/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_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-15 13:04:40,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 13:04:40,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 13:04:40,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-15 13:04:40,241 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-15 13:04:40,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-15 13:04:40,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-15 13:04:40,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-15 13:04:40,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-15 13:04:40,256 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-15 13:04:40,256 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-15 13:04:40,257 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-15 13:04:40,257 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-15 13:04:40,258 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-15 13:04:40,259 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-15 13:04:40,260 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-15 13:04:40,260 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-15 13:04:40,261 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-15 13:04:40,262 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-15 13:04:40,263 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-15 13:04:40,264 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-15 13:04:40,269 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-15 13:04:40,272 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-15 13:04:40,273 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-15 13:04:40,275 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-15 13:04:40,275 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-15 13:04:40,275 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-15 13:04:40,276 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-15 13:04:40,276 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-15 13:04:40,277 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-15 13:04:40,277 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-15 13:04:40,277 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-15 13:04:40,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-15 13:04:40,278 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-15 13:04:40,279 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-15 13:04:40,279 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-15 13:04:40,280 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-15 13:04:40,280 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-15 13:04:40,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-15 13:04:40,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-15 13:04:40,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-15 13:04:40,283 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 [2022-02-15 13:04:40,306 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 13:04:40,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 13:04:40,307 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-15 13:04:40,307 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-15 13:04:40,308 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-15 13:04:40,308 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-15 13:04:40,308 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-15 13:04:40,308 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-15 13:04:40,309 INFO L138 SettingsManager]: * Use SBE=true [2022-02-15 13:04:40,309 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 13:04:40,309 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-15 13:04:40,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 13:04:40,310 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-15 13:04:40,310 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 13:04:40,310 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 13:04:40,310 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 13:04:40,310 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 13:04:40,310 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-15 13:04:40,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 13:04:40,310 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 13:04:40,311 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 13:04:40,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 13:04:40,311 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 13:04:40,311 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 13:04:40,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 13:04:40,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 13:04:40,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 13:04:40,312 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-15 13:04:40,312 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-15 13:04:40,313 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-15 13:04:40,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-15 13:04:40,313 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-15 13:04:40,313 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-15 13:04:40,313 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-15 13:04:40,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 13:04:40,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 13:04:40,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 13:04:40,552 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-15 13:04:40,553 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-15 13:04:40,554 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_4.bpl [2022-02-15 13:04:40,554 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_4.bpl' [2022-02-15 13:04:40,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 13:04:40,573 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-15 13:04:40,574 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-15 13:04:40,574 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-15 13:04:40,575 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-15 13:04:40,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:04:40" (1/1) ... [2022-02-15 13:04:40,592 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:04:40" (1/1) ... [2022-02-15 13:04:40,599 INFO L137 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-15 13:04:40,601 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-15 13:04:40,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 13:04:40,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 13:04:40,603 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 13:04:40,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:04:40" (1/1) ... [2022-02-15 13:04:40,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:04:40" (1/1) ... [2022-02-15 13:04:40,611 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:04:40" (1/1) ... [2022-02-15 13:04:40,611 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:04:40" (1/1) ... [2022-02-15 13:04:40,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:04:40" (1/1) ... [2022-02-15 13:04:40,613 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:04:40" (1/1) ... [2022-02-15 13:04:40,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:04:40" (1/1) ... [2022-02-15 13:04:40,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 13:04:40,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 13:04:40,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 13:04:40,616 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 13:04:40,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:04:40" (1/1) ... [2022-02-15 13:04:40,623 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 13:04:40,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:04:40,645 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) [2022-02-15 13:04:40,651 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 [2022-02-15 13:04:40,676 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2022-02-15 13:04:40,676 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2022-02-15 13:04:40,676 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2022-02-15 13:04:40,676 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2022-02-15 13:04:40,677 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2022-02-15 13:04:40,677 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2022-02-15 13:04:40,677 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2022-02-15 13:04:40,677 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2022-02-15 13:04:40,677 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2022-02-15 13:04:40,677 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2022-02-15 13:04:40,677 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2022-02-15 13:04:40,677 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2022-02-15 13:04:40,677 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-15 13:04:40,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 13:04:40,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 13:04:40,678 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-15 13:04:40,714 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 13:04:40,715 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 13:04:40,776 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 13:04:40,782 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 13:04:40,782 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-15 13:04:40,784 INFO L202 PluginConnector]: Adding new model example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:04:40 BoogieIcfgContainer [2022-02-15 13:04:40,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 13:04:40,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 13:04:40,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 13:04:40,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 13:04:40,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:04:40" (1/2) ... [2022-02-15 13:04:40,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31226f82 and model type example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:04:40, skipping insertion in model container [2022-02-15 13:04:40,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:04:40" (2/2) ... [2022-02-15 13:04:40,791 INFO L111 eAbstractionObserver]: Analyzing ICFG example_4.bpl [2022-02-15 13:04:40,795 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-15 13:04:40,796 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-15 13:04:40,796 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-15 13:04:40,796 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-15 13:04:40,827 INFO L148 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2022-02-15 13:04:40,886 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 13:04:40,908 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, mLazyFiniteAutomaton=false, 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 [2022-02-15 13:04:40,908 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-02-15 13:04:40,916 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 35 transitions, 138 flow [2022-02-15 13:04:41,056 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 297 states, 296 states have (on average 2.9628378378378377) internal successors, (877), 296 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:41,059 INFO L276 IsEmpty]: Start isEmpty. Operand has 297 states, 296 states have (on average 2.9628378378378377) internal successors, (877), 296 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:41,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-15 13:04:41,085 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:04:41,085 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:04:41,086 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-15 13:04:41,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:04:41,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1161633416, now seen corresponding path program 1 times [2022-02-15 13:04:41,104 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:04:41,106 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325035788] [2022-02-15 13:04:41,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:04:41,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:04:41,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:04:41,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:41,274 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:04:41,275 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325035788] [2022-02-15 13:04:41,275 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325035788] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:04:41,275 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:04:41,276 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-15 13:04:41,277 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359651908] [2022-02-15 13:04:41,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:04:41,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-15 13:04:41,281 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:04:41,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-15 13:04:41,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-15 13:04:41,310 INFO L87 Difference]: Start difference. First operand has 297 states, 296 states have (on average 2.9628378378378377) internal successors, (877), 296 states have internal predecessors, (877), 0 states have call successors, (0), 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 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:41,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:04:41,370 INFO L93 Difference]: Finished difference Result 270 states and 769 transitions. [2022-02-15 13:04:41,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-15 13:04:41,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-15 13:04:41,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:04:41,383 INFO L225 Difference]: With dead ends: 270 [2022-02-15 13:04:41,384 INFO L226 Difference]: Without dead ends: 270 [2022-02-15 13:04:41,385 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 [2022-02-15 13:04:41,391 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 21 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:04:41,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 13 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:04:41,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-02-15 13:04:41,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2022-02-15 13:04:41,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 2.858736059479554) internal successors, (769), 269 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:41,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 769 transitions. [2022-02-15 13:04:41,449 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 769 transitions. Word has length 17 [2022-02-15 13:04:41,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:04:41,450 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 769 transitions. [2022-02-15 13:04:41,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:41,450 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 769 transitions. [2022-02-15 13:04:41,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-15 13:04:41,452 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:04:41,453 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:04:41,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 13:04:41,453 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-15 13:04:41,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:04:41,454 INFO L85 PathProgramCache]: Analyzing trace with hash 641493016, now seen corresponding path program 1 times [2022-02-15 13:04:41,454 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:04:41,455 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412095392] [2022-02-15 13:04:41,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:04:41,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:04:41,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:04:41,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:41,518 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:04:41,518 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412095392] [2022-02-15 13:04:41,519 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412095392] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:04:41,519 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:04:41,519 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-15 13:04:41,519 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358358098] [2022-02-15 13:04:41,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:04:41,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-15 13:04:41,520 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:04:41,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-15 13:04:41,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-15 13:04:41,521 INFO L87 Difference]: Start difference. First operand 270 states and 769 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:41,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:04:41,545 INFO L93 Difference]: Finished difference Result 216 states and 589 transitions. [2022-02-15 13:04:41,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-15 13:04:41,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-15 13:04:41,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:04:41,548 INFO L225 Difference]: With dead ends: 216 [2022-02-15 13:04:41,549 INFO L226 Difference]: Without dead ends: 216 [2022-02-15 13:04:41,549 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 [2022-02-15 13:04:41,550 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 18 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:04:41,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 17 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:04:41,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-02-15 13:04:41,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2022-02-15 13:04:41,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 2.73953488372093) internal successors, (589), 215 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:41,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 589 transitions. [2022-02-15 13:04:41,565 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 589 transitions. Word has length 17 [2022-02-15 13:04:41,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:04:41,565 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 589 transitions. [2022-02-15 13:04:41,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:41,565 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 589 transitions. [2022-02-15 13:04:41,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-15 13:04:41,567 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:04:41,567 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:04:41,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-15 13:04:41,567 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-15 13:04:41,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:04:41,568 INFO L85 PathProgramCache]: Analyzing trace with hash -763467918, now seen corresponding path program 1 times [2022-02-15 13:04:41,568 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:04:41,568 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036599273] [2022-02-15 13:04:41,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:04:41,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:04:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:04:41,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:41,590 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:04:41,590 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036599273] [2022-02-15 13:04:41,591 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036599273] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:04:41,591 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:04:41,591 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-15 13:04:41,591 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449433751] [2022-02-15 13:04:41,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:04:41,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-15 13:04:41,592 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:04:41,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-15 13:04:41,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-15 13:04:41,593 INFO L87 Difference]: Start difference. First operand 216 states and 589 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:41,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:04:41,608 INFO L93 Difference]: Finished difference Result 162 states and 433 transitions. [2022-02-15 13:04:41,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-15 13:04:41,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-15 13:04:41,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:04:41,611 INFO L225 Difference]: With dead ends: 162 [2022-02-15 13:04:41,611 INFO L226 Difference]: Without dead ends: 162 [2022-02-15 13:04:41,611 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 [2022-02-15 13:04:41,612 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 7 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:04:41,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 21 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:04:41,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-02-15 13:04:41,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2022-02-15 13:04:41,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 2.68944099378882) internal successors, (433), 161 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:41,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 433 transitions. [2022-02-15 13:04:41,624 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 433 transitions. Word has length 17 [2022-02-15 13:04:41,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:04:41,624 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 433 transitions. [2022-02-15 13:04:41,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:41,624 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 433 transitions. [2022-02-15 13:04:41,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-15 13:04:41,625 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:04:41,625 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:04:41,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-15 13:04:41,626 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-15 13:04:41,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:04:41,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1899043666, now seen corresponding path program 1 times [2022-02-15 13:04:41,627 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:04:41,627 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153358607] [2022-02-15 13:04:41,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:04:41,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:04:41,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:04:41,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:41,824 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:04:41,825 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153358607] [2022-02-15 13:04:41,825 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153358607] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:04:41,825 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:04:41,825 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 13:04:41,825 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910534723] [2022-02-15 13:04:41,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:04:41,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 13:04:41,826 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:04:41,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 13:04:41,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-15 13:04:41,827 INFO L87 Difference]: Start difference. First operand 162 states and 433 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:41,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:04:41,913 INFO L93 Difference]: Finished difference Result 304 states and 750 transitions. [2022-02-15 13:04:41,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 13:04:41,913 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-15 13:04:41,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:04:41,915 INFO L225 Difference]: With dead ends: 304 [2022-02-15 13:04:41,916 INFO L226 Difference]: Without dead ends: 265 [2022-02-15 13:04:41,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-15 13:04:41,917 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 46 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:04:41,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 64 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:04:41,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-02-15 13:04:41,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 170. [2022-02-15 13:04:41,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 2.6804733727810652) internal successors, (453), 169 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:41,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 453 transitions. [2022-02-15 13:04:41,933 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 453 transitions. Word has length 17 [2022-02-15 13:04:41,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:04:41,933 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 453 transitions. [2022-02-15 13:04:41,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:41,933 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 453 transitions. [2022-02-15 13:04:41,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-15 13:04:41,934 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:04:41,934 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:04:41,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-15 13:04:41,935 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-15 13:04:41,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:04:41,936 INFO L85 PathProgramCache]: Analyzing trace with hash 445667984, now seen corresponding path program 2 times [2022-02-15 13:04:41,936 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:04:41,936 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402191062] [2022-02-15 13:04:41,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:04:41,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:04:41,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:04:42,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:42,126 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:04:42,126 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402191062] [2022-02-15 13:04:42,126 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402191062] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:04:42,126 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:04:42,127 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 13:04:42,127 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106025772] [2022-02-15 13:04:42,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:04:42,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 13:04:42,129 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:04:42,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 13:04:42,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-15 13:04:42,130 INFO L87 Difference]: Start difference. First operand 170 states and 453 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:42,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:04:42,236 INFO L93 Difference]: Finished difference Result 319 states and 785 transitions. [2022-02-15 13:04:42,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 13:04:42,238 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-15 13:04:42,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:04:42,240 INFO L225 Difference]: With dead ends: 319 [2022-02-15 13:04:42,241 INFO L226 Difference]: Without dead ends: 257 [2022-02-15 13:04:42,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-15 13:04:42,253 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 55 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:04:42,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 55 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:04:42,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-02-15 13:04:42,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 162. [2022-02-15 13:04:42,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 2.6645962732919255) internal successors, (429), 161 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:42,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 429 transitions. [2022-02-15 13:04:42,275 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 429 transitions. Word has length 17 [2022-02-15 13:04:42,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:04:42,275 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 429 transitions. [2022-02-15 13:04:42,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:42,275 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 429 transitions. [2022-02-15 13:04:42,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-15 13:04:42,276 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:04:42,276 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:04:42,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-15 13:04:42,277 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-15 13:04:42,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:04:42,277 INFO L85 PathProgramCache]: Analyzing trace with hash 805988880, now seen corresponding path program 3 times [2022-02-15 13:04:42,278 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:04:42,278 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390270348] [2022-02-15 13:04:42,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:04:42,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:04:42,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:04:42,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:42,435 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:04:42,435 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390270348] [2022-02-15 13:04:42,435 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390270348] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:04:42,435 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:04:42,435 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 13:04:42,436 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818373700] [2022-02-15 13:04:42,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:04:42,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 13:04:42,436 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:04:42,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 13:04:42,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-15 13:04:42,437 INFO L87 Difference]: Start difference. First operand 162 states and 429 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:42,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:04:42,513 INFO L93 Difference]: Finished difference Result 291 states and 712 transitions. [2022-02-15 13:04:42,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 13:04:42,514 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-15 13:04:42,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:04:42,519 INFO L225 Difference]: With dead ends: 291 [2022-02-15 13:04:42,519 INFO L226 Difference]: Without dead ends: 252 [2022-02-15 13:04:42,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-15 13:04:42,522 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 52 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:04:42,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 56 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:04:42,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-02-15 13:04:42,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 166. [2022-02-15 13:04:42,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 2.6484848484848484) internal successors, (437), 165 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:42,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 437 transitions. [2022-02-15 13:04:42,531 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 437 transitions. Word has length 17 [2022-02-15 13:04:42,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:04:42,532 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 437 transitions. [2022-02-15 13:04:42,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:42,532 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 437 transitions. [2022-02-15 13:04:42,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-15 13:04:42,533 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:04:42,533 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:04:42,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-15 13:04:42,533 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-15 13:04:42,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:04:42,534 INFO L85 PathProgramCache]: Analyzing trace with hash -211955184, now seen corresponding path program 4 times [2022-02-15 13:04:42,534 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:04:42,534 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501119122] [2022-02-15 13:04:42,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:04:42,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:04:42,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:04:42,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:42,640 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:04:42,640 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501119122] [2022-02-15 13:04:42,641 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501119122] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:04:42,641 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:04:42,641 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 13:04:42,641 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202955844] [2022-02-15 13:04:42,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:04:42,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 13:04:42,642 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:04:42,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 13:04:42,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-15 13:04:42,642 INFO L87 Difference]: Start difference. First operand 166 states and 437 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:42,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:04:42,731 INFO L93 Difference]: Finished difference Result 297 states and 725 transitions. [2022-02-15 13:04:42,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 13:04:42,731 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-15 13:04:42,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:04:42,733 INFO L225 Difference]: With dead ends: 297 [2022-02-15 13:04:42,733 INFO L226 Difference]: Without dead ends: 248 [2022-02-15 13:04:42,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-15 13:04:42,735 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 45 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:04:42,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 60 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:04:42,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-02-15 13:04:42,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 162. [2022-02-15 13:04:42,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 2.652173913043478) internal successors, (427), 161 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:42,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 427 transitions. [2022-02-15 13:04:42,746 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 427 transitions. Word has length 17 [2022-02-15 13:04:42,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:04:42,747 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 427 transitions. [2022-02-15 13:04:42,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:42,747 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 427 transitions. [2022-02-15 13:04:42,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-15 13:04:42,748 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:04:42,748 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:04:42,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-15 13:04:42,749 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-15 13:04:42,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:04:42,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1123260558, now seen corresponding path program 5 times [2022-02-15 13:04:42,753 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:04:42,753 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643088705] [2022-02-15 13:04:42,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:04:42,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:04:42,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:04:42,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:42,911 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:04:42,911 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643088705] [2022-02-15 13:04:42,912 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643088705] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:04:42,912 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:04:42,912 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 13:04:42,912 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379598848] [2022-02-15 13:04:42,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:04:42,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 13:04:42,912 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:04:42,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 13:04:42,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-15 13:04:42,913 INFO L87 Difference]: Start difference. First operand 162 states and 427 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:42,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:04:42,988 INFO L93 Difference]: Finished difference Result 332 states and 818 transitions. [2022-02-15 13:04:42,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 13:04:42,988 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-15 13:04:42,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:04:42,990 INFO L225 Difference]: With dead ends: 332 [2022-02-15 13:04:42,990 INFO L226 Difference]: Without dead ends: 278 [2022-02-15 13:04:42,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-15 13:04:42,991 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 41 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:04:42,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 66 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:04:42,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-02-15 13:04:42,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 177. [2022-02-15 13:04:42,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 2.602272727272727) internal successors, (458), 176 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:42,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 458 transitions. [2022-02-15 13:04:42,998 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 458 transitions. Word has length 17 [2022-02-15 13:04:42,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:04:42,998 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 458 transitions. [2022-02-15 13:04:42,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:42,998 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 458 transitions. [2022-02-15 13:04:42,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-15 13:04:42,999 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:04:42,999 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:04:42,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-15 13:04:43,000 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-15 13:04:43,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:04:43,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1451643440, now seen corresponding path program 6 times [2022-02-15 13:04:43,003 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:04:43,005 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785098562] [2022-02-15 13:04:43,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:04:43,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:04:43,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:04:43,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:43,098 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:04:43,098 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785098562] [2022-02-15 13:04:43,098 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785098562] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:04:43,098 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:04:43,098 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 13:04:43,098 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981872908] [2022-02-15 13:04:43,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:04:43,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 13:04:43,099 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:04:43,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 13:04:43,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-15 13:04:43,100 INFO L87 Difference]: Start difference. First operand 177 states and 458 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:43,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:04:43,174 INFO L93 Difference]: Finished difference Result 323 states and 785 transitions. [2022-02-15 13:04:43,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 13:04:43,175 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-15 13:04:43,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:04:43,177 INFO L225 Difference]: With dead ends: 323 [2022-02-15 13:04:43,178 INFO L226 Difference]: Without dead ends: 257 [2022-02-15 13:04:43,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-15 13:04:43,179 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 47 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:04:43,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 62 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:04:43,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-02-15 13:04:43,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 156. [2022-02-15 13:04:43,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 2.6516129032258067) internal successors, (411), 155 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:43,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 411 transitions. [2022-02-15 13:04:43,186 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 411 transitions. Word has length 17 [2022-02-15 13:04:43,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:04:43,186 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 411 transitions. [2022-02-15 13:04:43,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:43,187 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 411 transitions. [2022-02-15 13:04:43,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-15 13:04:43,187 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:04:43,187 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:04:43,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-15 13:04:43,188 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-15 13:04:43,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:04:43,188 INFO L85 PathProgramCache]: Analyzing trace with hash -817981040, now seen corresponding path program 7 times [2022-02-15 13:04:43,189 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:04:43,189 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408181012] [2022-02-15 13:04:43,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:04:43,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:04:43,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:04:43,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:43,298 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:04:43,298 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408181012] [2022-02-15 13:04:43,299 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408181012] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:04:43,299 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:04:43,299 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 13:04:43,299 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625046682] [2022-02-15 13:04:43,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:04:43,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 13:04:43,299 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:04:43,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 13:04:43,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-15 13:04:43,300 INFO L87 Difference]: Start difference. First operand 156 states and 411 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:43,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:04:43,368 INFO L93 Difference]: Finished difference Result 290 states and 704 transitions. [2022-02-15 13:04:43,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 13:04:43,369 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-15 13:04:43,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:04:43,370 INFO L225 Difference]: With dead ends: 290 [2022-02-15 13:04:43,370 INFO L226 Difference]: Without dead ends: 251 [2022-02-15 13:04:43,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-15 13:04:43,371 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 49 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:04:43,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 60 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:04:43,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-02-15 13:04:43,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 156. [2022-02-15 13:04:43,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 2.6258064516129034) internal successors, (407), 155 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:43,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 407 transitions. [2022-02-15 13:04:43,377 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 407 transitions. Word has length 17 [2022-02-15 13:04:43,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:04:43,377 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 407 transitions. [2022-02-15 13:04:43,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:43,378 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 407 transitions. [2022-02-15 13:04:43,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-15 13:04:43,378 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:04:43,378 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:04:43,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-15 13:04:43,379 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-15 13:04:43,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:04:43,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1526730610, now seen corresponding path program 8 times [2022-02-15 13:04:43,379 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:04:43,379 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947007171] [2022-02-15 13:04:43,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:04:43,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:04:43,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:04:43,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:43,495 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:04:43,495 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947007171] [2022-02-15 13:04:43,495 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947007171] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:04:43,495 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:04:43,495 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 13:04:43,495 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832350922] [2022-02-15 13:04:43,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:04:43,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 13:04:43,496 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:04:43,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 13:04:43,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-15 13:04:43,497 INFO L87 Difference]: Start difference. First operand 156 states and 407 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:43,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:04:43,559 INFO L93 Difference]: Finished difference Result 305 states and 739 transitions. [2022-02-15 13:04:43,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 13:04:43,560 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-15 13:04:43,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:04:43,561 INFO L225 Difference]: With dead ends: 305 [2022-02-15 13:04:43,561 INFO L226 Difference]: Without dead ends: 243 [2022-02-15 13:04:43,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-15 13:04:43,562 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 56 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:04:43,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 55 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:04:43,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-02-15 13:04:43,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 148. [2022-02-15 13:04:43,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 2.6054421768707483) internal successors, (383), 147 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:43,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 383 transitions. [2022-02-15 13:04:43,568 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 383 transitions. Word has length 17 [2022-02-15 13:04:43,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:04:43,568 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 383 transitions. [2022-02-15 13:04:43,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:43,568 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 383 transitions. [2022-02-15 13:04:43,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-15 13:04:43,569 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:04:43,569 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:04:43,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-15 13:04:43,569 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-15 13:04:43,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:04:43,571 INFO L85 PathProgramCache]: Analyzing trace with hash 190316944, now seen corresponding path program 9 times [2022-02-15 13:04:43,571 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:04:43,571 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588412757] [2022-02-15 13:04:43,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:04:43,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:04:43,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:04:43,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:43,683 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:04:43,683 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588412757] [2022-02-15 13:04:43,683 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588412757] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:04:43,683 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:04:43,683 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 13:04:43,684 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841668765] [2022-02-15 13:04:43,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:04:43,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 13:04:43,684 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:04:43,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 13:04:43,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-15 13:04:43,685 INFO L87 Difference]: Start difference. First operand 148 states and 383 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:43,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:04:43,745 INFO L93 Difference]: Finished difference Result 267 states and 641 transitions. [2022-02-15 13:04:43,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 13:04:43,746 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-15 13:04:43,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:04:43,747 INFO L225 Difference]: With dead ends: 267 [2022-02-15 13:04:43,748 INFO L226 Difference]: Without dead ends: 228 [2022-02-15 13:04:43,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-15 13:04:43,748 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 47 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:04:43,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 61 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:04:43,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-02-15 13:04:43,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 152. [2022-02-15 13:04:43,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.589403973509934) internal successors, (391), 151 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:43,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 391 transitions. [2022-02-15 13:04:43,754 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 391 transitions. Word has length 17 [2022-02-15 13:04:43,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:04:43,755 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 391 transitions. [2022-02-15 13:04:43,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:43,755 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 391 transitions. [2022-02-15 13:04:43,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-15 13:04:43,755 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:04:43,759 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:04:43,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-15 13:04:43,759 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-15 13:04:43,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:04:43,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1506256496, now seen corresponding path program 10 times [2022-02-15 13:04:43,760 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:04:43,760 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285638143] [2022-02-15 13:04:43,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:04:43,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:04:43,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:04:43,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:43,872 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:04:43,872 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285638143] [2022-02-15 13:04:43,872 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285638143] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:04:43,872 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:04:43,872 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 13:04:43,872 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728496434] [2022-02-15 13:04:43,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:04:43,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 13:04:43,873 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:04:43,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 13:04:43,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-15 13:04:43,873 INFO L87 Difference]: Start difference. First operand 152 states and 391 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:43,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:04:43,935 INFO L93 Difference]: Finished difference Result 239 states and 584 transitions. [2022-02-15 13:04:43,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 13:04:43,936 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-15 13:04:43,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:04:43,937 INFO L225 Difference]: With dead ends: 239 [2022-02-15 13:04:43,937 INFO L226 Difference]: Without dead ends: 192 [2022-02-15 13:04:43,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-15 13:04:43,938 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 41 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:04:43,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 58 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:04:43,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-02-15 13:04:43,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 148. [2022-02-15 13:04:43,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 2.5918367346938775) internal successors, (381), 147 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:43,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 381 transitions. [2022-02-15 13:04:43,943 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 381 transitions. Word has length 17 [2022-02-15 13:04:43,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:04:43,943 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 381 transitions. [2022-02-15 13:04:43,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:43,944 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 381 transitions. [2022-02-15 13:04:43,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-15 13:04:43,945 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:04:43,945 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:04:43,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-15 13:04:43,945 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-15 13:04:43,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:04:43,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1738932494, now seen corresponding path program 11 times [2022-02-15 13:04:43,946 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:04:43,946 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661256204] [2022-02-15 13:04:43,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:04:43,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:04:43,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:04:44,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:44,033 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:04:44,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661256204] [2022-02-15 13:04:44,033 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661256204] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:04:44,034 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:04:44,034 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 13:04:44,034 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484777900] [2022-02-15 13:04:44,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:04:44,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 13:04:44,034 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:04:44,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 13:04:44,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-15 13:04:44,035 INFO L87 Difference]: Start difference. First operand 148 states and 381 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:44,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:04:44,103 INFO L93 Difference]: Finished difference Result 288 states and 697 transitions. [2022-02-15 13:04:44,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 13:04:44,104 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-15 13:04:44,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:04:44,106 INFO L225 Difference]: With dead ends: 288 [2022-02-15 13:04:44,106 INFO L226 Difference]: Without dead ends: 234 [2022-02-15 13:04:44,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-15 13:04:44,107 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 46 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:04:44,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 59 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:04:44,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-02-15 13:04:44,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 158. [2022-02-15 13:04:44,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 2.5605095541401273) internal successors, (402), 157 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:44,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 402 transitions. [2022-02-15 13:04:44,114 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 402 transitions. Word has length 17 [2022-02-15 13:04:44,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:04:44,114 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 402 transitions. [2022-02-15 13:04:44,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:44,114 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 402 transitions. [2022-02-15 13:04:44,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-15 13:04:44,115 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:04:44,115 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:04:44,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-15 13:04:44,115 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-15 13:04:44,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:04:44,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1650995760, now seen corresponding path program 12 times [2022-02-15 13:04:44,115 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:04:44,115 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33094245] [2022-02-15 13:04:44,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:04:44,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:04:44,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:04:44,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:44,187 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:04:44,187 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33094245] [2022-02-15 13:04:44,187 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33094245] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:04:44,187 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:04:44,187 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 13:04:44,187 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216970943] [2022-02-15 13:04:44,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:04:44,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 13:04:44,187 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:04:44,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 13:04:44,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-15 13:04:44,188 INFO L87 Difference]: Start difference. First operand 158 states and 402 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:44,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:04:44,250 INFO L93 Difference]: Finished difference Result 245 states and 595 transitions. [2022-02-15 13:04:44,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 13:04:44,250 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-15 13:04:44,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:04:44,251 INFO L225 Difference]: With dead ends: 245 [2022-02-15 13:04:44,251 INFO L226 Difference]: Without dead ends: 188 [2022-02-15 13:04:44,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-15 13:04:44,254 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 46 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:04:44,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 52 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:04:44,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-02-15 13:04:44,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 144. [2022-02-15 13:04:44,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 2.5944055944055946) internal successors, (371), 143 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:44,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 371 transitions. [2022-02-15 13:04:44,259 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 371 transitions. Word has length 17 [2022-02-15 13:04:44,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:04:44,260 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 371 transitions. [2022-02-15 13:04:44,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:44,260 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 371 transitions. [2022-02-15 13:04:44,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-15 13:04:44,262 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:04:44,262 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:04:44,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-15 13:04:44,263 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-15 13:04:44,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:04:44,263 INFO L85 PathProgramCache]: Analyzing trace with hash 599180914, now seen corresponding path program 13 times [2022-02-15 13:04:44,263 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:04:44,263 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270044467] [2022-02-15 13:04:44,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:04:44,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:04:44,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:04:44,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:44,353 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:04:44,354 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270044467] [2022-02-15 13:04:44,356 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270044467] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:04:44,356 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:04:44,356 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 13:04:44,356 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213716562] [2022-02-15 13:04:44,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:04:44,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 13:04:44,357 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:04:44,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 13:04:44,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-15 13:04:44,359 INFO L87 Difference]: Start difference. First operand 144 states and 371 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:44,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:04:44,419 INFO L93 Difference]: Finished difference Result 261 states and 622 transitions. [2022-02-15 13:04:44,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 13:04:44,420 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-15 13:04:44,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:04:44,421 INFO L225 Difference]: With dead ends: 261 [2022-02-15 13:04:44,421 INFO L226 Difference]: Without dead ends: 222 [2022-02-15 13:04:44,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-15 13:04:44,422 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 40 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:04:44,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 69 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:04:44,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-02-15 13:04:44,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 144. [2022-02-15 13:04:44,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 2.5664335664335662) internal successors, (367), 143 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:44,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 367 transitions. [2022-02-15 13:04:44,426 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 367 transitions. Word has length 17 [2022-02-15 13:04:44,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:04:44,427 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 367 transitions. [2022-02-15 13:04:44,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:44,427 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 367 transitions. [2022-02-15 13:04:44,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-15 13:04:44,427 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:04:44,427 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:04:44,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-15 13:04:44,428 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-15 13:04:44,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:04:44,428 INFO L85 PathProgramCache]: Analyzing trace with hash -418763150, now seen corresponding path program 14 times [2022-02-15 13:04:44,428 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:04:44,428 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261569969] [2022-02-15 13:04:44,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:04:44,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:04:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:04:44,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:44,502 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:04:44,502 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261569969] [2022-02-15 13:04:44,503 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261569969] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:04:44,503 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:04:44,503 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 13:04:44,503 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431012175] [2022-02-15 13:04:44,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:04:44,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 13:04:44,503 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:04:44,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 13:04:44,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-15 13:04:44,504 INFO L87 Difference]: Start difference. First operand 144 states and 367 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:44,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:04:44,563 INFO L93 Difference]: Finished difference Result 267 states and 635 transitions. [2022-02-15 13:04:44,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 13:04:44,564 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-15 13:04:44,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:04:44,565 INFO L225 Difference]: With dead ends: 267 [2022-02-15 13:04:44,565 INFO L226 Difference]: Without dead ends: 218 [2022-02-15 13:04:44,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-15 13:04:44,565 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 47 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:04:44,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 59 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:04:44,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-02-15 13:04:44,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 140. [2022-02-15 13:04:44,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 2.568345323741007) internal successors, (357), 139 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:44,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 357 transitions. [2022-02-15 13:04:44,570 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 357 transitions. Word has length 17 [2022-02-15 13:04:44,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:04:44,570 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 357 transitions. [2022-02-15 13:04:44,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:44,570 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 357 transitions. [2022-02-15 13:04:44,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-15 13:04:44,571 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:04:44,571 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:04:44,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-15 13:04:44,571 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-15 13:04:44,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:04:44,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1444156080, now seen corresponding path program 15 times [2022-02-15 13:04:44,572 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:04:44,572 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647986417] [2022-02-15 13:04:44,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:04:44,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:04:44,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:04:44,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:44,638 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:04:44,638 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647986417] [2022-02-15 13:04:44,638 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647986417] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:04:44,638 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:04:44,638 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 13:04:44,638 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077838811] [2022-02-15 13:04:44,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:04:44,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 13:04:44,639 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:04:44,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 13:04:44,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-15 13:04:44,639 INFO L87 Difference]: Start difference. First operand 140 states and 357 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:44,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:04:44,691 INFO L93 Difference]: Finished difference Result 247 states and 583 transitions. [2022-02-15 13:04:44,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 13:04:44,691 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-15 13:04:44,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:04:44,693 INFO L225 Difference]: With dead ends: 247 [2022-02-15 13:04:44,693 INFO L226 Difference]: Without dead ends: 208 [2022-02-15 13:04:44,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-15 13:04:44,693 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 46 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:04:44,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 58 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:04:44,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-02-15 13:04:44,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 132. [2022-02-15 13:04:44,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 2.5419847328244276) internal successors, (333), 131 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:44,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 333 transitions. [2022-02-15 13:04:44,698 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 333 transitions. Word has length 17 [2022-02-15 13:04:44,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:04:44,698 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 333 transitions. [2022-02-15 13:04:44,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:44,698 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 333 transitions. [2022-02-15 13:04:44,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-15 13:04:44,698 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:04:44,698 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:04:44,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-15 13:04:44,699 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-15 13:04:44,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:04:44,699 INFO L85 PathProgramCache]: Analyzing trace with hash -425193870, now seen corresponding path program 16 times [2022-02-15 13:04:44,699 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:04:44,699 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836003879] [2022-02-15 13:04:44,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:04:44,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:04:44,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:04:44,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:44,794 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:04:44,794 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836003879] [2022-02-15 13:04:44,794 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836003879] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:04:44,794 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:04:44,794 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 13:04:44,795 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300828575] [2022-02-15 13:04:44,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:04:44,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 13:04:44,795 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:04:44,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 13:04:44,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-15 13:04:44,796 INFO L87 Difference]: Start difference. First operand 132 states and 333 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:44,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:04:44,850 INFO L93 Difference]: Finished difference Result 219 states and 526 transitions. [2022-02-15 13:04:44,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 13:04:44,851 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-15 13:04:44,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:04:44,852 INFO L225 Difference]: With dead ends: 219 [2022-02-15 13:04:44,852 INFO L226 Difference]: Without dead ends: 172 [2022-02-15 13:04:44,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-15 13:04:44,852 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 38 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:04:44,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 57 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:04:44,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-02-15 13:04:44,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 128. [2022-02-15 13:04:44,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 2.543307086614173) internal successors, (323), 127 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:44,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 323 transitions. [2022-02-15 13:04:44,857 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 323 transitions. Word has length 17 [2022-02-15 13:04:44,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:04:44,857 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 323 transitions. [2022-02-15 13:04:44,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:44,858 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 323 transitions. [2022-02-15 13:04:44,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-15 13:04:44,858 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:04:44,858 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:04:44,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-15 13:04:44,858 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-15 13:04:44,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:04:44,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1261733490, now seen corresponding path program 17 times [2022-02-15 13:04:44,859 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:04:44,859 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398683829] [2022-02-15 13:04:44,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:04:44,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:04:44,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:04:44,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:44,934 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:04:44,934 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398683829] [2022-02-15 13:04:44,935 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398683829] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:04:44,935 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:04:44,935 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 13:04:44,935 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665118298] [2022-02-15 13:04:44,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:04:44,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 13:04:44,935 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:04:44,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 13:04:44,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-15 13:04:44,936 INFO L87 Difference]: Start difference. First operand 128 states and 323 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:44,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:04:44,992 INFO L93 Difference]: Finished difference Result 223 states and 540 transitions. [2022-02-15 13:04:44,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 13:04:44,993 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-15 13:04:44,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:04:44,994 INFO L225 Difference]: With dead ends: 223 [2022-02-15 13:04:44,994 INFO L226 Difference]: Without dead ends: 178 [2022-02-15 13:04:44,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-15 13:04:44,995 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 38 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:04:44,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 54 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:04:44,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-02-15 13:04:45,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 134. [2022-02-15 13:04:45,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 2.526315789473684) internal successors, (336), 133 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:45,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 336 transitions. [2022-02-15 13:04:45,002 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 336 transitions. Word has length 17 [2022-02-15 13:04:45,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:04:45,002 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 336 transitions. [2022-02-15 13:04:45,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:45,002 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 336 transitions. [2022-02-15 13:04:45,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-15 13:04:45,003 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:04:45,003 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:04:45,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-15 13:04:45,003 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-15 13:04:45,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:04:45,004 INFO L85 PathProgramCache]: Analyzing trace with hash 933350608, now seen corresponding path program 18 times [2022-02-15 13:04:45,004 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:04:45,004 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164741114] [2022-02-15 13:04:45,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:04:45,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:04:45,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:04:45,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:45,074 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:04:45,074 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164741114] [2022-02-15 13:04:45,074 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164741114] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:04:45,074 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:04:45,074 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 13:04:45,074 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322559784] [2022-02-15 13:04:45,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:04:45,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 13:04:45,075 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:04:45,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 13:04:45,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-15 13:04:45,076 INFO L87 Difference]: Start difference. First operand 134 states and 336 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:45,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:04:45,137 INFO L93 Difference]: Finished difference Result 177 states and 432 transitions. [2022-02-15 13:04:45,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 13:04:45,137 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-15 13:04:45,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:04:45,138 INFO L225 Difference]: With dead ends: 177 [2022-02-15 13:04:45,138 INFO L226 Difference]: Without dead ends: 126 [2022-02-15 13:04:45,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-15 13:04:45,139 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 25 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:04:45,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 59 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:04:45,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-02-15 13:04:45,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2022-02-15 13:04:45,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 2.552) internal successors, (319), 125 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:45,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 319 transitions. [2022-02-15 13:04:45,143 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 319 transitions. Word has length 17 [2022-02-15 13:04:45,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:04:45,143 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 319 transitions. [2022-02-15 13:04:45,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:45,143 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 319 transitions. [2022-02-15 13:04:45,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-15 13:04:45,143 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:04:45,143 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:04:45,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-15 13:04:45,144 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-15 13:04:45,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:04:45,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1677028180, now seen corresponding path program 19 times [2022-02-15 13:04:45,144 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:04:45,144 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373812277] [2022-02-15 13:04:45,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:04:45,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:04:45,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:04:45,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:45,220 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:04:45,221 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373812277] [2022-02-15 13:04:45,221 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373812277] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:04:45,221 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:04:45,221 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 13:04:45,221 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963432174] [2022-02-15 13:04:45,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:04:45,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 13:04:45,221 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:04:45,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 13:04:45,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-15 13:04:45,222 INFO L87 Difference]: Start difference. First operand 126 states and 319 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:45,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:04:45,279 INFO L93 Difference]: Finished difference Result 212 states and 507 transitions. [2022-02-15 13:04:45,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 13:04:45,280 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-15 13:04:45,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:04:45,281 INFO L225 Difference]: With dead ends: 212 [2022-02-15 13:04:45,281 INFO L226 Difference]: Without dead ends: 158 [2022-02-15 13:04:45,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-15 13:04:45,281 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 46 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:04:45,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 44 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:04:45,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-02-15 13:04:45,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 126. [2022-02-15 13:04:45,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 2.464) internal successors, (308), 125 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:45,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 308 transitions. [2022-02-15 13:04:45,285 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 308 transitions. Word has length 17 [2022-02-15 13:04:45,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:04:45,285 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 308 transitions. [2022-02-15 13:04:45,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:45,286 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 308 transitions. [2022-02-15 13:04:45,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-15 13:04:45,286 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:04:45,286 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:04:45,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-02-15 13:04:45,286 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-15 13:04:45,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:04:45,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1348645298, now seen corresponding path program 20 times [2022-02-15 13:04:45,287 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:04:45,287 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500169325] [2022-02-15 13:04:45,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:04:45,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:04:45,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:04:45,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:45,359 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:04:45,359 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500169325] [2022-02-15 13:04:45,359 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500169325] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:04:45,359 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:04:45,359 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 13:04:45,359 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693464127] [2022-02-15 13:04:45,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:04:45,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 13:04:45,359 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:04:45,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 13:04:45,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-15 13:04:45,360 INFO L87 Difference]: Start difference. First operand 126 states and 308 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:45,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:04:45,428 INFO L93 Difference]: Finished difference Result 203 states and 474 transitions. [2022-02-15 13:04:45,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 13:04:45,428 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-15 13:04:45,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:04:45,429 INFO L225 Difference]: With dead ends: 203 [2022-02-15 13:04:45,429 INFO L226 Difference]: Without dead ends: 143 [2022-02-15 13:04:45,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-15 13:04:45,430 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 42 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:04:45,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 39 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:04:45,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-02-15 13:04:45,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 111. [2022-02-15 13:04:45,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 2.4545454545454546) internal successors, (270), 110 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:45,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 270 transitions. [2022-02-15 13:04:45,435 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 270 transitions. Word has length 17 [2022-02-15 13:04:45,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:04:45,435 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 270 transitions. [2022-02-15 13:04:45,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:45,435 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 270 transitions. [2022-02-15 13:04:45,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-15 13:04:45,435 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:04:45,435 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:04:45,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-02-15 13:04:45,436 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-15 13:04:45,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:04:45,436 INFO L85 PathProgramCache]: Analyzing trace with hash -366308814, now seen corresponding path program 21 times [2022-02-15 13:04:45,436 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:04:45,436 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484166722] [2022-02-15 13:04:45,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:04:45,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:04:45,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:04:45,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:45,513 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:04:45,513 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484166722] [2022-02-15 13:04:45,513 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484166722] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:04:45,513 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:04:45,513 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 13:04:45,513 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897925427] [2022-02-15 13:04:45,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:04:45,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 13:04:45,514 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:04:45,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 13:04:45,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-15 13:04:45,514 INFO L87 Difference]: Start difference. First operand 111 states and 270 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:45,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:04:45,571 INFO L93 Difference]: Finished difference Result 174 states and 399 transitions. [2022-02-15 13:04:45,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 13:04:45,571 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-15 13:04:45,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:04:45,572 INFO L225 Difference]: With dead ends: 174 [2022-02-15 13:04:45,572 INFO L226 Difference]: Without dead ends: 120 [2022-02-15 13:04:45,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-15 13:04:45,573 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 42 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:04:45,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 37 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:04:45,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-02-15 13:04:45,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 88. [2022-02-15 13:04:45,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.310344827586207) internal successors, (201), 87 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:45,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 201 transitions. [2022-02-15 13:04:45,576 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 201 transitions. Word has length 17 [2022-02-15 13:04:45,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:04:45,577 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 201 transitions. [2022-02-15 13:04:45,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:45,577 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 201 transitions. [2022-02-15 13:04:45,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-15 13:04:45,577 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:04:45,577 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:04:45,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-02-15 13:04:45,577 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-15 13:04:45,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:04:45,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1857803726, now seen corresponding path program 22 times [2022-02-15 13:04:45,578 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:04:45,578 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411558764] [2022-02-15 13:04:45,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:04:45,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:04:45,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:04:45,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:45,656 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:04:45,656 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411558764] [2022-02-15 13:04:45,656 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411558764] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:04:45,656 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:04:45,656 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 13:04:45,656 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700185832] [2022-02-15 13:04:45,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:04:45,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 13:04:45,657 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:04:45,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 13:04:45,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-15 13:04:45,657 INFO L87 Difference]: Start difference. First operand 88 states and 201 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:45,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:04:45,723 INFO L93 Difference]: Finished difference Result 131 states and 297 transitions. [2022-02-15 13:04:45,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 13:04:45,724 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-15 13:04:45,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:04:45,724 INFO L225 Difference]: With dead ends: 131 [2022-02-15 13:04:45,724 INFO L226 Difference]: Without dead ends: 78 [2022-02-15 13:04:45,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-15 13:04:45,725 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 39 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:04:45,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 37 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:04:45,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-02-15 13:04:45,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-02-15 13:04:45,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 2.272727272727273) internal successors, (175), 77 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:45,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 175 transitions. [2022-02-15 13:04:45,727 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 175 transitions. Word has length 17 [2022-02-15 13:04:45,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:04:45,728 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 175 transitions. [2022-02-15 13:04:45,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:45,728 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 175 transitions. [2022-02-15 13:04:45,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-15 13:04:45,728 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:04:45,728 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:04:45,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-02-15 13:04:45,728 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-15 13:04:45,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:04:45,729 INFO L85 PathProgramCache]: Analyzing trace with hash -43499248, now seen corresponding path program 23 times [2022-02-15 13:04:45,729 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:04:45,729 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962556947] [2022-02-15 13:04:45,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:04:45,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:04:45,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:04:45,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:45,795 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:04:45,795 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962556947] [2022-02-15 13:04:45,795 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962556947] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:04:45,795 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:04:45,796 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 13:04:45,796 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430641552] [2022-02-15 13:04:45,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:04:45,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 13:04:45,796 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:04:45,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 13:04:45,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-15 13:04:45,797 INFO L87 Difference]: Start difference. First operand 78 states and 175 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:45,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:04:45,845 INFO L93 Difference]: Finished difference Result 109 states and 239 transitions. [2022-02-15 13:04:45,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 13:04:45,846 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-15 13:04:45,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:04:45,846 INFO L225 Difference]: With dead ends: 109 [2022-02-15 13:04:45,846 INFO L226 Difference]: Without dead ends: 64 [2022-02-15 13:04:45,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-15 13:04:45,848 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 32 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:04:45,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 29 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:04:45,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-02-15 13:04:45,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-02-15 13:04:45,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 2.0952380952380953) internal successors, (132), 63 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:45,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 132 transitions. [2022-02-15 13:04:45,852 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 132 transitions. Word has length 17 [2022-02-15 13:04:45,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:04:45,852 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 132 transitions. [2022-02-15 13:04:45,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:45,852 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 132 transitions. [2022-02-15 13:04:45,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-15 13:04:45,852 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:04:45,852 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:04:45,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-02-15 13:04:45,853 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-15 13:04:45,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:04:45,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1633433998, now seen corresponding path program 24 times [2022-02-15 13:04:45,853 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:04:45,853 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508942364] [2022-02-15 13:04:45,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:04:45,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:04:45,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:04:45,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:04:45,930 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:04:45,930 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508942364] [2022-02-15 13:04:45,930 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508942364] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:04:45,930 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:04:45,930 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-15 13:04:45,930 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661665684] [2022-02-15 13:04:45,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:04:45,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 13:04:45,930 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:04:45,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 13:04:45,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-02-15 13:04:45,931 INFO L87 Difference]: Start difference. First operand 64 states and 132 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:45,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:04:45,979 INFO L93 Difference]: Finished difference Result 63 states and 131 transitions. [2022-02-15 13:04:45,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-15 13:04:45,980 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-02-15 13:04:45,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:04:45,980 INFO L225 Difference]: With dead ends: 63 [2022-02-15 13:04:45,980 INFO L226 Difference]: Without dead ends: 0 [2022-02-15 13:04:45,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-15 13:04:45,981 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 27 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:04:45,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 24 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:04:45,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-15 13:04:45,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-15 13:04:45,982 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) [2022-02-15 13:04:45,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-15 13:04:45,982 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2022-02-15 13:04:45,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:04:45,982 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-15 13:04:45,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:04:45,982 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-15 13:04:45,983 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-15 13:04:45,985 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (4 of 5 remaining) [2022-02-15 13:04:45,986 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 5 remaining) [2022-02-15 13:04:45,986 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 5 remaining) [2022-02-15 13:04:45,986 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (1 of 5 remaining) [2022-02-15 13:04:45,987 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION (0 of 5 remaining) [2022-02-15 13:04:45,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-02-15 13:04:45,990 INFO L732 BasicCegarLoop]: Path program histogram: [24, 1, 1, 1] [2022-02-15 13:04:45,991 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-15 13:04:45,991 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-15 13:04:45,994 INFO L202 PluginConnector]: Adding new model example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 01:04:45 BasicIcfg [2022-02-15 13:04:45,994 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-15 13:04:45,994 INFO L158 Benchmark]: Toolchain (without parser) took 5421.19ms. Allocated memory was 177.2MB in the beginning and 245.4MB in the end (delta: 68.2MB). Free memory was 134.7MB in the beginning and 86.2MB in the end (delta: 48.5MB). Peak memory consumption was 117.5MB. Max. memory is 8.0GB. [2022-02-15 13:04:45,994 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.11ms. Allocated memory is still 177.2MB. Free memory was 135.7MB in the beginning and 135.6MB in the end (delta: 55.2kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-15 13:04:45,995 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.47ms. Allocated memory is still 177.2MB. Free memory was 134.6MB in the beginning and 133.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-15 13:04:45,995 INFO L158 Benchmark]: Boogie Preprocessor took 11.58ms. Allocated memory is still 177.2MB. Free memory was 133.1MB in the beginning and 132.2MB in the end (delta: 892.3kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-15 13:04:45,995 INFO L158 Benchmark]: RCFGBuilder took 168.79ms. Allocated memory is still 177.2MB. Free memory was 132.1MB in the beginning and 124.1MB in the end (delta: 8.1MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-02-15 13:04:45,997 INFO L158 Benchmark]: TraceAbstraction took 5208.25ms. Allocated memory was 177.2MB in the beginning and 245.4MB in the end (delta: 68.2MB). Free memory was 123.6MB in the beginning and 86.2MB in the end (delta: 37.4MB). Peak memory consumption was 105.9MB. Max. memory is 8.0GB. [2022-02-15 13:04:46,002 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 0.11ms. Allocated memory is still 177.2MB. Free memory was 135.7MB in the beginning and 135.6MB in the end (delta: 55.2kB). There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.47ms. Allocated memory is still 177.2MB. Free memory was 134.6MB in the beginning and 133.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 11.58ms. Allocated memory is still 177.2MB. Free memory was 133.1MB in the beginning and 132.2MB in the end (delta: 892.3kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 168.79ms. Allocated memory is still 177.2MB. Free memory was 132.1MB in the beginning and 124.1MB in the end (delta: 8.1MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * TraceAbstraction took 5208.25ms. Allocated memory was 177.2MB in the beginning and 245.4MB in the end (delta: 68.2MB). Free memory was 123.6MB in the beginning and 86.2MB in the end (delta: 37.4MB). Peak memory consumption was 105.9MB. 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: 21]: 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 9 procedures, 40 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 5.1s, OverallIterations: 27, TraceHistogramMax: 1, PathProgramHistogramMax: 24, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1079 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1079 mSDsluCounter, 1325 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1573 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1621 IncrementalHoareTripleChecker+Invalid, 1624 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 584 mSDtfsCounter, 1621 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 153 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=297occurred in iteration=0, InterpolantAutomatonStates: 153, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 27 MinimizatonAttempts, 1410 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 459 NumberOfCodeBlocks, 459 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 432 ConstructedInterpolants, 0 QuantifiedInterpolants, 6158 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 27 InterpolantComputations, 27 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! [2022-02-15 13:04:46,037 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...