,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:13,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969731315] [2022-01-28 14:38:13,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:13,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:13,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:13,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:13,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:13,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969731315] [2022-01-28 14:38:13,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969731315] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:13,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:13,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:13,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418411112] [2022-01-28 14:38:13,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:13,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:13,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:13,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:13,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:13,293 INFO L87 Difference]: Start difference. First operand 986 states and 3731 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:13,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:13,361 INFO L93 Difference]: Finished difference Result 1799 states and 6379 transitions. [2022-01-28 14:38:13,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:13,361 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:13,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:13,364 INFO L225 Difference]: With dead ends: 1799 [2022-01-28 14:38:13,364 INFO L226 Difference]: Without dead ends: 1588 [2022-01-28 14:38:13,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:13,364 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 118 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:13,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 106 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:38:13,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1588 states. [2022-01-28 14:38:13,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1588 to 958. [2022-01-28 14:38:13,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 957 states have (on average 3.794148380355277) internal successors, (3631), 957 states have internal predecessors, (3631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:13,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 3631 transitions. [2022-01-28 14:38:13,378 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 3631 transitions. Word has length 25 [2022-01-28 14:38:13,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:13,378 INFO L470 AbstractCegarLoop]: Abstraction has 958 states and 3631 transitions. [2022-01-28 14:38:13,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:13,379 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 3631 transitions. [2022-01-28 14:38:13,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:13,380 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:13,380 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:13,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable678 [2022-01-28 14:38:13,380 INFO L402 AbstractCegarLoop]: === Iteration 680 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:13,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:13,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1484097195, now seen corresponding path program 675 times [2022-01-28 14:38:13,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:13,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758164165] [2022-01-28 14:38:13,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:13,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:13,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:13,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:13,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:13,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758164165] [2022-01-28 14:38:13,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758164165] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:13,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:13,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:13,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432815047] [2022-01-28 14:38:13,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:13,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:13,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:13,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:13,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:13,457 INFO L87 Difference]: Start difference. First operand 958 states and 3631 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:13,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:13,535 INFO L93 Difference]: Finished difference Result 1793 states and 6368 transitions. [2022-01-28 14:38:13,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:13,535 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:13,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:13,538 INFO L225 Difference]: With dead ends: 1793 [2022-01-28 14:38:13,538 INFO L226 Difference]: Without dead ends: 1604 [2022-01-28 14:38:13,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:13,538 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 111 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:13,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 115 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:13,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2022-01-28 14:38:13,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 982. [2022-01-28 14:38:13,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 981 states have (on average 3.778797145769623) internal successors, (3707), 981 states have internal predecessors, (3707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:13,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 3707 transitions. [2022-01-28 14:38:13,554 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 3707 transitions. Word has length 25 [2022-01-28 14:38:13,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:13,554 INFO L470 AbstractCegarLoop]: Abstraction has 982 states and 3707 transitions. [2022-01-28 14:38:13,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:13,554 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 3707 transitions. [2022-01-28 14:38:13,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:13,556 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:13,556 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:13,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable679 [2022-01-28 14:38:13,556 INFO L402 AbstractCegarLoop]: === Iteration 681 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:13,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:13,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1885220083, now seen corresponding path program 676 times [2022-01-28 14:38:13,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:13,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635192220] [2022-01-28 14:38:13,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:13,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:13,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:13,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:13,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635192220] [2022-01-28 14:38:13,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635192220] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:13,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:13,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:13,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114849520] [2022-01-28 14:38:13,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:13,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:13,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:13,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:13,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:13,650 INFO L87 Difference]: Start difference. First operand 982 states and 3707 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:13,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:13,742 INFO L93 Difference]: Finished difference Result 1779 states and 6299 transitions. [2022-01-28 14:38:13,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:13,743 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:13,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:13,746 INFO L225 Difference]: With dead ends: 1779 [2022-01-28 14:38:13,746 INFO L226 Difference]: Without dead ends: 1580 [2022-01-28 14:38:13,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:13,746 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 112 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:13,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 114 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:13,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2022-01-28 14:38:13,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 958. [2022-01-28 14:38:13,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 957 states have (on average 3.781609195402299) internal successors, (3619), 957 states have internal predecessors, (3619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:13,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 3619 transitions. [2022-01-28 14:38:13,761 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 3619 transitions. Word has length 25 [2022-01-28 14:38:13,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:13,761 INFO L470 AbstractCegarLoop]: Abstraction has 958 states and 3619 transitions. [2022-01-28 14:38:13,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:13,761 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 3619 transitions. [2022-01-28 14:38:13,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:13,762 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:13,762 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:13,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable680 [2022-01-28 14:38:13,762 INFO L402 AbstractCegarLoop]: === Iteration 682 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:13,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:13,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1725871347, now seen corresponding path program 677 times [2022-01-28 14:38:13,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:13,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331663076] [2022-01-28 14:38:13,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:13,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:13,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:13,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:13,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331663076] [2022-01-28 14:38:13,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331663076] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:13,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:13,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:13,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254216379] [2022-01-28 14:38:13,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:13,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:13,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:13,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:13,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:13,836 INFO L87 Difference]: Start difference. First operand 958 states and 3619 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:13,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:13,903 INFO L93 Difference]: Finished difference Result 1781 states and 6322 transitions. [2022-01-28 14:38:13,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:13,903 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:13,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:13,906 INFO L225 Difference]: With dead ends: 1781 [2022-01-28 14:38:13,906 INFO L226 Difference]: Without dead ends: 1598 [2022-01-28 14:38:13,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:13,906 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 122 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:13,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 106 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:38:13,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2022-01-28 14:38:13,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 982. [2022-01-28 14:38:13,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 981 states have (on average 3.7665647298674823) internal successors, (3695), 981 states have internal predecessors, (3695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:13,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 3695 transitions. [2022-01-28 14:38:13,921 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 3695 transitions. Word has length 25 [2022-01-28 14:38:13,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:13,921 INFO L470 AbstractCegarLoop]: Abstraction has 982 states and 3695 transitions. [2022-01-28 14:38:13,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:13,921 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 3695 transitions. [2022-01-28 14:38:13,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:13,923 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:13,923 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:13,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable681 [2022-01-28 14:38:13,923 INFO L402 AbstractCegarLoop]: === Iteration 683 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:13,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:13,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1488033323, now seen corresponding path program 678 times [2022-01-28 14:38:13,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:13,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921939504] [2022-01-28 14:38:13,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:13,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:13,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:13,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:13,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:13,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921939504] [2022-01-28 14:38:13,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921939504] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:13,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:13,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:13,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438975684] [2022-01-28 14:38:13,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:13,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:13,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:13,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:13,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:13,998 INFO L87 Difference]: Start difference. First operand 982 states and 3695 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:14,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:14,070 INFO L93 Difference]: Finished difference Result 1773 states and 6270 transitions. [2022-01-28 14:38:14,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:14,070 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:14,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:14,073 INFO L225 Difference]: With dead ends: 1773 [2022-01-28 14:38:14,073 INFO L226 Difference]: Without dead ends: 1562 [2022-01-28 14:38:14,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:14,073 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 96 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:14,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 105 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:38:14,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2022-01-28 14:38:14,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 946. [2022-01-28 14:38:14,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 945 states have (on average 3.7894179894179896) internal successors, (3581), 945 states have internal predecessors, (3581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:14,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 3581 transitions. [2022-01-28 14:38:14,087 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 3581 transitions. Word has length 25 [2022-01-28 14:38:14,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:14,088 INFO L470 AbstractCegarLoop]: Abstraction has 946 states and 3581 transitions. [2022-01-28 14:38:14,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:14,088 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 3581 transitions. [2022-01-28 14:38:14,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:14,089 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:14,089 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:14,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable682 [2022-01-28 14:38:14,089 INFO L402 AbstractCegarLoop]: === Iteration 684 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:14,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:14,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1737655339, now seen corresponding path program 679 times [2022-01-28 14:38:14,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:14,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188804541] [2022-01-28 14:38:14,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:14,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:14,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:14,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:14,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:14,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188804541] [2022-01-28 14:38:14,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188804541] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:14,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:14,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:14,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057839644] [2022-01-28 14:38:14,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:14,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:14,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:14,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:14,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:14,172 INFO L87 Difference]: Start difference. First operand 946 states and 3581 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:14,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:14,252 INFO L93 Difference]: Finished difference Result 1832 states and 6485 transitions. [2022-01-28 14:38:14,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:14,253 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:14,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:14,256 INFO L225 Difference]: With dead ends: 1832 [2022-01-28 14:38:14,256 INFO L226 Difference]: Without dead ends: 1643 [2022-01-28 14:38:14,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:14,256 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 120 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:14,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 119 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:14,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1643 states. [2022-01-28 14:38:14,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1643 to 946. [2022-01-28 14:38:14,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 945 states have (on average 3.75978835978836) internal successors, (3553), 945 states have internal predecessors, (3553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:14,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 3553 transitions. [2022-01-28 14:38:14,271 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 3553 transitions. Word has length 25 [2022-01-28 14:38:14,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:14,271 INFO L470 AbstractCegarLoop]: Abstraction has 946 states and 3553 transitions. [2022-01-28 14:38:14,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:14,271 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 3553 transitions. [2022-01-28 14:38:14,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:14,272 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:14,272 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:14,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable683 [2022-01-28 14:38:14,272 INFO L402 AbstractCegarLoop]: === Iteration 685 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:14,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:14,273 INFO L85 PathProgramCache]: Analyzing trace with hash -545188907, now seen corresponding path program 680 times [2022-01-28 14:38:14,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:14,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468018974] [2022-01-28 14:38:14,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:14,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:14,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:14,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:14,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468018974] [2022-01-28 14:38:14,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468018974] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:14,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:14,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:14,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830091107] [2022-01-28 14:38:14,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:14,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:14,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:14,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:14,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:14,348 INFO L87 Difference]: Start difference. First operand 946 states and 3553 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:14,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:14,422 INFO L93 Difference]: Finished difference Result 1826 states and 6440 transitions. [2022-01-28 14:38:14,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:14,422 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:14,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:14,425 INFO L225 Difference]: With dead ends: 1826 [2022-01-28 14:38:14,425 INFO L226 Difference]: Without dead ends: 1615 [2022-01-28 14:38:14,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:14,426 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 106 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:14,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 107 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:38:14,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1615 states. [2022-01-28 14:38:14,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1615 to 918. [2022-01-28 14:38:14,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 917 states have (on average 3.763358778625954) internal successors, (3451), 917 states have internal predecessors, (3451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:14,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 3451 transitions. [2022-01-28 14:38:14,440 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 3451 transitions. Word has length 25 [2022-01-28 14:38:14,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:14,441 INFO L470 AbstractCegarLoop]: Abstraction has 918 states and 3451 transitions. [2022-01-28 14:38:14,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:14,441 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 3451 transitions. [2022-01-28 14:38:14,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:14,442 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:14,442 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:14,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable684 [2022-01-28 14:38:14,442 INFO L402 AbstractCegarLoop]: === Iteration 686 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:14,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:14,442 INFO L85 PathProgramCache]: Analyzing trace with hash -721599531, now seen corresponding path program 681 times [2022-01-28 14:38:14,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:14,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325722735] [2022-01-28 14:38:14,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:14,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:14,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:14,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:14,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:14,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325722735] [2022-01-28 14:38:14,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325722735] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:14,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:14,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:14,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027852387] [2022-01-28 14:38:14,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:14,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:14,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:14,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:14,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:14,532 INFO L87 Difference]: Start difference. First operand 918 states and 3451 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:14,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:14,608 INFO L93 Difference]: Finished difference Result 1844 states and 6503 transitions. [2022-01-28 14:38:14,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:14,608 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:14,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:14,611 INFO L225 Difference]: With dead ends: 1844 [2022-01-28 14:38:14,611 INFO L226 Difference]: Without dead ends: 1655 [2022-01-28 14:38:14,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:14,611 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 125 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:14,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 120 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:14,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1655 states. [2022-01-28 14:38:14,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1655 to 981. [2022-01-28 14:38:14,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 980 states have (on average 3.73265306122449) internal successors, (3658), 980 states have internal predecessors, (3658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:14,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 3658 transitions. [2022-01-28 14:38:14,627 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 3658 transitions. Word has length 25 [2022-01-28 14:38:14,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:14,628 INFO L470 AbstractCegarLoop]: Abstraction has 981 states and 3658 transitions. [2022-01-28 14:38:14,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:14,628 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 3658 transitions. [2022-01-28 14:38:14,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:14,629 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:14,630 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:14,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable685 [2022-01-28 14:38:14,630 INFO L402 AbstractCegarLoop]: === Iteration 687 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:14,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:14,630 INFO L85 PathProgramCache]: Analyzing trace with hash -707379981, now seen corresponding path program 682 times [2022-01-28 14:38:14,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:14,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813534501] [2022-01-28 14:38:14,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:14,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:14,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:14,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:14,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:14,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813534501] [2022-01-28 14:38:14,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813534501] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:14,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:14,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:14,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928301815] [2022-01-28 14:38:14,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:14,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:14,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:14,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:14,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:14,712 INFO L87 Difference]: Start difference. First operand 981 states and 3658 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:14,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:14,778 INFO L93 Difference]: Finished difference Result 1749 states and 6201 transitions. [2022-01-28 14:38:14,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:14,778 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:14,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:14,780 INFO L225 Difference]: With dead ends: 1749 [2022-01-28 14:38:14,781 INFO L226 Difference]: Without dead ends: 1464 [2022-01-28 14:38:14,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:14,781 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 109 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:14,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 103 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:38:14,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2022-01-28 14:38:14,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 918. [2022-01-28 14:38:14,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 917 states have (on average 3.7306434023991275) internal successors, (3421), 917 states have internal predecessors, (3421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:14,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 3421 transitions. [2022-01-28 14:38:14,795 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 3421 transitions. Word has length 25 [2022-01-28 14:38:14,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:14,795 INFO L470 AbstractCegarLoop]: Abstraction has 918 states and 3421 transitions. [2022-01-28 14:38:14,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:14,795 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 3421 transitions. [2022-01-28 14:38:14,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:14,796 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:14,796 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:14,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable686 [2022-01-28 14:38:14,796 INFO L402 AbstractCegarLoop]: === Iteration 688 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:14,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:14,797 INFO L85 PathProgramCache]: Analyzing trace with hash 244847859, now seen corresponding path program 683 times [2022-01-28 14:38:14,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:14,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77309200] [2022-01-28 14:38:14,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:14,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:14,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:14,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:14,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77309200] [2022-01-28 14:38:14,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77309200] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:14,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:14,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:14,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836373474] [2022-01-28 14:38:14,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:14,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:14,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:14,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:14,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:14,875 INFO L87 Difference]: Start difference. First operand 918 states and 3421 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:14,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:14,944 INFO L93 Difference]: Finished difference Result 1819 states and 6398 transitions. [2022-01-28 14:38:14,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:14,944 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:14,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:14,947 INFO L225 Difference]: With dead ends: 1819 [2022-01-28 14:38:14,947 INFO L226 Difference]: Without dead ends: 1636 [2022-01-28 14:38:14,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:14,948 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 126 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:14,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 102 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:38:14,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2022-01-28 14:38:14,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 962. [2022-01-28 14:38:14,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 962 states, 961 states have (on average 3.718002081165453) internal successors, (3573), 961 states have internal predecessors, (3573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:14,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 3573 transitions. [2022-01-28 14:38:14,963 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 3573 transitions. Word has length 25 [2022-01-28 14:38:14,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:14,963 INFO L470 AbstractCegarLoop]: Abstraction has 962 states and 3573 transitions. [2022-01-28 14:38:14,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:14,963 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 3573 transitions. [2022-01-28 14:38:14,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:14,964 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:14,964 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:14,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable687 [2022-01-28 14:38:14,965 INFO L402 AbstractCegarLoop]: === Iteration 689 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:14,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:14,965 INFO L85 PathProgramCache]: Analyzing trace with hash -824671147, now seen corresponding path program 684 times [2022-01-28 14:38:14,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:14,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951023185] [2022-01-28 14:38:14,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:14,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:15,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:15,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:15,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951023185] [2022-01-28 14:38:15,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951023185] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:15,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:15,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:15,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947995033] [2022-01-28 14:38:15,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:15,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:15,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:15,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:15,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:15,051 INFO L87 Difference]: Start difference. First operand 962 states and 3573 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:15,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:15,117 INFO L93 Difference]: Finished difference Result 1730 states and 6116 transitions. [2022-01-28 14:38:15,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:15,117 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:15,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:15,120 INFO L225 Difference]: With dead ends: 1730 [2022-01-28 14:38:15,120 INFO L226 Difference]: Without dead ends: 1434 [2022-01-28 14:38:15,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:15,120 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 114 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:15,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 107 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:38:15,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2022-01-28 14:38:15,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 888. [2022-01-28 14:38:15,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 888 states, 887 states have (on average 3.745208568207441) internal successors, (3322), 887 states have internal predecessors, (3322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:15,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 3322 transitions. [2022-01-28 14:38:15,145 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 3322 transitions. Word has length 25 [2022-01-28 14:38:15,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:15,146 INFO L470 AbstractCegarLoop]: Abstraction has 888 states and 3322 transitions. [2022-01-28 14:38:15,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:15,146 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 3322 transitions. [2022-01-28 14:38:15,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:15,147 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:15,163 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:15,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable688 [2022-01-28 14:38:15,163 INFO L402 AbstractCegarLoop]: === Iteration 690 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:15,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:15,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1767925687, now seen corresponding path program 685 times [2022-01-28 14:38:15,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:15,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262055425] [2022-01-28 14:38:15,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:15,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:15,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:15,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:15,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:15,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262055425] [2022-01-28 14:38:15,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262055425] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:15,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:15,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:15,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82839407] [2022-01-28 14:38:15,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:15,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:15,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:15,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:15,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:15,253 INFO L87 Difference]: Start difference. First operand 888 states and 3322 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:15,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:15,328 INFO L93 Difference]: Finished difference Result 1692 states and 5933 transitions. [2022-01-28 14:38:15,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:15,329 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:15,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:15,332 INFO L225 Difference]: With dead ends: 1692 [2022-01-28 14:38:15,332 INFO L226 Difference]: Without dead ends: 1503 [2022-01-28 14:38:15,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:15,333 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 118 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:15,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 97 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:38:15,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1503 states. [2022-01-28 14:38:15,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1503 to 888. [2022-01-28 14:38:15,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 888 states, 887 states have (on average 3.7181510710259302) internal successors, (3298), 887 states have internal predecessors, (3298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:15,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 3298 transitions. [2022-01-28 14:38:15,352 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 3298 transitions. Word has length 25 [2022-01-28 14:38:15,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:15,352 INFO L470 AbstractCegarLoop]: Abstraction has 888 states and 3298 transitions. [2022-01-28 14:38:15,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:15,352 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 3298 transitions. [2022-01-28 14:38:15,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:15,367 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:15,367 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:15,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable689 [2022-01-28 14:38:15,367 INFO L402 AbstractCegarLoop]: === Iteration 691 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:15,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:15,368 INFO L85 PathProgramCache]: Analyzing trace with hash 842275669, now seen corresponding path program 686 times [2022-01-28 14:38:15,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:15,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704480005] [2022-01-28 14:38:15,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:15,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:15,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:15,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:15,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704480005] [2022-01-28 14:38:15,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704480005] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:15,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:15,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:15,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411182414] [2022-01-28 14:38:15,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:15,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:15,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:15,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:15,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:15,447 INFO L87 Difference]: Start difference. First operand 888 states and 3298 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:15,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:15,520 INFO L93 Difference]: Finished difference Result 1678 states and 5864 transitions. [2022-01-28 14:38:15,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:15,521 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:15,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:15,523 INFO L225 Difference]: With dead ends: 1678 [2022-01-28 14:38:15,523 INFO L226 Difference]: Without dead ends: 1479 [2022-01-28 14:38:15,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:15,523 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 104 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:15,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 115 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:15,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2022-01-28 14:38:15,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 864. [2022-01-28 14:38:15,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 863 states have (on average 3.719582850521437) internal successors, (3210), 863 states have internal predecessors, (3210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:15,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 3210 transitions. [2022-01-28 14:38:15,536 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 3210 transitions. Word has length 25 [2022-01-28 14:38:15,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:15,536 INFO L470 AbstractCegarLoop]: Abstraction has 864 states and 3210 transitions. [2022-01-28 14:38:15,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:15,536 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 3210 transitions. [2022-01-28 14:38:15,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:15,538 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:15,538 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:15,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable690 [2022-01-28 14:38:15,538 INFO L402 AbstractCegarLoop]: === Iteration 692 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:15,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:15,538 INFO L85 PathProgramCache]: Analyzing trace with hash -195429227, now seen corresponding path program 687 times [2022-01-28 14:38:15,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:15,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263242925] [2022-01-28 14:38:15,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:15,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:15,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:15,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:15,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:15,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263242925] [2022-01-28 14:38:15,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263242925] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:15,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:15,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:15,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983445321] [2022-01-28 14:38:15,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:15,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:15,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:15,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:15,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:15,621 INFO L87 Difference]: Start difference. First operand 864 states and 3210 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:15,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:15,694 INFO L93 Difference]: Finished difference Result 1653 states and 5759 transitions. [2022-01-28 14:38:15,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:15,694 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:15,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:15,696 INFO L225 Difference]: With dead ends: 1653 [2022-01-28 14:38:15,696 INFO L226 Difference]: Without dead ends: 1464 [2022-01-28 14:38:15,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:15,696 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 129 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:15,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 104 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:38:15,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2022-01-28 14:38:15,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 802. [2022-01-28 14:38:15,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 801 states have (on average 3.6928838951310863) internal successors, (2958), 801 states have internal predecessors, (2958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:15,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 2958 transitions. [2022-01-28 14:38:15,709 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 2958 transitions. Word has length 25 [2022-01-28 14:38:15,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:15,709 INFO L470 AbstractCegarLoop]: Abstraction has 802 states and 2958 transitions. [2022-01-28 14:38:15,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:15,709 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 2958 transitions. [2022-01-28 14:38:15,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:15,710 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:15,710 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:15,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable691 [2022-01-28 14:38:15,710 INFO L402 AbstractCegarLoop]: === Iteration 693 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:15,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:15,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1002221781, now seen corresponding path program 688 times [2022-01-28 14:38:15,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:15,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672595587] [2022-01-28 14:38:15,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:15,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:15,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:15,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:15,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672595587] [2022-01-28 14:38:15,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672595587] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:15,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:15,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:15,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560510668] [2022-01-28 14:38:15,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:15,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:15,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:15,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:15,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:15,789 INFO L87 Difference]: Start difference. First operand 802 states and 2958 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:15,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:15,875 INFO L93 Difference]: Finished difference Result 1558 states and 5457 transitions. [2022-01-28 14:38:15,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:15,876 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:15,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:15,879 INFO L225 Difference]: With dead ends: 1558 [2022-01-28 14:38:15,879 INFO L226 Difference]: Without dead ends: 1273 [2022-01-28 14:38:15,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:15,879 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 100 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:15,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 110 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:15,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2022-01-28 14:38:15,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 739. [2022-01-28 14:38:15,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 739 states, 738 states have (on average 3.68970189701897) internal successors, (2723), 738 states have internal predecessors, (2723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:15,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 2723 transitions. [2022-01-28 14:38:15,890 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 2723 transitions. Word has length 25 [2022-01-28 14:38:15,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:15,890 INFO L470 AbstractCegarLoop]: Abstraction has 739 states and 2723 transitions. [2022-01-28 14:38:15,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:15,891 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 2723 transitions. [2022-01-28 14:38:15,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:15,892 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:15,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:15,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable692 [2022-01-28 14:38:15,892 INFO L402 AbstractCegarLoop]: === Iteration 694 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:15,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:15,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1622361331, now seen corresponding path program 689 times [2022-01-28 14:38:15,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:15,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936164987] [2022-01-28 14:38:15,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:15,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:15,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:15,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:15,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:15,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936164987] [2022-01-28 14:38:15,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936164987] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:15,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:15,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:15,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111056758] [2022-01-28 14:38:15,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:15,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:15,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:15,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:15,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:15,977 INFO L87 Difference]: Start difference. First operand 739 states and 2723 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:16,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:16,051 INFO L93 Difference]: Finished difference Result 1488 states and 5227 transitions. [2022-01-28 14:38:16,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:16,052 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:16,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:16,054 INFO L225 Difference]: With dead ends: 1488 [2022-01-28 14:38:16,055 INFO L226 Difference]: Without dead ends: 1313 [2022-01-28 14:38:16,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:16,055 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 112 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:16,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 104 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:38:16,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2022-01-28 14:38:16,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 779. [2022-01-28 14:38:16,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 778 states have (on average 3.6799485861182517) internal successors, (2863), 778 states have internal predecessors, (2863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:16,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 2863 transitions. [2022-01-28 14:38:16,071 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 2863 transitions. Word has length 25 [2022-01-28 14:38:16,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:16,071 INFO L470 AbstractCegarLoop]: Abstraction has 779 states and 2863 transitions. [2022-01-28 14:38:16,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:16,071 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 2863 transitions. [2022-01-28 14:38:16,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:16,072 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:16,072 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:16,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable693 [2022-01-28 14:38:16,072 INFO L402 AbstractCegarLoop]: === Iteration 695 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:16,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:16,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1840712917, now seen corresponding path program 690 times [2022-01-28 14:38:16,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:16,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2262516] [2022-01-28 14:38:16,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:16,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:16,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:16,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:16,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:16,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2262516] [2022-01-28 14:38:16,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2262516] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:16,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:16,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:16,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811394246] [2022-01-28 14:38:16,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:16,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:16,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:16,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:16,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:16,153 INFO L87 Difference]: Start difference. First operand 779 states and 2863 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:16,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:16,236 INFO L93 Difference]: Finished difference Result 1312 states and 4642 transitions. [2022-01-28 14:38:16,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:16,236 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:16,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:16,239 INFO L225 Difference]: With dead ends: 1312 [2022-01-28 14:38:16,239 INFO L226 Difference]: Without dead ends: 1022 [2022-01-28 14:38:16,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:16,239 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 98 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:16,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 110 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:16,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2022-01-28 14:38:16,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 711. [2022-01-28 14:38:16,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 710 states have (on average 3.702816901408451) internal successors, (2629), 710 states have internal predecessors, (2629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:16,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 2629 transitions. [2022-01-28 14:38:16,249 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 2629 transitions. Word has length 25 [2022-01-28 14:38:16,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:16,249 INFO L470 AbstractCegarLoop]: Abstraction has 711 states and 2629 transitions. [2022-01-28 14:38:16,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:16,249 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 2629 transitions. [2022-01-28 14:38:16,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:16,250 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:16,250 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:16,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable694 [2022-01-28 14:38:16,250 INFO L402 AbstractCegarLoop]: === Iteration 696 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:16,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:16,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1773007629, now seen corresponding path program 691 times [2022-01-28 14:38:16,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:16,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366410799] [2022-01-28 14:38:16,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:16,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:16,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:16,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:16,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:16,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366410799] [2022-01-28 14:38:16,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366410799] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:16,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:16,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:16,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138720126] [2022-01-28 14:38:16,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:16,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:16,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:16,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:16,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:16,373 INFO L87 Difference]: Start difference. First operand 711 states and 2629 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:16,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:16,468 INFO L93 Difference]: Finished difference Result 1477 states and 5238 transitions. [2022-01-28 14:38:16,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:16,468 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:16,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:16,471 INFO L225 Difference]: With dead ends: 1477 [2022-01-28 14:38:16,471 INFO L226 Difference]: Without dead ends: 1294 [2022-01-28 14:38:16,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:16,471 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 114 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:16,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 99 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:16,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2022-01-28 14:38:16,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 755. [2022-01-28 14:38:16,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 754 states have (on average 3.7095490716180373) internal successors, (2797), 754 states have internal predecessors, (2797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:16,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 2797 transitions. [2022-01-28 14:38:16,483 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 2797 transitions. Word has length 25 [2022-01-28 14:38:16,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:16,483 INFO L470 AbstractCegarLoop]: Abstraction has 755 states and 2797 transitions. [2022-01-28 14:38:16,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:16,483 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 2797 transitions. [2022-01-28 14:38:16,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:16,484 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:16,484 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:16,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable695 [2022-01-28 14:38:16,484 INFO L402 AbstractCegarLoop]: === Iteration 697 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:16,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:16,484 INFO L85 PathProgramCache]: Analyzing trace with hash -691945003, now seen corresponding path program 692 times [2022-01-28 14:38:16,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:16,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064761374] [2022-01-28 14:38:16,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:16,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:16,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:16,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:16,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:16,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064761374] [2022-01-28 14:38:16,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064761374] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:16,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:16,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:16,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769877665] [2022-01-28 14:38:16,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:16,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:16,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:16,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:16,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:16,567 INFO L87 Difference]: Start difference. First operand 755 states and 2797 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:16,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:16,650 INFO L93 Difference]: Finished difference Result 1469 states and 5186 transitions. [2022-01-28 14:38:16,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:16,651 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:16,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:16,653 INFO L225 Difference]: With dead ends: 1469 [2022-01-28 14:38:16,653 INFO L226 Difference]: Without dead ends: 1270 [2022-01-28 14:38:16,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:16,653 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 103 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:16,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 109 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:16,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2022-01-28 14:38:16,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 731. [2022-01-28 14:38:16,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 730 states have (on average 3.710958904109589) internal successors, (2709), 730 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:16,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 2709 transitions. [2022-01-28 14:38:16,664 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 2709 transitions. Word has length 25 [2022-01-28 14:38:16,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:16,664 INFO L470 AbstractCegarLoop]: Abstraction has 731 states and 2709 transitions. [2022-01-28 14:38:16,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:16,664 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 2709 transitions. [2022-01-28 14:38:16,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:16,665 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:16,665 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:16,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable696 [2022-01-28 14:38:16,665 INFO L402 AbstractCegarLoop]: === Iteration 698 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:16,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:16,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1904436309, now seen corresponding path program 693 times [2022-01-28 14:38:16,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:16,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540699611] [2022-01-28 14:38:16,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:16,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:16,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:16,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:16,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:16,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540699611] [2022-01-28 14:38:16,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540699611] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:16,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:16,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:16,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532633393] [2022-01-28 14:38:16,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:16,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:16,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:16,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:16,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:16,821 INFO L87 Difference]: Start difference. First operand 731 states and 2709 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:16,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:16,932 INFO L93 Difference]: Finished difference Result 1397 states and 4922 transitions. [2022-01-28 14:38:16,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:16,933 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:16,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:16,935 INFO L225 Difference]: With dead ends: 1397 [2022-01-28 14:38:16,935 INFO L226 Difference]: Without dead ends: 1214 [2022-01-28 14:38:16,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:16,935 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 96 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:16,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 110 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:16,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1214 states. [2022-01-28 14:38:16,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1214 to 775. [2022-01-28 14:38:16,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 774 states have (on average 3.6963824289405687) internal successors, (2861), 774 states have internal predecessors, (2861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:16,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 2861 transitions. [2022-01-28 14:38:16,947 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 2861 transitions. Word has length 25 [2022-01-28 14:38:16,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:16,947 INFO L470 AbstractCegarLoop]: Abstraction has 775 states and 2861 transitions. [2022-01-28 14:38:16,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:16,947 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 2861 transitions. [2022-01-28 14:38:16,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:16,948 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:16,948 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:16,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable697 [2022-01-28 14:38:16,948 INFO L402 AbstractCegarLoop]: === Iteration 699 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:16,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:16,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1620759467, now seen corresponding path program 694 times [2022-01-28 14:38:16,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:16,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965723293] [2022-01-28 14:38:16,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:16,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:16,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:17,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:17,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:17,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965723293] [2022-01-28 14:38:17,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965723293] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:17,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:17,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:17,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45438207] [2022-01-28 14:38:17,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:17,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:17,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:17,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:17,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:17,100 INFO L87 Difference]: Start difference. First operand 775 states and 2861 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:17,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:17,188 INFO L93 Difference]: Finished difference Result 1308 states and 4640 transitions. [2022-01-28 14:38:17,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:17,188 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:17,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:17,190 INFO L225 Difference]: With dead ends: 1308 [2022-01-28 14:38:17,190 INFO L226 Difference]: Without dead ends: 1042 [2022-01-28 14:38:17,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:17,190 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 90 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:17,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 116 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:17,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2022-01-28 14:38:17,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 731. [2022-01-28 14:38:17,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 730 states have (on average 3.6835616438356165) internal successors, (2689), 730 states have internal predecessors, (2689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:17,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 2689 transitions. [2022-01-28 14:38:17,200 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 2689 transitions. Word has length 25 [2022-01-28 14:38:17,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:17,200 INFO L470 AbstractCegarLoop]: Abstraction has 731 states and 2689 transitions. [2022-01-28 14:38:17,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:17,200 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 2689 transitions. [2022-01-28 14:38:17,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:17,201 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:17,201 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:17,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable698 [2022-01-28 14:38:17,201 INFO L402 AbstractCegarLoop]: === Iteration 700 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:17,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:17,202 INFO L85 PathProgramCache]: Analyzing trace with hash -2002526025, now seen corresponding path program 695 times [2022-01-28 14:38:17,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:17,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899619817] [2022-01-28 14:38:17,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:17,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:17,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:17,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:17,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:17,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899619817] [2022-01-28 14:38:17,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899619817] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:17,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:17,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:17,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402613486] [2022-01-28 14:38:17,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:17,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:17,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:17,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:17,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:17,279 INFO L87 Difference]: Start difference. First operand 731 states and 2689 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:17,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:17,342 INFO L93 Difference]: Finished difference Result 1169 states and 4133 transitions. [2022-01-28 14:38:17,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:17,342 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:17,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:17,343 INFO L225 Difference]: With dead ends: 1169 [2022-01-28 14:38:17,343 INFO L226 Difference]: Without dead ends: 994 [2022-01-28 14:38:17,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:17,344 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 102 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:17,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 91 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:38:17,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2022-01-28 14:38:17,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 771. [2022-01-28 14:38:17,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 770 states have (on average 3.674025974025974) internal successors, (2829), 770 states have internal predecessors, (2829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:17,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 2829 transitions. [2022-01-28 14:38:17,353 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 2829 transitions. Word has length 25 [2022-01-28 14:38:17,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:17,354 INFO L470 AbstractCegarLoop]: Abstraction has 771 states and 2829 transitions. [2022-01-28 14:38:17,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:17,354 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 2829 transitions. [2022-01-28 14:38:17,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:17,355 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:17,355 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:17,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable699 [2022-01-28 14:38:17,355 INFO L402 AbstractCegarLoop]: === Iteration 701 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:17,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:17,355 INFO L85 PathProgramCache]: Analyzing trace with hash 471405845, now seen corresponding path program 696 times [2022-01-28 14:38:17,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:17,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831045988] [2022-01-28 14:38:17,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:17,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:17,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:17,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:17,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:17,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831045988] [2022-01-28 14:38:17,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831045988] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:17,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:17,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:17,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863175297] [2022-01-28 14:38:17,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:17,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:17,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:17,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:17,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:17,457 INFO L87 Difference]: Start difference. First operand 771 states and 2829 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:17,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:17,550 INFO L93 Difference]: Finished difference Result 993 states and 3548 transitions. [2022-01-28 14:38:17,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:17,550 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:17,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:17,551 INFO L225 Difference]: With dead ends: 993 [2022-01-28 14:38:17,551 INFO L226 Difference]: Without dead ends: 697 [2022-01-28 14:38:17,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:17,551 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 69 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:17,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 121 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:17,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2022-01-28 14:38:17,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 697. [2022-01-28 14:38:17,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 696 states have (on average 3.7198275862068964) internal successors, (2589), 696 states have internal predecessors, (2589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:17,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 2589 transitions. [2022-01-28 14:38:17,560 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 2589 transitions. Word has length 25 [2022-01-28 14:38:17,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:17,560 INFO L470 AbstractCegarLoop]: Abstraction has 697 states and 2589 transitions. [2022-01-28 14:38:17,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:17,560 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 2589 transitions. [2022-01-28 14:38:17,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:17,561 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:17,561 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:17,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable700 [2022-01-28 14:38:17,561 INFO L402 AbstractCegarLoop]: === Iteration 702 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:17,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:17,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1003874991, now seen corresponding path program 697 times [2022-01-28 14:38:17,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:17,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770882582] [2022-01-28 14:38:17,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:17,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:17,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:17,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:17,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770882582] [2022-01-28 14:38:17,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770882582] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:17,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:17,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:17,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765323512] [2022-01-28 14:38:17,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:17,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:17,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:17,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:17,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:17,636 INFO L87 Difference]: Start difference. First operand 697 states and 2589 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:17,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:17,720 INFO L93 Difference]: Finished difference Result 1284 states and 4495 transitions. [2022-01-28 14:38:17,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:17,720 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:17,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:17,722 INFO L225 Difference]: With dead ends: 1284 [2022-01-28 14:38:17,722 INFO L226 Difference]: Without dead ends: 1097 [2022-01-28 14:38:17,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:17,722 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 99 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:17,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 105 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:17,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2022-01-28 14:38:17,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 725. [2022-01-28 14:38:17,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 724 states have (on average 3.697513812154696) internal successors, (2677), 724 states have internal predecessors, (2677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:17,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 2677 transitions. [2022-01-28 14:38:17,732 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 2677 transitions. Word has length 25 [2022-01-28 14:38:17,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:17,732 INFO L470 AbstractCegarLoop]: Abstraction has 725 states and 2677 transitions. [2022-01-28 14:38:17,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:17,732 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 2677 transitions. [2022-01-28 14:38:17,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:17,733 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:17,733 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:17,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable701 [2022-01-28 14:38:17,734 INFO L402 AbstractCegarLoop]: === Iteration 703 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:17,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:17,734 INFO L85 PathProgramCache]: Analyzing trace with hash 77187635, now seen corresponding path program 698 times [2022-01-28 14:38:17,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:17,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724728293] [2022-01-28 14:38:17,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:17,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:17,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:17,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:17,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724728293] [2022-01-28 14:38:17,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724728293] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:17,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:17,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:17,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218243403] [2022-01-28 14:38:17,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:17,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:17,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:17,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:17,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:17,810 INFO L87 Difference]: Start difference. First operand 725 states and 2677 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:17,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:17,873 INFO L93 Difference]: Finished difference Result 1280 states and 4455 transitions. [2022-01-28 14:38:17,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:17,874 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:17,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:17,875 INFO L225 Difference]: With dead ends: 1280 [2022-01-28 14:38:17,875 INFO L226 Difference]: Without dead ends: 1069 [2022-01-28 14:38:17,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:17,876 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 101 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:17,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 91 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:38:17,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2022-01-28 14:38:17,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 697. [2022-01-28 14:38:17,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 696 states have (on average 3.7025862068965516) internal successors, (2577), 696 states have internal predecessors, (2577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:17,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 2577 transitions. [2022-01-28 14:38:17,885 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 2577 transitions. Word has length 25 [2022-01-28 14:38:17,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:17,885 INFO L470 AbstractCegarLoop]: Abstraction has 697 states and 2577 transitions. [2022-01-28 14:38:17,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:17,885 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 2577 transitions. [2022-01-28 14:38:17,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:17,886 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:17,886 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:17,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable702 [2022-01-28 14:38:17,886 INFO L402 AbstractCegarLoop]: === Iteration 704 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:17,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:17,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1484777037, now seen corresponding path program 699 times [2022-01-28 14:38:17,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:17,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284261538] [2022-01-28 14:38:17,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:17,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:17,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:17,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:17,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:17,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284261538] [2022-01-28 14:38:17,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284261538] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:17,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:17,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:17,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105570018] [2022-01-28 14:38:17,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:17,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:17,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:17,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:17,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:17,971 INFO L87 Difference]: Start difference. First operand 697 states and 2577 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:18,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:18,070 INFO L93 Difference]: Finished difference Result 1272 states and 4439 transitions. [2022-01-28 14:38:18,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:18,070 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:18,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:18,073 INFO L225 Difference]: With dead ends: 1272 [2022-01-28 14:38:18,073 INFO L226 Difference]: Without dead ends: 1085 [2022-01-28 14:38:18,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:18,073 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 98 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:18,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 85 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:18,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2022-01-28 14:38:18,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 721. [2022-01-28 14:38:18,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 720 states have (on average 3.6847222222222222) internal successors, (2653), 720 states have internal predecessors, (2653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:18,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 2653 transitions. [2022-01-28 14:38:18,084 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 2653 transitions. Word has length 25 [2022-01-28 14:38:18,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:18,084 INFO L470 AbstractCegarLoop]: Abstraction has 721 states and 2653 transitions. [2022-01-28 14:38:18,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:18,084 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 2653 transitions. [2022-01-28 14:38:18,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:18,085 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:18,085 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:18,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable703 [2022-01-28 14:38:18,085 INFO L402 AbstractCegarLoop]: === Iteration 705 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:18,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:18,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1121943987, now seen corresponding path program 700 times [2022-01-28 14:38:18,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:18,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132174428] [2022-01-28 14:38:18,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:18,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:18,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:18,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:18,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:18,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132174428] [2022-01-28 14:38:18,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132174428] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:18,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:18,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:18,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186543425] [2022-01-28 14:38:18,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:18,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:18,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:18,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:18,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:18,219 INFO L87 Difference]: Start difference. First operand 721 states and 2653 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:18,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:18,324 INFO L93 Difference]: Finished difference Result 1260 states and 4375 transitions. [2022-01-28 14:38:18,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:18,325 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:18,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:18,327 INFO L225 Difference]: With dead ends: 1260 [2022-01-28 14:38:18,327 INFO L226 Difference]: Without dead ends: 1061 [2022-01-28 14:38:18,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:18,327 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 102 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:18,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 91 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:18,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2022-01-28 14:38:18,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 697. [2022-01-28 14:38:18,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 696 states have (on average 3.685344827586207) internal successors, (2565), 696 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:18,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 2565 transitions. [2022-01-28 14:38:18,337 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 2565 transitions. Word has length 25 [2022-01-28 14:38:18,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:18,337 INFO L470 AbstractCegarLoop]: Abstraction has 697 states and 2565 transitions. [2022-01-28 14:38:18,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:18,338 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 2565 transitions. [2022-01-28 14:38:18,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:18,338 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:18,338 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:18,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable704 [2022-01-28 14:38:18,339 INFO L402 AbstractCegarLoop]: === Iteration 706 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:18,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:18,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1096772075, now seen corresponding path program 701 times [2022-01-28 14:38:18,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:18,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006767727] [2022-01-28 14:38:18,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:18,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:18,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:18,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:18,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006767727] [2022-01-28 14:38:18,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006767727] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:18,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:18,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:18,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717651275] [2022-01-28 14:38:18,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:18,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:18,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:18,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:18,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:18,468 INFO L87 Difference]: Start difference. First operand 697 states and 2565 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:18,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:18,561 INFO L93 Difference]: Finished difference Result 1264 states and 4403 transitions. [2022-01-28 14:38:18,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:18,561 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:18,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:18,563 INFO L225 Difference]: With dead ends: 1264 [2022-01-28 14:38:18,563 INFO L226 Difference]: Without dead ends: 1081 [2022-01-28 14:38:18,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:18,563 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 102 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:18,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 91 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:18,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2022-01-28 14:38:18,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 721. [2022-01-28 14:38:18,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 720 states have (on average 3.6680555555555556) internal successors, (2641), 720 states have internal predecessors, (2641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:18,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 2641 transitions. [2022-01-28 14:38:18,574 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 2641 transitions. Word has length 25 [2022-01-28 14:38:18,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:18,574 INFO L470 AbstractCegarLoop]: Abstraction has 721 states and 2641 transitions. [2022-01-28 14:38:18,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:18,574 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 2641 transitions. [2022-01-28 14:38:18,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:18,575 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:18,575 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:18,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable705 [2022-01-28 14:38:18,576 INFO L402 AbstractCegarLoop]: === Iteration 707 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:18,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:18,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1943569037, now seen corresponding path program 702 times [2022-01-28 14:38:18,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:18,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448439863] [2022-01-28 14:38:18,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:18,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:18,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:18,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:18,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448439863] [2022-01-28 14:38:18,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448439863] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:18,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:18,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:18,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532109879] [2022-01-28 14:38:18,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:18,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:18,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:18,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:18,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:18,661 INFO L87 Difference]: Start difference. First operand 721 states and 2641 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:18,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:18,731 INFO L93 Difference]: Finished difference Result 1256 states and 4351 transitions. [2022-01-28 14:38:18,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:18,731 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:18,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:18,733 INFO L225 Difference]: With dead ends: 1256 [2022-01-28 14:38:18,733 INFO L226 Difference]: Without dead ends: 1045 [2022-01-28 14:38:18,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:18,734 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 90 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:18,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 84 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:38:18,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2022-01-28 14:38:18,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 685. [2022-01-28 14:38:18,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 684 states have (on average 3.6944444444444446) internal successors, (2527), 684 states have internal predecessors, (2527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:18,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 2527 transitions. [2022-01-28 14:38:18,744 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 2527 transitions. Word has length 25 [2022-01-28 14:38:18,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:18,744 INFO L470 AbstractCegarLoop]: Abstraction has 685 states and 2527 transitions. [2022-01-28 14:38:18,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:18,744 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 2527 transitions. [2022-01-28 14:38:18,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:18,745 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:18,745 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:18,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable706 [2022-01-28 14:38:18,745 INFO L402 AbstractCegarLoop]: === Iteration 708 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:18,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:18,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1738335181, now seen corresponding path program 703 times [2022-01-28 14:38:18,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:18,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728745836] [2022-01-28 14:38:18,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:18,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:18,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:18,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:18,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:18,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728745836] [2022-01-28 14:38:18,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728745836] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:18,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:18,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:18,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701782017] [2022-01-28 14:38:18,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:18,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:18,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:18,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:18,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:18,830 INFO L87 Difference]: Start difference. First operand 685 states and 2527 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:18,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:18,898 INFO L93 Difference]: Finished difference Result 1244 states and 4317 transitions. [2022-01-28 14:38:18,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:18,898 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:18,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:18,900 INFO L225 Difference]: With dead ends: 1244 [2022-01-28 14:38:18,900 INFO L226 Difference]: Without dead ends: 1057 [2022-01-28 14:38:18,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:18,901 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 88 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:18,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 90 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:38:18,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2022-01-28 14:38:18,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 685. [2022-01-28 14:38:18,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 684 states have (on average 3.6535087719298245) internal successors, (2499), 684 states have internal predecessors, (2499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:18,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 2499 transitions. [2022-01-28 14:38:18,910 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 2499 transitions. Word has length 25 [2022-01-28 14:38:18,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:18,910 INFO L470 AbstractCegarLoop]: Abstraction has 685 states and 2499 transitions. [2022-01-28 14:38:18,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:18,911 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 2499 transitions. [2022-01-28 14:38:18,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:18,911 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:18,912 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:18,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable707 [2022-01-28 14:38:18,912 INFO L402 AbstractCegarLoop]: === Iteration 709 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:18,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:18,912 INFO L85 PathProgramCache]: Analyzing trace with hash -657272555, now seen corresponding path program 704 times [2022-01-28 14:38:18,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:18,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151264985] [2022-01-28 14:38:18,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:18,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:18,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:19,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:19,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:19,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151264985] [2022-01-28 14:38:19,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151264985] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:19,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:19,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:19,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926719435] [2022-01-28 14:38:19,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:19,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:19,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:19,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:19,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:19,005 INFO L87 Difference]: Start difference. First operand 685 states and 2499 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:19,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:19,072 INFO L93 Difference]: Finished difference Result 1240 states and 4277 transitions. [2022-01-28 14:38:19,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:19,072 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:19,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:19,074 INFO L225 Difference]: With dead ends: 1240 [2022-01-28 14:38:19,074 INFO L226 Difference]: Without dead ends: 1029 [2022-01-28 14:38:19,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:19,075 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 90 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:19,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 87 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:38:19,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2022-01-28 14:38:19,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 657. [2022-01-28 14:38:19,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 656 states have (on average 3.653963414634146) internal successors, (2397), 656 states have internal predecessors, (2397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:19,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 2397 transitions. [2022-01-28 14:38:19,084 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 2397 transitions. Word has length 25 [2022-01-28 14:38:19,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:19,084 INFO L470 AbstractCegarLoop]: Abstraction has 657 states and 2397 transitions. [2022-01-28 14:38:19,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:19,084 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 2397 transitions. [2022-01-28 14:38:19,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:19,085 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:19,085 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:19,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable708 [2022-01-28 14:38:19,085 INFO L402 AbstractCegarLoop]: === Iteration 710 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:19,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:19,085 INFO L85 PathProgramCache]: Analyzing trace with hash -722279373, now seen corresponding path program 705 times [2022-01-28 14:38:19,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:19,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689593408] [2022-01-28 14:38:19,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:19,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:19,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:19,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:19,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:19,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689593408] [2022-01-28 14:38:19,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689593408] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:19,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:19,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:19,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169042974] [2022-01-28 14:38:19,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:19,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:19,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:19,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:19,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:19,159 INFO L87 Difference]: Start difference. First operand 657 states and 2397 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:19,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:19,219 INFO L93 Difference]: Finished difference Result 1241 states and 4289 transitions. [2022-01-28 14:38:19,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:19,220 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:19,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:19,222 INFO L225 Difference]: With dead ends: 1241 [2022-01-28 14:38:19,222 INFO L226 Difference]: Without dead ends: 1054 [2022-01-28 14:38:19,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:19,222 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 97 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:19,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 88 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:38:19,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2022-01-28 14:38:19,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 703. [2022-01-28 14:38:19,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 702 states have (on average 3.6381766381766383) internal successors, (2554), 702 states have internal predecessors, (2554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:19,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 2554 transitions. [2022-01-28 14:38:19,231 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 2554 transitions. Word has length 25 [2022-01-28 14:38:19,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:19,232 INFO L470 AbstractCegarLoop]: Abstraction has 703 states and 2554 transitions. [2022-01-28 14:38:19,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:19,232 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 2554 transitions. [2022-01-28 14:38:19,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:19,233 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:19,233 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:19,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable709 [2022-01-28 14:38:19,233 INFO L402 AbstractCegarLoop]: === Iteration 711 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:19,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:19,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1785306163, now seen corresponding path program 706 times [2022-01-28 14:38:19,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:19,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429534607] [2022-01-28 14:38:19,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:19,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:19,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:19,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:19,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:19,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429534607] [2022-01-28 14:38:19,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429534607] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:19,308 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:19,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:19,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132599976] [2022-01-28 14:38:19,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:19,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:19,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:19,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:19,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:19,308 INFO L87 Difference]: Start difference. First operand 703 states and 2554 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:19,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:19,367 INFO L93 Difference]: Finished difference Result 1148 states and 3993 transitions. [2022-01-28 14:38:19,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:19,367 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:19,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:19,368 INFO L225 Difference]: With dead ends: 1148 [2022-01-28 14:38:19,368 INFO L226 Difference]: Without dead ends: 880 [2022-01-28 14:38:19,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:19,369 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 83 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:19,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 91 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:38:19,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2022-01-28 14:38:19,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 657. [2022-01-28 14:38:19,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 656 states have (on average 3.620426829268293) internal successors, (2375), 656 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:19,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 2375 transitions. [2022-01-28 14:38:19,377 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 2375 transitions. Word has length 25 [2022-01-28 14:38:19,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:19,377 INFO L470 AbstractCegarLoop]: Abstraction has 657 states and 2375 transitions. [2022-01-28 14:38:19,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:19,377 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 2375 transitions. [2022-01-28 14:38:19,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:19,378 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:19,378 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:19,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable710 [2022-01-28 14:38:19,379 INFO L402 AbstractCegarLoop]: === Iteration 712 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:19,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:19,379 INFO L85 PathProgramCache]: Analyzing trace with hash -334274411, now seen corresponding path program 707 times [2022-01-28 14:38:19,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:19,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547386821] [2022-01-28 14:38:19,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:19,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:19,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:19,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:19,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:19,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547386821] [2022-01-28 14:38:19,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547386821] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:19,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:19,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:19,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703101442] [2022-01-28 14:38:19,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:19,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:19,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:19,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:19,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:19,457 INFO L87 Difference]: Start difference. First operand 657 states and 2375 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:19,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:19,534 INFO L93 Difference]: Finished difference Result 1235 states and 4248 transitions. [2022-01-28 14:38:19,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:19,535 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:19,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:19,536 INFO L225 Difference]: With dead ends: 1235 [2022-01-28 14:38:19,536 INFO L226 Difference]: Without dead ends: 1052 [2022-01-28 14:38:19,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:19,537 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 96 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:19,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 82 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:19,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2022-01-28 14:38:19,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 701. [2022-01-28 14:38:19,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 700 states have (on average 3.61) internal successors, (2527), 700 states have internal predecessors, (2527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:19,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 2527 transitions. [2022-01-28 14:38:19,546 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 2527 transitions. Word has length 25 [2022-01-28 14:38:19,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:19,547 INFO L470 AbstractCegarLoop]: Abstraction has 701 states and 2527 transitions. [2022-01-28 14:38:19,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:19,547 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 2527 transitions. [2022-01-28 14:38:19,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:19,548 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:19,548 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:19,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable711 [2022-01-28 14:38:19,548 INFO L402 AbstractCegarLoop]: === Iteration 713 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:19,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:19,548 INFO L85 PathProgramCache]: Analyzing trace with hash 870374771, now seen corresponding path program 708 times [2022-01-28 14:38:19,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:19,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127560366] [2022-01-28 14:38:19,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:19,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:19,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:19,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:19,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127560366] [2022-01-28 14:38:19,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127560366] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:19,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:19,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:19,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597845710] [2022-01-28 14:38:19,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:19,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:19,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:19,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:19,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:19,626 INFO L87 Difference]: Start difference. First operand 701 states and 2527 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:19,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:19,687 INFO L93 Difference]: Finished difference Result 1146 states and 3966 transitions. [2022-01-28 14:38:19,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:19,688 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:19,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:19,689 INFO L225 Difference]: With dead ends: 1146 [2022-01-28 14:38:19,689 INFO L226 Difference]: Without dead ends: 858 [2022-01-28 14:38:19,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:19,689 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 80 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:19,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 89 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:38:19,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2022-01-28 14:38:19,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 635. [2022-01-28 14:38:19,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 634 states have (on average 3.6277602523659307) internal successors, (2300), 634 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:19,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 2300 transitions. [2022-01-28 14:38:19,698 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 2300 transitions. Word has length 25 [2022-01-28 14:38:19,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:19,698 INFO L470 AbstractCegarLoop]: Abstraction has 635 states and 2300 transitions. [2022-01-28 14:38:19,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:19,698 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 2300 transitions. [2022-01-28 14:38:19,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:19,699 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:19,699 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:19,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable712 [2022-01-28 14:38:19,699 INFO L402 AbstractCegarLoop]: === Iteration 714 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:19,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:19,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1767245845, now seen corresponding path program 709 times [2022-01-28 14:38:19,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:19,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141049027] [2022-01-28 14:38:19,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:19,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:19,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:19,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:19,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:19,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141049027] [2022-01-28 14:38:19,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141049027] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:19,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:19,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:19,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147501121] [2022-01-28 14:38:19,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:19,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:19,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:19,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:19,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:19,773 INFO L87 Difference]: Start difference. First operand 635 states and 2300 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:19,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:19,832 INFO L93 Difference]: Finished difference Result 1126 states and 3846 transitions. [2022-01-28 14:38:19,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:19,832 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:19,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:19,834 INFO L225 Difference]: With dead ends: 1126 [2022-01-28 14:38:19,834 INFO L226 Difference]: Without dead ends: 939 [2022-01-28 14:38:19,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:19,834 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 86 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:19,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 80 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:38:19,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2022-01-28 14:38:19,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 635. [2022-01-28 14:38:19,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 634 states have (on average 3.589905362776025) internal successors, (2276), 634 states have internal predecessors, (2276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:19,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 2276 transitions. [2022-01-28 14:38:19,843 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 2276 transitions. Word has length 25 [2022-01-28 14:38:19,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:19,843 INFO L470 AbstractCegarLoop]: Abstraction has 635 states and 2276 transitions. [2022-01-28 14:38:19,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:19,843 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 2276 transitions. [2022-01-28 14:38:19,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:19,844 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:19,844 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:19,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable713 [2022-01-28 14:38:19,844 INFO L402 AbstractCegarLoop]: === Iteration 715 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:19,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:19,844 INFO L85 PathProgramCache]: Analyzing trace with hash 78999573, now seen corresponding path program 710 times [2022-01-28 14:38:19,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:19,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279566016] [2022-01-28 14:38:19,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:19,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:19,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:19,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:19,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:19,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279566016] [2022-01-28 14:38:19,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279566016] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:19,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:19,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:19,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703256215] [2022-01-28 14:38:19,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:19,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:19,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:19,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:19,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:19,919 INFO L87 Difference]: Start difference. First operand 635 states and 2276 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:19,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:19,976 INFO L93 Difference]: Finished difference Result 1114 states and 3782 transitions. [2022-01-28 14:38:19,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:19,977 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:19,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:19,978 INFO L225 Difference]: With dead ends: 1114 [2022-01-28 14:38:19,978 INFO L226 Difference]: Without dead ends: 915 [2022-01-28 14:38:19,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:19,979 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 103 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:19,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 78 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:38:19,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2022-01-28 14:38:19,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 611. [2022-01-28 14:38:19,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 610 states have (on average 3.586885245901639) internal successors, (2188), 610 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:19,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 2188 transitions. [2022-01-28 14:38:19,987 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 2188 transitions. Word has length 25 [2022-01-28 14:38:19,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:19,987 INFO L470 AbstractCegarLoop]: Abstraction has 611 states and 2188 transitions. [2022-01-28 14:38:19,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:19,988 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 2188 transitions. [2022-01-28 14:38:19,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:19,988 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:19,988 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:19,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable714 [2022-01-28 14:38:19,989 INFO L402 AbstractCegarLoop]: === Iteration 716 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:19,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:19,989 INFO L85 PathProgramCache]: Analyzing trace with hash -196109069, now seen corresponding path program 711 times [2022-01-28 14:38:19,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:19,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431300946] [2022-01-28 14:38:19,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:19,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:19,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:20,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:20,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:20,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431300946] [2022-01-28 14:38:20,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431300946] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:20,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:20,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:20,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055423758] [2022-01-28 14:38:20,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:20,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:20,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:20,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:20,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:20,066 INFO L87 Difference]: Start difference. First operand 611 states and 2188 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:20,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:20,124 INFO L93 Difference]: Finished difference Result 1089 states and 3677 transitions. [2022-01-28 14:38:20,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:20,124 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:20,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:20,126 INFO L225 Difference]: With dead ends: 1089 [2022-01-28 14:38:20,126 INFO L226 Difference]: Without dead ends: 902 [2022-01-28 14:38:20,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:20,126 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 113 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:20,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 80 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:38:20,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2022-01-28 14:38:20,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 551. [2022-01-28 14:38:20,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 550 states have (on average 3.5309090909090908) internal successors, (1942), 550 states have internal predecessors, (1942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:20,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 1942 transitions. [2022-01-28 14:38:20,134 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 1942 transitions. Word has length 25 [2022-01-28 14:38:20,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:20,134 INFO L470 AbstractCegarLoop]: Abstraction has 551 states and 1942 transitions. [2022-01-28 14:38:20,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:20,134 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 1942 transitions. [2022-01-28 14:38:20,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:20,135 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:20,135 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:20,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable715 [2022-01-28 14:38:20,135 INFO L402 AbstractCegarLoop]: === Iteration 717 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:20,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:20,135 INFO L85 PathProgramCache]: Analyzing trace with hash -800059371, now seen corresponding path program 712 times [2022-01-28 14:38:20,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:20,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679810907] [2022-01-28 14:38:20,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:20,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:20,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:20,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:20,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:20,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679810907] [2022-01-28 14:38:20,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679810907] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:20,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:20,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:20,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631018079] [2022-01-28 14:38:20,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:20,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:20,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:20,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:20,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:20,213 INFO L87 Difference]: Start difference. First operand 551 states and 1942 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:20,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:20,294 INFO L93 Difference]: Finished difference Result 996 states and 3381 transitions. [2022-01-28 14:38:20,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:20,295 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:20,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:20,296 INFO L225 Difference]: With dead ends: 996 [2022-01-28 14:38:20,296 INFO L226 Difference]: Without dead ends: 728 [2022-01-28 14:38:20,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:20,296 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 117 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:20,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 90 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:38:20,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2022-01-28 14:38:20,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 505. [2022-01-28 14:38:20,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 504 states have (on average 3.501984126984127) internal successors, (1765), 504 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:20,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 1765 transitions. [2022-01-28 14:38:20,303 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 1765 transitions. Word has length 25 [2022-01-28 14:38:20,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:20,303 INFO L470 AbstractCegarLoop]: Abstraction has 505 states and 1765 transitions. [2022-01-28 14:38:20,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:20,304 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 1765 transitions. [2022-01-28 14:38:20,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:20,304 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:20,304 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:20,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable716 [2022-01-28 14:38:20,304 INFO L402 AbstractCegarLoop]: === Iteration 718 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:20,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:20,305 INFO L85 PathProgramCache]: Analyzing trace with hash 392046613, now seen corresponding path program 713 times [2022-01-28 14:38:20,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:20,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411356053] [2022-01-28 14:38:20,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:20,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:20,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:20,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:20,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:20,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411356053] [2022-01-28 14:38:20,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411356053] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:20,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:20,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:20,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210924853] [2022-01-28 14:38:20,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:20,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:20,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:20,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:20,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:20,437 INFO L87 Difference]: Start difference. First operand 505 states and 1765 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:20,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:20,526 INFO L93 Difference]: Finished difference Result 943 states and 3209 transitions. [2022-01-28 14:38:20,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:20,526 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:20,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:20,528 INFO L225 Difference]: With dead ends: 943 [2022-01-28 14:38:20,529 INFO L226 Difference]: Without dead ends: 768 [2022-01-28 14:38:20,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:20,529 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 84 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:20,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 83 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:20,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2022-01-28 14:38:20,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 545. [2022-01-28 14:38:20,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 544 states have (on average 3.5018382352941178) internal successors, (1905), 544 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:20,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 1905 transitions. [2022-01-28 14:38:20,539 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 1905 transitions. Word has length 25 [2022-01-28 14:38:20,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:20,539 INFO L470 AbstractCegarLoop]: Abstraction has 545 states and 1905 transitions. [2022-01-28 14:38:20,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:20,539 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 1905 transitions. [2022-01-28 14:38:20,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:20,540 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:20,540 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:20,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable717 [2022-01-28 14:38:20,541 INFO L402 AbstractCegarLoop]: === Iteration 719 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:20,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:20,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1428988813, now seen corresponding path program 714 times [2022-01-28 14:38:20,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:20,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981867818] [2022-01-28 14:38:20,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:20,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:20,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:20,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:20,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:20,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981867818] [2022-01-28 14:38:20,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981867818] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:20,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:20,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:20,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153539587] [2022-01-28 14:38:20,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:20,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:20,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:20,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:20,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:20,699 INFO L87 Difference]: Start difference. First operand 545 states and 1905 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:20,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:20,787 INFO L93 Difference]: Finished difference Result 767 states and 2624 transitions. [2022-01-28 14:38:20,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:20,787 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:20,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:20,789 INFO L225 Difference]: With dead ends: 767 [2022-01-28 14:38:20,789 INFO L226 Difference]: Without dead ends: 485 [2022-01-28 14:38:20,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:20,789 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 76 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:20,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 82 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-28 14:38:20,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2022-01-28 14:38:20,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 485. [2022-01-28 14:38:20,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 484 states have (on average 3.5020661157024793) internal successors, (1695), 484 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:20,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 1695 transitions. [2022-01-28 14:38:20,797 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 1695 transitions. Word has length 25 [2022-01-28 14:38:20,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:20,797 INFO L470 AbstractCegarLoop]: Abstraction has 485 states and 1695 transitions. [2022-01-28 14:38:20,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:20,798 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 1695 transitions. [2022-01-28 14:38:20,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:20,798 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:20,799 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:20,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable718 [2022-01-28 14:38:20,799 INFO L402 AbstractCegarLoop]: === Iteration 720 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:20,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:20,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1846766583, now seen corresponding path program 715 times [2022-01-28 14:38:20,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:20,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263386233] [2022-01-28 14:38:20,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:20,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:20,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:20,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:20,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263386233] [2022-01-28 14:38:20,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263386233] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:20,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:20,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:20,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263726501] [2022-01-28 14:38:20,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:20,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:20,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:20,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:20,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:20,921 INFO L87 Difference]: Start difference. First operand 485 states and 1695 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:20,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:20,982 INFO L93 Difference]: Finished difference Result 796 states and 2668 transitions. [2022-01-28 14:38:20,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:20,983 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:20,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:20,984 INFO L225 Difference]: With dead ends: 796 [2022-01-28 14:38:20,984 INFO L226 Difference]: Without dead ends: 613 [2022-01-28 14:38:20,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:20,984 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 70 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:20,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 76 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:38:20,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2022-01-28 14:38:20,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 485. [2022-01-28 14:38:20,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 484 states have (on average 3.4524793388429753) internal successors, (1671), 484 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:20,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 1671 transitions. [2022-01-28 14:38:20,990 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 1671 transitions. Word has length 25 [2022-01-28 14:38:20,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:20,990 INFO L470 AbstractCegarLoop]: Abstraction has 485 states and 1671 transitions. [2022-01-28 14:38:20,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:20,991 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 1671 transitions. [2022-01-28 14:38:20,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:20,991 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:20,991 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:20,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable719 [2022-01-28 14:38:20,991 INFO L402 AbstractCegarLoop]: === Iteration 721 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:20,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:20,991 INFO L85 PathProgramCache]: Analyzing trace with hash 999969621, now seen corresponding path program 716 times [2022-01-28 14:38:20,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:20,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998976638] [2022-01-28 14:38:20,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:20,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:20,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:21,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:21,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:21,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998976638] [2022-01-28 14:38:21,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998976638] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:21,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:21,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:21,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74068005] [2022-01-28 14:38:21,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:21,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:21,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:21,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:21,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:21,098 INFO L87 Difference]: Start difference. First operand 485 states and 1671 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:21,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:21,159 INFO L93 Difference]: Finished difference Result 788 states and 2616 transitions. [2022-01-28 14:38:21,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:21,159 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:21,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:21,160 INFO L225 Difference]: With dead ends: 788 [2022-01-28 14:38:21,160 INFO L226 Difference]: Without dead ends: 589 [2022-01-28 14:38:21,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:21,160 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 70 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:21,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 75 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:38:21,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2022-01-28 14:38:21,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 461. [2022-01-28 14:38:21,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 460 states have (on average 3.4413043478260867) internal successors, (1583), 460 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:21,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 1583 transitions. [2022-01-28 14:38:21,166 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 1583 transitions. Word has length 25 [2022-01-28 14:38:21,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:21,166 INFO L470 AbstractCegarLoop]: Abstraction has 461 states and 1583 transitions. [2022-01-28 14:38:21,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:21,166 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 1583 transitions. [2022-01-28 14:38:21,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:21,166 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:21,166 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:21,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable720 [2022-01-28 14:38:21,167 INFO L402 AbstractCegarLoop]: === Iteration 722 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:21,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:21,167 INFO L85 PathProgramCache]: Analyzing trace with hash -116588331, now seen corresponding path program 717 times [2022-01-28 14:38:21,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:21,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745538910] [2022-01-28 14:38:21,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:21,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:21,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:21,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:21,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:21,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745538910] [2022-01-28 14:38:21,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745538910] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:21,255 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:21,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:21,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052025972] [2022-01-28 14:38:21,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:21,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:21,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:21,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:21,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:21,255 INFO L87 Difference]: Start difference. First operand 461 states and 1583 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:21,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:21,324 INFO L93 Difference]: Finished difference Result 716 states and 2352 transitions. [2022-01-28 14:38:21,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:21,324 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:21,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:21,325 INFO L225 Difference]: With dead ends: 716 [2022-01-28 14:38:21,325 INFO L226 Difference]: Without dead ends: 533 [2022-01-28 14:38:21,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:21,326 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 68 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:21,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 76 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:38:21,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2022-01-28 14:38:21,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 405. [2022-01-28 14:38:21,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 404 states have (on average 3.344059405940594) internal successors, (1351), 404 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:21,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 1351 transitions. [2022-01-28 14:38:21,331 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 1351 transitions. Word has length 25 [2022-01-28 14:38:21,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:21,331 INFO L470 AbstractCegarLoop]: Abstraction has 405 states and 1351 transitions. [2022-01-28 14:38:21,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:21,331 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 1351 transitions. [2022-01-28 14:38:21,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:21,331 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:21,331 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:21,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable721 [2022-01-28 14:38:21,332 INFO L402 AbstractCegarLoop]: === Iteration 723 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:21,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:21,332 INFO L85 PathProgramCache]: Analyzing trace with hash -2023474987, now seen corresponding path program 718 times [2022-01-28 14:38:21,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:21,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264760250] [2022-01-28 14:38:21,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:21,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:21,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:21,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:21,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:21,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264760250] [2022-01-28 14:38:21,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264760250] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:21,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:21,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:21,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457257754] [2022-01-28 14:38:21,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:21,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:21,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:21,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:21,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:21,415 INFO L87 Difference]: Start difference. First operand 405 states and 1351 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:21,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:21,464 INFO L93 Difference]: Finished difference Result 627 states and 2070 transitions. [2022-01-28 14:38:21,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:21,464 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:21,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:21,465 INFO L225 Difference]: With dead ends: 627 [2022-01-28 14:38:21,465 INFO L226 Difference]: Without dead ends: 361 [2022-01-28 14:38:21,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:21,465 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 66 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:21,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 73 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:38:21,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2022-01-28 14:38:21,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2022-01-28 14:38:21,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 360 states have (on average 3.275) internal successors, (1179), 360 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:21,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 1179 transitions. [2022-01-28 14:38:21,469 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 1179 transitions. Word has length 25 [2022-01-28 14:38:21,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:21,469 INFO L470 AbstractCegarLoop]: Abstraction has 361 states and 1179 transitions. [2022-01-28 14:38:21,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:21,469 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 1179 transitions. [2022-01-28 14:38:21,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:21,470 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:21,470 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:21,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable722 [2022-01-28 14:38:21,470 INFO L402 AbstractCegarLoop]: === Iteration 724 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:21,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:21,470 INFO L85 PathProgramCache]: Analyzing trace with hash -973336397, now seen corresponding path program 719 times [2022-01-28 14:38:21,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:21,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856260306] [2022-01-28 14:38:21,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:21,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:21,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:21,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:21,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:21,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856260306] [2022-01-28 14:38:21,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856260306] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:21,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:21,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:21,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442988878] [2022-01-28 14:38:21,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:21,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:21,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:21,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:21,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:21,546 INFO L87 Difference]: Start difference. First operand 361 states and 1179 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:21,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:21,602 INFO L93 Difference]: Finished difference Result 488 states and 1563 transitions. [2022-01-28 14:38:21,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:21,602 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:21,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:21,603 INFO L225 Difference]: With dead ends: 488 [2022-01-28 14:38:21,603 INFO L226 Difference]: Without dead ends: 313 [2022-01-28 14:38:21,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:21,603 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 77 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:21,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 66 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:38:21,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-01-28 14:38:21,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2022-01-28 14:38:21,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 312 states have (on average 3.1378205128205128) internal successors, (979), 312 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:21,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 979 transitions. [2022-01-28 14:38:21,607 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 979 transitions. Word has length 25 [2022-01-28 14:38:21,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:21,607 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 979 transitions. [2022-01-28 14:38:21,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:21,607 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 979 transitions. [2022-01-28 14:38:21,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-28 14:38:21,607 INFO L506 BasicCegarLoop]: Found error trace [2022-01-28 14:38:21,607 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-28 14:38:21,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable723 [2022-01-28 14:38:21,607 INFO L402 AbstractCegarLoop]: === Iteration 725 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2022-01-28 14:38:21,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-28 14:38:21,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1590859755, now seen corresponding path program 720 times [2022-01-28 14:38:21,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-28 14:38:21,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413030764] [2022-01-28 14:38:21,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-28 14:38:21,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-28 14:38:21,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-28 14:38:21,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-28 14:38:21,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-28 14:38:21,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413030764] [2022-01-28 14:38:21,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413030764] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-28 14:38:21,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-28 14:38:21,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-28 14:38:21,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105516492] [2022-01-28 14:38:21,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-28 14:38:21,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-28 14:38:21,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-28 14:38:21,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-28 14:38:21,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-28 14:38:21,687 INFO L87 Difference]: Start difference. First operand 313 states and 979 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:21,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-28 14:38:21,731 INFO L93 Difference]: Finished difference Result 312 states and 978 transitions. [2022-01-28 14:38:21,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-28 14:38:21,731 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-28 14:38:21,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-28 14:38:21,732 INFO L225 Difference]: With dead ends: 312 [2022-01-28 14:38:21,732 INFO L226 Difference]: Without dead ends: 0 [2022-01-28 14:38:21,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-28 14:38:21,732 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 48 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-28 14:38:21,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 59 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-28 14:38:21,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-28 14:38:21,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-28 14:38:21,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:21,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-28 14:38:21,732 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2022-01-28 14:38:21,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-28 14:38:21,732 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-28 14:38:21,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-28 14:38:21,732 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-28 14:38:21,733 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-28 14:38:21,735 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (6 of 7 remaining) [2022-01-28 14:38:21,735 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (5 of 7 remaining) [2022-01-28 14:38:21,735 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (4 of 7 remaining) [2022-01-28 14:38:21,735 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (3 of 7 remaining) [2022-01-28 14:38:21,735 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION (2 of 7 remaining) [2022-01-28 14:38:21,735 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4INUSE_VIOLATION (1 of 7 remaining) [2022-01-28 14:38:21,735 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5INUSE_VIOLATION (0 of 7 remaining) [2022-01-28 14:38:21,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable724 [2022-01-28 14:38:21,737 INFO L732 BasicCegarLoop]: Path program histogram: [720, 1, 1, 1, 1, 1] [2022-01-28 14:38:21,738 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-28 14:38:21,738 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-28 14:38:21,740 INFO L202 PluginConnector]: Adding new model example_6.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 02:38:21 BasicIcfg [2022-01-28 14:38:21,740 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-28 14:38:21,740 INFO L158 Benchmark]: Toolchain (without parser) took 177757.49ms. Allocated memory was 199.2MB in the beginning and 751.8MB in the end (delta: 552.6MB). Free memory was 162.6MB in the beginning and 458.7MB in the end (delta: -296.0MB). Peak memory consumption was 257.4MB. Max. memory is 8.0GB. [2022-01-28 14:38:21,740 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.09ms. Allocated memory is still 199.2MB. Free memory is still 163.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-28 14:38:21,740 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.43ms. Allocated memory is still 199.2MB. Free memory was 162.6MB in the beginning and 161.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-28 14:38:21,740 INFO L158 Benchmark]: Boogie Preprocessor took 8.51ms. Allocated memory is still 199.2MB. Free memory was 161.1MB in the beginning and 160.2MB in the end (delta: 869.5kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-28 14:38:21,740 INFO L158 Benchmark]: RCFGBuilder took 236.92ms. Allocated memory is still 199.2MB. Free memory was 160.1MB in the beginning and 151.6MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-01-28 14:38:21,740 INFO L158 Benchmark]: TraceAbstraction took 177489.18ms. Allocated memory was 199.2MB in the beginning and 751.8MB in the end (delta: 552.6MB). Free memory was 151.1MB in the beginning and 458.7MB in the end (delta: -307.5MB). Peak memory consumption was 245.8MB. Max. memory is 8.0GB. [2022-01-28 14:38:21,741 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.09ms. Allocated memory is still 199.2MB. Free memory is still 163.7MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 19.43ms. Allocated memory is still 199.2MB. Free memory was 162.6MB in the beginning and 161.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 8.51ms. Allocated memory is still 199.2MB. Free memory was 161.1MB in the beginning and 160.2MB in the end (delta: 869.5kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 236.92ms. Allocated memory is still 199.2MB. Free memory was 160.1MB in the beginning and 151.6MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 177489.18ms. Allocated memory was 199.2MB in the beginning and 751.8MB in the end (delta: 552.6MB). Free memory was 151.1MB in the beginning and 458.7MB in the end (delta: -307.5MB). Peak memory consumption was 245.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 25]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 13 procedures, 58 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 177.4s, OverallIterations: 725, TraceHistogramMax: 1, PathProgramHistogramMax: 720, EmptinessCheckTime: 1.8s, AutomataDifference: 76.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.5s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 75990 SdHoareTripleChecker+Valid, 47.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 75990 mSDsluCounter, 103493 SdHoareTripleChecker+Invalid, 39.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 128405 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 110121 IncrementalHoareTripleChecker+Invalid, 110131 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 37171 mSDtfsCounter, 110121 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5775 GetRequests, 730 SyntacticMatches, 0 SemanticMatches, 5045 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2880 ImplicationChecksByTransitivity, 47.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4461occurred in iteration=0, InterpolantAutomatonStates: 5775, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 20.3s AutomataMinimizationTime, 725 MinimizatonAttempts, 806803 StatesRemovedByMinimization, 714 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 75.1s InterpolantComputationTime, 18125 NumberOfCodeBlocks, 18125 NumberOfCodeBlocksAsserted, 725 NumberOfCheckSat, 17400 ConstructedInterpolants, 0 QuantifiedInterpolants, 423525 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 725 InterpolantComputations, 725 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-01-28 14:38:21,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...